Spring学习

<dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.7</version>
        </dependency>

2023-06-09；

1.JMS Java message serice

2023-06-11；

<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>

package com.kuang.user.dao;

public interface UserDao {

    public String getUser();
}

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;

public class UserDaoImpl implements UserDao {

    public String getUser() {
        return "默认查询用户数据";
    }
}

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;

public class UserDaoMysqlImpl implements UserDao {
    @Override
    public String getUser() {
        return "MySQL获取用户数据";
    }
}

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;

public class UserDaoOracleImpl implements UserDao {
    @Override
    public String getUser() {
        return "Oracle获取用户数据";
    }
}

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;

public class UserDaoSqlserverImpl implements UserDao {
    @Override
    public String getUser() {
        return "SqlServer查用户数据";
    }
}

package com.kuang.user.service;

import com.kuang.user.dao.UserDao;

public interface UserService {

    public String getUser();

    public UserDao getUserDao();

    public void setUserDao(UserDao userDao);
}

package com.kuang.user.service.impl;

import com.kuang.user.dao.UserDao;
import com.kuang.user.dao.impl.UserDaoImpl;
import com.kuang.user.dao.impl.UserDaoMysqlImpl;
import com.kuang.user.dao.impl.UserDaoOracleImpl;
import com.kuang.user.service.UserService;

public class UserServiceImpl implements UserService {

//    private UserDao userDao = new UserDaoImpl();
//    private UserDao userDao = new UserDaoMysqlImpl();
//    private UserDao userDao = new UserDaoOracleImpl();

    private UserDao userDao;

    @Override
    public UserDao getUserDao() {
        return userDao;
    }

    @Override
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    @Override
    public String getUser() {
        return userDao.getUser();
    }
}

10.

import com.kuang.user.dao.impl.UserDaoImpl;
import com.kuang.user.dao.impl.UserDaoMysqlImpl;
import com.kuang.user.dao.impl.UserDaoOracleImpl;
import com.kuang.user.dao.impl.UserDaoSqlserverImpl;
import com.kuang.user.service.UserService;
import com.kuang.user.service.impl.UserServiceImpl;

public class MyTest {

    public static void main(String[] args) {
//        UserService userService = new UserServiceImpl();
        UserService userService = new UserServiceImpl();
//        userService.setUserDao(new UserDaoMysqlImpl());
//        userService.setUserDao(new UserDaoImpl());
        userService.setUserDao(new UserDaoSqlserverImpl());
        System.out.println(userService.getUser());
    }
}

2023-06-13；

package com.kuang.pojo;public class Hello {

    private String str;

    public String getStr() {
        return str;
    }

    public void setStr(String str) {
        this.str = str;
    }

    @Override
    public String toString() {
        return "Hello{" +
                "str='" + str + '\'' +
                '}';
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="hello" class="com.kuang.pojo.Hello">
        <property name="str" value="Spring"/>
    </bean>

</beans>

import com.kuang.pojo.Hello;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Hello hello = (Hello) context.getBean("hello");
        System.out.println(hello.toString());
    }
}

20230614；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="userDaoImpl" class="com.kuang.user.dao.impl.UserDaoImpl"/>
    <bean id="mysqlImpl" class="com.kuang.user.dao.impl.UserDaoMysqlImpl"/>
    <bean id="oracleImpl" class="com.kuang.user.dao.impl.UserDaoOracleImpl"/>
    <bean id="sqlServerImpl" class="com.kuang.user.dao.impl.UserDaoSqlserverImpl"/>

    <bean id="userServiceImpl" class="com.kuang.user.service.impl.UserServiceImpl">
<!--        <property name="userDao" ref="userDaoImpl"/>-->
<!--        <property name="userDao" ref="mysqlImpl"/>-->
<!--        <property name="userDao" ref="oracleImpl"/>-->
        <property name="userDao" ref="sqlServerImpl"/>
    </bean>

</beans>

import com.kuang.user.dao.impl.UserDaoImpl;
import com.kuang.user.dao.impl.UserDaoMysqlImpl;
import com.kuang.user.dao.impl.UserDaoOracleImpl;
import com.kuang.user.dao.impl.UserDaoSqlserverImpl;
import com.kuang.user.service.UserService;
import com.kuang.user.service.impl.UserServiceImpl;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

    public static void main(String[] args) {
//        UserService userService = new UserServiceImpl();
//        UserService userService = new UserServiceImpl();
//        userService.setUserDao(new UserDaoMysqlImpl());
//        userService.setUserDao(new UserDaoImpl());
//        userService.setUserDao(new UserDaoSqlserverImpl());
//        System.out.println(userService.getUser());

        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        UserServiceImpl userServiceImpl = (UserServiceImpl) context.getBean("userServiceImpl");
        System.out.println(userServiceImpl.getUser());
    }
}

3.IOC inversion of controll

package com.kuang.pojo;

public class User {

    private String name;

    public User(String name) {
        this.name = name;
    }

    /*public User() {
        System.out.println("User默认无参构造！");
    }*/

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void show() {
        System.out.println("name=" + name);
    }
}

package com.kuang.pojo;

public class Dog {
    private String name;

    public Dog() {
        System.out.println("Dog被创建!");
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

<!--    <bean id="user" class="com.kuang.pojo.User">-->
<!--        <property name="name" value="秦疆"/>-->
<!--    </bean>-->

    <!-- 通过下标 -->
<!--        <bean id="user" class="com.kuang.pojo.User">-->
<!--            <constructor-arg index="0" value="狂神说Java"/>-->
<!--        </bean>-->

    <!-- 通过类型 -->
<!--        <bean id="user" class="com.kuang.pojo.User">-->
<!--            <constructor-arg type="java.lang.String" value="qinjiang"/>-->
<!--        </bean>-->

    <!-- 通过属性名 -->
    <bean id="user" class="com.kuang.pojo.User">
        <constructor-arg name="name" value="秦疆"/>
    </bean>

    <bean id="dog" class="com.kuang.pojo.Dog">

    </bean>

</beans>

import com.kuang.pojo.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

    public static void main(String[] args) {

        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        User user = (User) context.getBean("user");
        User user2 = (User) context.getBean("user");
        System.out.println("user和user2引用同一对象：" + (user == user2));
//        user.show();
    }
}

20230615；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

<!--    <bean id="user" class="com.kuang.pojo.User">-->
<!--        <property name="name" value="秦疆"/>-->
<!--    </bean>-->

    <!-- 通过下标 -->
<!--        <bean id="user" class="com.kuang.pojo.User">-->
<!--            <constructor-arg index="0" value="狂神说Java"/>-->
<!--        </bean>-->

    <!-- 通过类型 -->
        <!--<bean id="user" class="com.kuang.pojo.User">
            <constructor-arg type="java.lang.String" value="qinjiang"/>
        </bean>-->

    <!-- 通过属性名 -->
    <bean id="user" class="com.kuang.pojo.User">
        <constructor-arg name="name" value="秦疆"/>
    </bean>

    <!--<bean id="dog" class="com.kuang.pojo.Dog">

    </bean>-->

    <alias name="user" alias="anotherNameOfUser"/>

    <bean id="dog" class="com.kuang.pojo.Dog" name="thirdNameOfDog, d1 d2;d3">
        <property name="name" value="中华田园犬"/>
    </bean>

</beans>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="beans.xml"/>
    <import resource="beans2.xml"/>
    <import resource="beans3.xml"/>

</beans>

import com.kuang.pojo.Dog;
import com.kuang.pojo.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

    public static void main(String[] args) {

//        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
//        User user = (User) context.getBean("user");
//        User user = (User) context.getBean("anotherNameOfUser");
//        Dog dog = (Dog) context.getBean("thirdNameOfDog");
        Dog dog = (Dog) context.getBean("d4");
//        User user2 = (User) context.getBean("user");
//        System.out.println("user和user2引用同一对象：" + (user == user2));
        dog.show();
    }
}

4.DI dependency injection

package com.kuang.pojo;

public class Address {
    private String address;

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "Address{" +
                "address='" + address + '\'' +
                '}';
    }
}

package com.kuang.pojo;

import java.util.*;

public class Student {
    private String name;
    private Address address;
    private String[] books;
    private List<String> hobbies;
    private Map<String, String> card;
    private Set<String> games;
    private String wife;
    private Properties info;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

    public String[] getBooks() {
        return books;
    }

    public void setBooks(String[] books) {
        this.books = books;
    }

    public List<String> getHobbies() {
        return hobbies;
    }

    public void setHobbies(List<String> hobbies) {
        this.hobbies = hobbies;
    }

    public Map<String, String> getCard() {
        return card;
    }

    public void setCard(Map<String, String> card) {
        this.card = card;
    }

    public Set<String> getGames() {
        return games;
    }

    public void setGames(Set<String> games) {
        this.games = games;
    }

    public String getWife() {
        return wife;
    }

    public void setWife(String wife) {
        this.wife = wife;
    }

    public Properties getInfo() {
        return info;
    }

    public void setInfo(Properties info) {
        this.info = info;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", address=" + address +
                ", books=" + Arrays.toString(books) +
                ", hobbies=" + hobbies +
                ", card=" + card +
                ", games=" + games +
                ", wife='" + wife + '\'' +
                ", info=" + info +
                '}';
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="address" class="com.kuang.pojo.Address">
        <property name="address" value="烟台"/>
    </bean>

    <bean id="student" class="com.kuang.pojo.Student">
        <property name="name" value="秦疆"/>
        <property name="address" ref="address"/>
        <property name="books">
            <array>
                <value>红楼梦</value>
                <value>三国演义</value>
                <value>水浒传</value>
                <value>西游记</value>
            </array>
        </property>
        <property name="hobbies">
            <list>
                <value>跑步</value>
                <value>看搞笑视频</value>
                <value>哑铃</value>
            </list>
        </property>
        <property name="card">
            <map>
                <entry key="身份证" value="370612111122331234"/>
                <entry key="银行卡" value="1234123412341234"/>
            </map>
        </property>
        <property name="games">
            <set>
                <value>LOL</value>
                <value>CS</value>
                <value>CF</value>
            </set>
        </property>
        <property name="wife">
            <null></null>
        </property>
        <property name="info">
            <props>
                <prop key="driver">mysql</prop>
                <prop key="url">192.168.100.11</prop>
                <prop key="username">test</prop>
                <prop key="password">123456</prop>
            </props>
        </property>
    </bean>

</beans>

import com.kuang.pojo.Student;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Student student = (Student) context.getBean("student");
        System.out.println(student.getName());
//        System.out.println(student.getAddress());
        System.out.println(student.toString());
    }
}

20230616；

package com.kuang.pojo;

public class User {
    private String name;
    private String age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", age='" + age + '\'' +
                '}';
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="user" class="com.kuang.pojo.User" p:name="张三" p:age="28"></bean>

</beans>

<dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

package com.kuang.pojo;

public class Dog {
    private String name;
    private String age;

    public Dog() {

    }

    public Dog(String name, String age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Dog{" +
                "name='" + name + '\'' +
                ", age='" + age + '\'' +
                '}';
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:c="http://www.springframework.org/schema/c"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--<bean id="dog" class="com.kuang.pojo.Dog" p:name="小黑" p:age="2"></bean>-->

    <bean id="dog2" class="com.kuang.pojo.Dog" c:name="小黄" c:age="3"></bean>

</beans>

import com.kuang.pojo.Dog;
import com.kuang.pojo.Student;
import com.kuang.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Student student = (Student) context.getBean("student");
        System.out.println(student.getName());
//        System.out.println(student.getAddress());
        System.out.println(student.toString());
    }

    @Test
    public void test() {
        ApplicationContext context = new ClassPathXmlApplicationContext("userBeans.xml");
        User user = context.getBean("user", User.class);
        System.out.println(user.toString());
    }

    @Test
    public void dogTest() {
        ApplicationContext context = new ClassPathXmlApplicationContext("dogBeans.xml");
        Dog dog = context.getBean("dog2", Dog.class);
        System.out.println(dog.toString());
    }
}

7.prototype [ˈproʊtəˌtaɪp]

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:c="http://www.springframework.org/schema/c"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--<bean id="dog" class="com.kuang.pojo.Dog" p:name="小黑" p:age="2"></bean>-->

<!--    <bean id="dog2" class="com.kuang.pojo.Dog" c:name="小黄" c:age="3" scope="singleton"></bean>-->

    <bean id="dog2" class="com.kuang.pojo.Dog" c:name="小黄" c:age="3" scope="prototype"></bean>

</beans>

import com.kuang.pojo.Dog;
import com.kuang.pojo.Student;
import com.kuang.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Student student = (Student) context.getBean("student");
        System.out.println(student.getName());
//        System.out.println(student.getAddress());
        System.out.println(student.toString());
    }

    @Test
    public void test() {
        ApplicationContext context = new ClassPathXmlApplicationContext("userBeans.xml");
        User user = context.getBean("user", User.class);
        System.out.println(user.toString());
    }

    @Test
    public void dogTest() {
        ApplicationContext context = new ClassPathXmlApplicationContext("dogBeans.xml");
        Dog dog = context.getBean("dog2", Dog.class);
        System.out.println(dog.toString());
    }

    @Test
    public void singletonTest() {
        ApplicationContext context = new ClassPathXmlApplicationContext("dogBeans.xml");
        Dog dog = context.getBean("dog2", Dog.class);
        Dog dog2 = context.getBean("dog2", Dog.class);
        System.out.println(dog.hashCode());
        System.out.println(dog2.hashCode());
        System.out.println("scope为singleton时，dog==dog2吗？" + (dog == dog2));
    }

    @Test
    public void prototypeTest() {
        ApplicationContext context = new ClassPathXmlApplicationContext("dogBeans.xml");
        Dog dog = context.getBean("dog2", Dog.class);
        Dog dog2 = context.getBean("dog2", Dog.class);
        System.out.println(dog.hashCode());
        System.out.println(dog2.hashCode());
        System.out.println("scope为prototype时，dog==dog2吗？" + (dog == dog2));
    }
}

10.

package com.kuang.pojo;

public class Cat {
    public void shout() {
        System.out.println("miao");
    }
}

11.

package com.kuang.pojo;

public class Dog {
    public void shout() {
        System.out.println("wang");
    }
}

12.

package com.kuang.pojo;

public class Person {
    private Cat cat;
    private Dog dog;
    private String name;

    public Cat getCat() {
        return cat;
    }

    public void setCat(Cat cat) {
        this.cat = cat;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Person{" +
                "cat=" + cat +
                ", dog=" + dog +
                ", name='" + name + '\'' +
                '}';
    }
}

13.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="cat" class="com.kuang.pojo.Cat"/>
<!--    <bean id="dog" class="com.kuang.pojo.Dog"/>-->
    <bean id="dog2" class="com.kuang.pojo.Dog"/>

    <!--<bean class="com.kuang.pojo.Cat"/>
    <bean class="com.kuang.pojo.Dog"/>-->

    <!--<bean id="person" class="com.kuang.pojo.Person">
        <property name="cat" ref="cat"/>
        <property name="dog" ref="dog"/>
        <property name="name" value="小明"/>
    </bean>-->

    <!--<bean id="person" class="com.kuang.pojo.Person" autowire="byName">
        <property name="name" value="小明"/>
    </bean>-->

    <bean id="person" class="com.kuang.pojo.Person" autowire="byType">
        <property name="name" value="小米"/>
    </bean>

</beans>

14.

import com.kuang.pojo.Person;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public void test1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testAutowiredByName() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testAutowiredByType() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }
}

20230617；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config/>

<!--    <bean id="cat" class="com.kuang.pojo.Cat"/>-->
<!--    <bean id="dog" class="com.kuang.pojo.Dog"/>-->
    <bean id="dog2" class="com.kuang.pojo.Dog"/>
    <bean id="dog" class="com.kuang.pojo.Dog"/>
<!--    <bean id="dog" class="com.kuang.pojo.Dog"/>-->
    <bean id="person" class="com.kuang.pojo.Person"/>

    <!--<bean class="com.kuang.pojo.Cat"/>
    <bean class="com.kuang.pojo.Dog"/>-->

    <!--<bean id="person" class="com.kuang.pojo.Person">
        <property name="cat" ref="cat"/>
        <property name="dog" ref="dog"/>
        <property name="name" value="小明"/>
    </bean>-->

    <!--<bean id="person" class="com.kuang.pojo.Person" autowire="byName">
        <property name="name" value="小明"/>
    </bean>-->

    <!--<bean id="person" class="com.kuang.pojo.Person" autowire="byType">
        <property name="name" value="小米"/>
    </bean>-->

</beans>

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.lang.Nullable;

public class Person {
    @Autowired(required = false)
    private Cat cat;
    @Autowired
    private Dog dog;
    private String name;

    /*public Person(@Nullable String name) {
        this.name = name;
    }*/

    public Cat getCat() {
        return cat;
    }

    public void setCat(Cat cat) {
        this.cat = cat;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Person{" +
                "cat=" + cat +
                ", dog=" + dog +
                ", name='" + name + '\'' +
                '}';
    }
}

import com.kuang.pojo.Person;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public void test1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testAutowiredByName() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testAutowiredByType() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testContextAnnotation1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
//        person.getCat().shout();
        person.getDog().shout();
    }
}

20230618；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config/>
    <bean id="cat" class="com.kuang.pojo.Cat"/>
    <bean id="dog2" class="com.kuang.pojo.Dog"/>
    <bean id="dog3" class="com.kuang.pojo.Dog"/>
    <bean id="person" class="com.kuang.pojo.Person"/>
</beans>

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.lang.Nullable;

public class Person {
    @Autowired(required = false)
    private Cat cat;
    @Autowired
    @Qualifier(value = "dog2")
    private Dog dog;
    private String name;

    /*public Person(@Nullable String name) {
        this.name = name;
    }*/

    public Cat getCat() {
        return cat;
    }

    public void setCat(Cat cat) {
        this.cat = cat;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Person{" +
                "cat=" + cat +
                ", dog=" + dog +
                ", name='" + name + '\'' +
                '}';
    }
}

import com.kuang.pojo.Person;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public void testContextAnnotation1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }
}

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

@Component
//@Scope(value = "singleton")
@Scope(value = "prototype")
public class Pig {
//    @Value(value = "佩奇")
    private String name;

    public String getName() {
        return name;
    }

//    @Value(value = "小猪佩奇")
    @Value("小猪佩奇佩奇")
    public void setName(String name) {
        this.name = name;
    }
}

package com.kuang.dao;

public interface PigDao {
    public void shout();
}

package com.kuang.dao.impl;

import com.kuang.dao.PigDao;
import org.springframework.stereotype.Repository;

@Repository
public class PigDaoImpl implements PigDao {
    @Override
    public void shout() {
        System.out.println("哄哄");
    }
}

package com.kuang.service;

public interface PigService {
    public void shout();
}

package com.kuang.service.impl;

import com.kuang.dao.PigDao;
import com.kuang.dao.impl.PigDaoImpl;
import com.kuang.service.PigService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class PigServiceImpl implements PigService {
    @Autowired
    PigDao pigDaoImpl;

    @Override
    public void shout() {
        pigDaoImpl.shout();
    }
}

package com.kuang.controller;

import com.kuang.service.PigService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

@Controller
public class PigController {
    @Autowired
    private PigService pigService;

    public void shout() {
        pigService.shout();
    }
}

10.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

<!--    <context:component-scan base-package="com.kuang.pojo"/>-->
    <context:component-scan base-package="com.kuang"/>
    <context:annotation-config/>

</beans>

11.

import com.kuang.controller.PigController;
import com.kuang.pojo.Pig;
import com.kuang.service.impl.PigServiceImpl;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public void testSpringAnnotation() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        Pig pig = context.getBean("pig", Pig.class);
        System.out.println(pig.getName());

        PigController pigController = context.getBean("pigController", PigController.class);
        pigController.shout();

        Pig pig1 = context.getBean("pig", Pig.class);
        System.out.println("pig==pig1吗" + (pig == pig1));
    }
}

12.Repository

13.Qualifier

14.

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;
import org.springframework.stereotype.Repository;

@Repository
public class UserDaoImpl implements UserDao {
    @Override
    public String getUser() {
        return "默认查询用户数据";
    }
}

15.

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;
import org.springframework.stereotype.Repository;

@Repository
public class UserDaoMysqlImpl implements UserDao {
    @Override
    public String getUser() {
        return "MySQL获取用户数据";
    }
}

16.

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;
import org.springframework.stereotype.Repository;

@Repository
public class UserDaoOracleImpl implements UserDao {
    @Override
    public String getUser() {
        return "Oracle获取用户数据";
    }
}

17.

package com.kuang.user.dao.impl;

import com.kuang.user.dao.UserDao;
import org.springframework.stereotype.Repository;

@Repository
public class UserDaoSqlserverImpl implements UserDao {
    @Override
    public String getUser() {
        return "SqlServer查用户数据";
    }
}

18.

package com.kuang.user.service.impl;

import com.kuang.user.dao.UserDao;
import com.kuang.user.dao.impl.UserDaoImpl;
import com.kuang.user.dao.impl.UserDaoMysqlImpl;
import com.kuang.user.dao.impl.UserDaoOracleImpl;
import com.kuang.user.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

@Service
public class UserServiceImpl implements UserService {//    private UserDao userDao;
//    @Qualifier("userDaoMysqlImpl")
    @Qualifier("userDaoImpl")
    @Autowired
    UserDao userDao;

    @Override
    public UserDao getUserDao() {
        return userDao;
    }

    @Override
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    @Override
    public String getUser() {
        return userDao.getUser();
    }
}

19.

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.kuang.user"/>
    <context:annotation-config/>

</beans>

20.

import com.kuang.user.dao.impl.UserDaoImpl;
import com.kuang.user.dao.impl.UserDaoMysqlImpl;
import com.kuang.user.dao.impl.UserDaoOracleImpl;
import com.kuang.user.dao.impl.UserDaoSqlserverImpl;
import com.kuang.user.service.UserService;
import com.kuang.user.service.impl.UserServiceImpl;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserServiceImpl userServiceImpl = (UserServiceImpl) context.getBean("userServiceImpl");
        System.out.println(userServiceImpl.getUser());
    }
}

21.

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class Hello {
    @Value("小明")
    private String str;

    public String getStr() {
        return str;
    }

    public void setStr(String str) {
        this.str = str;
    }

    @Override
    public String toString() {
        return "Hello{" +
                "str='" + str + '\'' +
                '}';
    }
}

22.

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">
    <context:annotation-config/>
    <context:component-scan base-package="com.kuang.pojo"/>

</beans>

23.

import com.kuang.pojo.Hello;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

    public static void main(String[] args) {
//        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        Hello hello = (Hello) context.getBean("hello");
        System.out.println(hello.toString());
    }
}

24.

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class Dog {
    private String name;

    public Dog() {
        System.out.println("Dog被创建!");
    }

    public String getName() {
        return name;
    }

    @Value("大黄")
    public void setName(String name) {
        this.name = name;
    }

    public void show() {
        System.out.println("name=" + name);
    }
}

25.

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;

@Component
public class User {
    @Value("张三")
    private String name;

    public User(@Nullable String name) {
        this.name = name;
    }

    /*public User() {
        System.out.println("User默认无参构造！");
    }*/

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void show() {
        System.out.println("name=" + name);
    }
}

26.

import com.kuang.pojo.Dog;
import com.kuang.pojo.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

    public static void main(String[] args) {

        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        Dog dog = context.getBean("dog", Dog.class);
        User user = context.getBean("user", User.class);
        user.show();
        dog.show();
    }
}

27.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config/>
    <context:component-scan base-package="com.kuang.pojo"/>

</beans>

20230619；

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class Address {
    @Value("烟台牟平4")
    private String address;

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "Address{" +
                "address='" + address + '\'' +
                '}';
    }
}

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class Dog {
    private String name;
    private String age;

    public Dog() {

    }

    public Dog(String name, String age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    @Value("大黄4")
    public void setName(String name) {
        this.name = name;
    }

    public String getAge() {
        return age;
    }

    @Value("4")
    public void setAge(String age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Dog{" +
                "name='" + name + '\'' +
                ", age='" + age + '\'' +
                '}';
    }
}

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.util.*;

@Component
public class Student {
    @Value("李四")
    private String name;
    @Autowired
    Address address;
    private String[] books;
    private List<String> hobbies;
    private Map<String, String> card;
    private Set<String> games;
    private String wife;
    private Properties info;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String[] getBooks() {
        return books;
    }

    public void setBooks(String[] books) {
        this.books = books;
    }

    public List<String> getHobbies() {
        return hobbies;
    }

    public void setHobbies(List<String> hobbies) {
        this.hobbies = hobbies;
    }

    public Map<String, String> getCard() {
        return card;
    }

    public void setCard(Map<String, String> card) {
        this.card = card;
    }

    public Set<String> getGames() {
        return games;
    }

    public void setGames(Set<String> games) {
        this.games = games;
    }

    public String getWife() {
        return wife;
    }

    public void setWife(String wife) {
        this.wife = wife;
    }

    public Properties getInfo() {
        return info;
    }

    public void setInfo(Properties info) {
        this.info = info;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", address=" + address +
                ", books=" + Arrays.toString(books) +
                ", hobbies=" + hobbies +
                ", card=" + card +
                ", games=" + games +
                ", wife='" + wife + '\'' +
                ", info=" + info +
                '}';
    }
}

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class User {
    @Value("王五")
    private String name;
    @Value("28")
    private String age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", age='" + age + '\'' +
                '}';
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config/>
    <context:component-scan base-package="com.kuang.pojo"/>

</beans>

import com.kuang.pojo.Address;
import com.kuang.pojo.Dog;
import com.kuang.pojo.Student;
import com.kuang.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public void springAnnotationTest() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        Address address = context.getBean("address", Address.class);
        System.out.println(address.toString());
        Dog dog = context.getBean("dog", Dog.class);
        System.out.println(dog.toString());
        Student student = context.getBean("student", Student.class);
        System.out.println(student.toString());
        User user = context.getBean("user", User.class);
        System.out.println(user.toString());
    }
}

package com.kuang.pojo;

import org.springframework.stereotype.Component;

@Component
public class Cat {
    public void shout() {
        System.out.println("miao");
    }
}

package com.kuang.pojo;

import org.springframework.stereotype.Component;

@Component
public class Dog {
    public void shout() {
        System.out.println("wang");
    }
}

import com.kuang.pojo.Person;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public void test1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testAutowiredByName() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testAutowiredByType() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testContextAnnotation1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Person person = context.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
    }

    @Test
    public void testSpringAnnotation2() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        Person person = context.getBean("person", Person.class);
        System.out.println(person.toString());
    }
}

10.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config/>
    <context:component-scan base-package="com.kuang.pojo"/>

</beans>

11.

import com.kuang.pojo.Person;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public void testSpringAnnotation2() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        Person person = context.getBean("person", Person.class);
        System.out.println(person.toString());
    }
}

12.

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class User {
    @Value("王五")
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                '}';
    }
}

13.

package com.kuang.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class User {
    @Value("王五")
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                '}';
    }
}

14.

package com.kuang.config;

import com.kuang.pojo.Dog;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration

@ComponentScan("com.kuang.pojo")

public class KuangConfig { @Bean public Dog getDog() { return new Dog(); } }

15.

package com.kuang.config;

import com.kuang.pojo.User;
import com.kuang.pojo.Dog;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;

@Configuration
@ComponentScan(basePackages = "com.kuang.pojo")
@Import(KuangConfig.class)
public class MyConfig {
    @Bean
    public User getUser() {
        return new User();
    }
}

16.

import com.kuang.pojo.Dog;
import com.kuang.config.MyConfig;
import com.kuang.pojo.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new AnnotationConfigApplicationContext(MyConfig.class);
        User user = context.getBean("getUser", User.class);
        System.out.println(user.toString());

        Dog dog = context.getBean("getDog", Dog.class);
        System.out.println(dog.toString());
    }
}

17.AOP aspect oriented programming

20230620；

package com.kuang.demo01;

public interface Rent {
    public void rent();
}

package com.kuang.demo01;

public class Landlord implements Rent {
    @Override
    public void rent() {
        System.out.println("房东要出租房子");
    }
}

package com.kuang.demo01;

public class Proxy implements Rent {
    private Landlord landlord;

    public Proxy() {

    }

    public Proxy(Landlord landlord) {
        this.landlord = landlord;
    }

    @Override
    public void rent() {
        showings();
        landlord.rent();
        signLeaseContract();
        collectIntermediaryFees();
    }

    public void showings() {
        System.out.println("中介带着看房");
    }

    public void signLeaseContract() {
        System.out.println("签租赁合同");
    }

    public void collectIntermediaryFees() {
        System.out.println("收中介费");
    }
}

package com.kuang.demo01;

public interface Rent {
    public void rent();
}

package com.kuang.demo02;

public interface UserService {
    public void add();
    public void delete();
    public void update();
    public void query();
}

package com.kuang.demo02;

public class UserServiceImpl implements UserService {
    @Override
    public void add() {
//        System.out.println("[Debug]调用了add方法");
        System.out.println("增加一个用户");
    }
    @Override
    public void delete() {
//        System.out.println("[Debug]调用了delete方法");
        System.out.println("删除一个用户");
    }
    @Override
    public void update() {
//        System.out.println("[Debug]调用了update方法");
        System.out.println("修改一个用户");
    }
    @Override
    public void query() {
//        System.out.println("[Debug]调用了query方法");
        System.out.println("查询一个用户");
    }
}

package com.kuang.demo02;

public class UserServiceProxy implements UserService {
    private UserServiceImpl userService;
    public void setUserService(UserServiceImpl userService) {
        this.userService = userService;
    }
//    public UserServiceProxy() {
//
//    }
//    public UserServiceProxy(UserServiceImpl userService) {
//        this.userService = userService;
//    }
    @Override
    public void add() {
        log("add");
        userService.add();
    }
    @Override
    public void delete() {
        log("delete");
        userService.delete();
    }
    @Override
    public void update() {
        log("update");
        userService.update();
    }
    @Override
    public void query() {
        log("query");
        userService.query();
    }
    public void log(String msg) {
        System.out.println("[Debug]（通过代理类横向编程）调用了" + msg + "方法");
    }
}

package com.kuang.demo02;

public class Client {
    public static void main(String[] args) {
//        UserServiceImpl userService = new UserServiceImpl();
//        userService.add();

//        UserServiceImpl userService = new UserServiceImpl();
//        UserServiceProxy userServiceProxy = new UserServiceProxy(userService);
//        userServiceProxy.add();

        UserServiceImpl userService = new UserServiceImpl();
        UserServiceProxy userServiceProxy = new UserServiceProxy();
        userServiceProxy.setUserService(userService);
        userServiceProxy.add();
    }
}

20230621；

1.invocation 调用；invoked 调用；

20230622；

package com.kuang.demo04;

public interface Rent {
    public void rent();
}

package com.kuang.demo04;

public class Landlord implements Rent {
    @Override
    public void rent() {
        System.out.println("房东出租房子");
    }
}

package com.kuang.demo04;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class ProxyInvocationHandlerSingleFunctionVersion implements InvocationHandler {
    private Rent rent;

    public void setRent(Rent rent) {
        this.rent = rent;
    }

    public Object getProxy() {
        return Proxy.newProxyInstance(this.getClass().getClassLoader(), rent.getClass().getInterfaces(), this);
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        showings();
        Object result = method.invoke(rent, args);
        collectIntermediaryFees();
        return result;
    }

    public void showings() {
        System.out.println("中介带着看房");
    }

    public void collectIntermediaryFees() {
        System.out.println("收中介费");
    }
}

package com.kuang.demo04;

public class ClientSingleFunctionVersion {
    public static void main(String[] args) {
        Landlord landlord = new Landlord();

        ProxyInvocationHandlerSingleFunctionVersion proxyInvocationHandlerSingleFunctionVersion = new ProxyInvocationHandlerSingleFunctionVersion();
        proxyInvocationHandlerSingleFunctionVersion.setRent(landlord);

        Rent proxy = (Rent) proxyInvocationHandlerSingleFunctionVersion.getProxy();
        proxy.rent();
    }
}

package com.kuang.demo04;

public interface UserService {
    public void add();
    public void delete();
}

package com.kuang.demo04;

public class UserServiceFirstEditionImpl implements UserService {
    @Override
    public void add() {
        System.out.println("增加了一个用户（第一版）");
    }

    @Override
    public void delete() {
        System.out.println("删除了一个用户（第一版）");
    }
}

package com.kuang.demo04;

public class UserServiceSecondEditionImpl implements UserService {
    @Override
    public void add() {
        System.out.println("增加了一个用户（第二版）");
    }

    @Override
    public void delete() {
        System.out.println("删除了一个用户（第二版）");
    }
}

package com.kuang.demo04;

public class UserServiceThirdEditionImpl implements UserService {
    @Override
    public void add() {
        System.out.println("增加了一个用户（第三版）");
    }

    @Override
    public void delete() {
        System.out.println("删除了一个用户（第三版）");
    }
}

10.

package com.kuang.demo04;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class ProxyInvocationHandler implements InvocationHandler {
    private Object target;

    public void setTarget(Object target) {
        this.target = target;
    }

    public Object getProxy() {
        return Proxy.newProxyInstance(this.getClass().getClassLoader(), target.getClass().getInterfaces(), this);
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        logBefore(method.getName());
        Object result = method.invoke(target, args);
        logAfter(method.getName());
        return result;
    }

    public void logBefore(String msg) {
        System.out.println("[Debug]" + msg + "方法执行前打印");
    }

    public void logAfter(String msg) {
        System.out.println("[Debug]" + msg + "方法执行后打印");
    }
}

11.

package com.kuang.demo04;

public class Client {
    public static void main(String[] args) {
//        UserServiceFirstEditionImpl userServiceFirstEdition = new UserServiceFirstEditionImpl();
//        UserServiceSecondEditionImpl userServiceSecondEdition = new UserServiceSecondEditionImpl();
        UserServiceThirdEditionImpl userServiceThirdEdition = new UserServiceThirdEditionImpl();

        ProxyInvocationHandler proxyInvocationHandler = new ProxyInvocationHandler();
//        proxyInvocationHandler.setTarget(userServiceFirstEdition);
//        proxyInvocationHandler.setTarget(userServiceSecondEdition);
        proxyInvocationHandler.setTarget(userServiceThirdEdition);

        UserService proxy = (UserService) proxyInvocationHandler.getProxy();
//        proxy.add();
        proxy.delete();
    }
}

20230623；

package com.kuang.aopTest;

public interface UserService {
    public void add();
    public void delete();
}

package com.kuang.aopTest;

public class UserServiceImpl implements UserService {
    @Override
    public void add() {
        System.out.println("增加一个用户");
    }
    @Override
    public void delete() {
        System.out.println("删除一个用户");
    }
}

package com.kuang.aopTest;

import org.springframework.aop.AfterReturningAdvice;

import java.lang.reflect.Method;

public class LogAfter implements AfterReturningAdvice {
    @Override
    public void afterReturning(Object returnValue, Method method, Object[] args, Object target) throws Throwable {
        System.out.println("[Debug]执行了" + target.getClass().getName() + "类的" + method.getName() + "方法，返回值是" + returnValue);
    }
}

package com.kuang.aopTest;

import org.springframework.aop.AfterReturningAdvice;

import java.lang.reflect.Method;

public class LogAfter implements AfterReturningAdvice {
    @Override
    public void afterReturning(Object returnValue, Method method, Object[] args, Object target) throws Throwable {
        System.out.println("[Debug]执行了" + target.getClass().getName() + "类的" + method.getName() + "方法，返回值是" + returnValue);
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="userServiceImpl" class="com.kuang.aopTest.UserServiceImpl"/>
    <bean id="logBefore" class="com.kuang.aopTest.LogBefore"/>
    <bean id="logAfter" class="com.kuang.aopTest.LogAfter"/>

    <aop:config>
<!--        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.add())"/>-->
<!--        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.delete())"/>-->
        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.*(..))"/>

        <aop:advisor pointcut-ref="pointcut" advice-ref="logBefore"/>
        <aop:advisor pointcut-ref="pointcut" advice-ref="logAfter"/>
    </aop:config>
</beans>

import com.kuang.aopTest.UserService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService userService = context.getBean("userServiceImpl", UserService.class);
        userService.add();
        userService.delete();
    }
}

package com.kuang.aopDiyTest;

public class DiyPoint {
    public void before() {
        System.out.println("[Debug]自定义切点 方法执行前执行");
    }

    public void after() {
        System.out.println("[Debug]自定义切点 方法执行后执行");
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="userServiceImpl" class="com.kuang.aopTest.UserServiceImpl"/>
<!--    <bean id="logBefore" class="com.kuang.aopTest.LogBefore"/>-->
<!--    <bean id="logAfter" class="com.kuang.aopTest.LogAfter"/>-->

<!--    <aop:config>-->
<!--&lt;!&ndash;        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.add())"/>&ndash;&gt;-->
<!--&lt;!&ndash;        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.delete())"/>&ndash;&gt;-->
<!--        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.*(..))"/>-->

<!--        <aop:advisor pointcut-ref="pointcut" advice-ref="logBefore"/>-->
<!--        <aop:advisor pointcut-ref="pointcut" advice-ref="logAfter"/>-->
<!--    </aop:config>-->

    <bean id="diyPoint" class="com.kuang.aopDiyTest.DiyPoint"/>

    <aop:config>
        <aop:aspect ref="diyPoint">
            <aop:pointcut id="point" expression="execution(* com.kuang.aopTest.UserServiceImpl.*(..))"/>

            <aop:before method="before" pointcut-ref="point"/>
            <aop:after method="after" pointcut-ref="point"/>
        </aop:aspect>
    </aop:config>
</beans>

9.signature [ˈsɪɡnətʃə(r)]

10.

package com.kuang.aopByAnnotation;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

@Aspect
public class AnnotationPointCut {
    @Before("execution(* com.kuang.aopTest.UserServiceImpl.*(..))")
    public void before() {
        System.out.println("[Debug]执行方法前执行@Before");
    }

    @After("execution(* com.kuang.aopTest.UserServiceImpl.*(..))")
    public void after() {
        System.out.println("[Debug]执行方法后执行@After");
    }

    @Around("execution(* com.kuang.aopTest.UserServiceImpl.*(..))")
    public void around(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        System.out.println("[Debug]环绕执行前@Around");
        proceedingJoinPoint.proceed();
        System.out.println("[Debug]环绕执行后@Around");
    }
}

11.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="userServiceImpl" class="com.kuang.aopTest.UserServiceImpl"/>
<!--    <bean id="logBefore" class="com.kuang.aopTest.LogBefore"/>-->
<!--    <bean id="logAfter" class="com.kuang.aopTest.LogAfter"/>-->

<!--    <aop:config>-->
<!--&lt;!&ndash;        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.add())"/>&ndash;&gt;-->
<!--&lt;!&ndash;        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.delete())"/>&ndash;&gt;-->
<!--        <aop:pointcut id="pointcut" expression="execution(* com.kuang.aopTest.UserServiceImpl.*(..))"/>-->

<!--        <aop:advisor pointcut-ref="pointcut" advice-ref="logBefore"/>-->
<!--        <aop:advisor pointcut-ref="pointcut" advice-ref="logAfter"/>-->
<!--    </aop:config>-->

<!--    <bean id="diyPoint" class="com.kuang.aopDiyTest.DiyPoint"/>-->

<!--    <aop:config>-->
<!--        <aop:aspect ref="diyPoint">-->
<!--            <aop:pointcut id="point" expression="execution(* com.kuang.aopTest.UserServiceImpl.*(..))"/>-->

<!--            <aop:before method="before" pointcut-ref="point"/>-->
<!--            <aop:after method="after" pointcut-ref="point"/>-->
<!--        </aop:aspect>-->
<!--    </aop:config>-->

    <bean id="annotationPointCut" class="com.kuang.aopByAnnotation.AnnotationPointCut"/>
    <aop:aspectj-autoproxy/>
</beans>

20230624；

1.lombok ['lɔmbɔk]

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-study</artifactId>
        <groupId>org.kuang</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>spring-10-mybatis</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.26</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>6.0.5</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.26</version>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>

</project>

driver = com.mysql.jdbc.Driver
url = jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC
username = root
password = root

package com.kuang.pojo;

import lombok.Data;

@Data
public class User {
    private int id;
    private String name;
    private String pwd;
}

package com.kuang.mapper;

import com.kuang.pojo.User;

import java.util.List;

public interface UserMapper {
    public List<User> selectUser();
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kuang.mapper.UserMapper">
<!--    <select id="selectUser" resultType="com.kuang.pojo.User">-->
<!--        select * from mybatis.user;-->
<!--    </select>-->
    <select id="selectUser" resultType="user">
        select * from mybatis.user;
    </select>
</mapper>

import com.kuang.mapper.UserMapper;
import com.kuang.pojo.User;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class MyTest {
    @Test
    public void testBasicMyBatis() throws IOException {
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        SqlSession sqlSession = sqlSessionFactory.openSession(true);
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        List<User> users = userMapper.selectUser();
        for (User user : users) {
            System.out.println(user);
        }
    }
}

20230625；

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <!--引入外部配置文件        -->
<!--    <properties resource="db.properties"/>-->

    <typeAliases>
        <typeAlias type="com.kuang.pojo.User" alias="user"/>
    </typeAliases>

    <!--<environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="${driver}"/>
                <property name="url" value="${url}"/>
                <property name="username" value="${username}"/>
                <property name="password" value="${password}"/>
            </dataSource>
        </environment>
    </environments>-->

    <!--<mappers>
        <mapper class="com.kuang.mapper.UserMapper"/>
    </mappers>-->

    <!--<settings>
        <setting name="" value=""/>
    </settings>-->
</configuration>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=utf-8&amp;useSSL=false&amp;serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="mapperLocations" value="classpath:com/kuang/mapper/*.xml"/>
    </bean>

    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>

</beans>

package com.kuang.mapper;

import com.kuang.pojo.User;
import org.mybatis.spring.SqlSessionTemplate;

import java.util.List;

public class UserMapperImpl implements UserMapper {
    private SqlSessionTemplate sqlSessionTemplate;

    public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
        this.sqlSessionTemplate = sqlSessionTemplate;
    }

    @Override
    public List<User> selectUser() {
        UserMapper userMapper = sqlSessionTemplate.getMapper(UserMapper.class);
        return userMapper.selectUser();
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd">

    <import resource="spring-dao.xml"/>

    <bean id="userMapper" class="com.kuang.mapper.UserMapperImpl">
        <property name="sqlSessionTemplate" ref="sqlSessionTemplate"/>
    </bean>

</beans>

import com.kuang.mapper.UserMapper;
import com.kuang.pojo.User;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class MyTest {
    @Test
    public void testBasicMyBatis() throws IOException {
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        SqlSession sqlSession = sqlSessionFactory.openSession(true);
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        List<User> users = userMapper.selectUser();
        for (User user : users) {
            System.out.println(user);
        }
    }

    @Test
    public void testSpringIntergrationMyBatisMethodOne() {
//        ApplicationContext context = new ClassPathXmlApplicationContext("spring-dao.xml");
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        List<User> users = userMapper.selectUser();
        for (User user : users) {
            System.out.println(user.toString());
        }
    }
}

20230626；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=utf-8&amp;useSSL=false&amp;serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:com/kuang/mapper/*.xml"/>
    </bean>

</beans>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd">

    <import resource="spring-dao-test-sql-session-dao-support.xml"/>

    <bean id="userMapperImplBySqlSessionDaoSupport" class="com.kuang.mapper.UserMapperImplBySqlSessionDaoSupport">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>

</beans>

package com.kuang.mapper;

import com.kuang.pojo.User;
import org.apache.ibatis.session.SqlSession;
import org.mybatis.spring.support.SqlSessionDaoSupport;

import java.util.List;

public class UserMapperImplBySqlSessionDaoSupport extends SqlSessionDaoSupport implements UserMapper {
    @Override
    public List<User> selectUser() {
//        SqlSession sqlSession = getSqlSession();
//        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
//        return userMapper.selectUser();

        return getSqlSession().getMapper(UserMapper.class).selectUser();
    }
}

import com.kuang.mapper.UserMapper;
import com.kuang.mapper.UserMapperImplBySqlSessionDaoSupport;
import com.kuang.pojo.User;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class MyTest {
    @Test
    public void testBasicMyBatis() throws IOException {
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        SqlSession sqlSession = sqlSessionFactory.openSession(true);
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        List<User> users = userMapper.selectUser();
        for (User user : users) {
            System.out.println(user);
        }
    }

    @Test
    public void testSpringIntergrationMyBatisMethodOne() {
//        ApplicationContext context = new ClassPathXmlApplicationContext("spring-dao.xml");
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        List<User> users = userMapper.selectUser();
        for (User user : users) {
            System.out.println(user.toString());
        }
    }

    @Test
    public void testSpringIntergrationMybatisUsingSqlSesionDaoSupport() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContextTestSqlSessionDaoSupport.xml");
        UserMapperImplBySqlSessionDaoSupport userMapperImplBySqlSessionDaoSupport = context.getBean("userMapperImplBySqlSessionDaoSupport", UserMapperImplBySqlSessionDaoSupport.class);
        List<User> users = userMapperImplBySqlSessionDaoSupport.selectUser();
        for (User user : users) {
            System.out.println(user.toString());
        }
    }
}

20230627；

1.propagation /ˌprɒp.əˈɡeɪ.ʃən/ 传播；增殖繁殖；

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<!-- 配置 -->
<configuration>
    <typeAliases>
        <typeAlias type="com.kuang.pojo.User" alias="user"/>
    </typeAliases>
</configuration>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=utf-8&amp;useSSL=false&amp;serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="mapperLocations" value="classpath:com/kuang/mapper/*.xml"/>
    </bean>

</beans>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="spring-dao.xml"/>

    <bean id="userMapper" class="com.kuang.mapper.UserMapperImpl">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>

</beans>

package com.kuang.pojo;

import lombok.Data;

@Data
public class User {
    private int id;
    private String name;
    private String pwd;
}

package com.kuang.mapper;

import com.kuang.pojo.User;

import java.util.List;

public interface UserMapper {
    public List<User> queryUser();
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kuang.mapper.UserMapper">
    <select id="queryUser" resultType="user">
        select * from mybatis.user;
    </select>
</mapper>

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-study</artifactId>
        <groupId>org.kuang</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>spring-11-trasaction</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.26</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.9</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.26</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.7</version>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>

</project>

package com.kuang.mapper;

import com.kuang.pojo.User;
import org.mybatis.spring.support.SqlSessionDaoSupport;

import java.util.List;

public class UserMapperImpl extends SqlSessionDaoSupport implements UserMapper{
    @Override
    public List<User> queryUser() {
        return getSqlSession().getMapper(UserMapper.class).queryUser();
    }
}

10.

import com.kuang.mapper.UserMapper;
import com.kuang.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

public class MyTest {
    @Test
    public void testEstablishEnvironment() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        List<User> users = userMapper.queryUser();
        for (User user : users) {
            System.out.println(user);
        }
    }
}

20230628；

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kuang.mapper.UserMapper">
    <select id="queryUser" resultType="user">
        select * from mybatis.user;
    </select>

    <insert id="addUser" parameterType="user">
        insert into mybatis.user (id, name, pwd) values (#{id}, #{name}, #{pwd});
    </insert>

    <delete id="deleteUser" parameterType="int">
        <!-- 故意写错用于测试 -->
        deletes from mybatis.user where id = #{id};
    </delete>
</mapper>

package com.kuang.mapper;

import com.kuang.pojo.User;

import java.util.List;

public interface UserMapper {
    public List<User> queryUser();

    public int addUser(User user);

    public int deleteUser(int id);
}

package com.kuang.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
    private int id;
    private String name;
    private String pwd;
}

package com.kuang.mapper;

import com.kuang.pojo.User;
import org.mybatis.spring.support.SqlSessionDaoSupport;

import java.util.List;

public class UserMapperImpl extends SqlSessionDaoSupport implements UserMapper{
    @Override
    public List<User> queryUser() {
        User user = new User(5, "xiaoming", "23232");
        UserMapper userMapper = getSqlSession().getMapper(UserMapper.class);
        userMapper.addUser(user);
        userMapper.deleteUser(5);
        return userMapper.queryUser();
    }

    @Override
    public int addUser(User user) {
        return getSqlSession().getMapper(UserMapper.class).addUser(user);
    }

    @Override
    public int deleteUser(int id) {
       return getSqlSession().getMapper(UserMapper.class).deleteUser(id);
    }
}

import com.kuang.mapper.UserMapper;
import com.kuang.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

public class MyTest {
    @Test
    public void testEstablishEnvironment() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        List<User> users = userMapper.queryUser();
        for (User user : users) {
            System.out.println(user);
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=utf-8&amp;useSSL=false&amp;serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="mapperLocations" value="classpath:com/kuang/mapper/*.xml"/>
    </bean>

    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="dataSourceTransactionManager">
        <tx:attributes>
            <tx:method name="add" propagation="REQUIRED"/>
            <tx:method name="delete" propagation="REQUIRED"/>
            <tx:method name="update" propagation="REQUIRED"/>
            <tx:method name="query" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* com.kuang.mapper.*.*(..))"/>
        <aop:advisor id="txAdvisor" advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>

</beans>

20230629；

1.repository [rɪˈpɒzətri]

public class UserDaoMysqlImpl implements UserDao {
    @Override
    public String getUser() {
        return "MySQL获取用户数据";
    }
}

public class UserServiceImpl implements UserService {
    UserDao userDao;

    @Override
    public UserDao getUserDao() {
        return userDao;
    }

    @Override
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    @Override
    public String getUser() {
        return userDao.getUser();
    }
}

@Configuration
public class MyConfig {
    @Bean("userDaoMysqlImpl")
    public UserDao getUserDaoMysqlImpl() {
        return new UserDaoMysqlImpl();
    }

    @Bean(name = "userServiceImpl", autowire = Autowire.BY_TYPE)
    public UserService getUserServiceImpl() {
        return new UserServiceImpl();
    }
}

public class MyTest {
    @Test
    public void testAnnotation() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        UserService userService = applicationContext.getBean("userServiceImpl", UserService.class);
        System.out.println(userService.getUser());
    }
}

20230701；

1.integration /ˌɪn.tɪˈɡreɪ.ʃən/ 集成

2.concept /ˈkɒn.sept/ 概念

3.artifact artefact /ˈɑː.tə.fækt/ 工件构件

4.assume 假定假设；

5.instantate 实例化；

<dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.8</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.26</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

public interface UserDao {
    public String getUser();
}

@Repository
public class UserDaoImpl implements UserDao {
    @Override
    public String getUser() {
        return "基础查询用户";
    }
}

@Repository
public class UserDaoMysqlImpl implements UserDao {
    @Override
    public String getUser() {
        return "MySQL获取用户";
    }
}

10.

public interface UserService {
    public String getUser();
}

11.

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    UserDaoImpl userDao;

    @Autowired
    UserDaoMysqlImpl userDaoMysql;

    @Override
    public String getUser() {
//        return userDao.getUser();
        return userDaoMysql.getUser();
    }
}

12.

@Configuration
public class MyConfig {
    @Bean
    public UserServiceImpl userService() {
        return new UserServiceImpl();
    }

    @Bean
    public UserDaoImpl userDao() {
        return new UserDaoImpl();
    }

    @Bean
    public UserDaoMysqlImpl userDaoMysql() {
        return new UserDaoMysqlImpl();
    }
}

13.

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        UserService userService = applicationContext.getBean("userService", UserService.class);
        System.out.println(userService.getUser());
    }
}

20230702；

1.idea shift+enter在下方插入行；

@Data
@Component
public class User {
    @Value("tom")
    private String name;
}

@Configuration
public class MyConfig {
    @Bean
    public User user() {
        return new User();
    }
}

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        User user = applicationContext.getBean("user", User.class);
        System.out.println(user.toString());
    }
}

@Component
@Data
public class Dog {
    public Dog() {
        System.out.println("Dog初始化");
    }

    @Value("大黄")
    private String name;
}

@Configuration
public class MyConfig {
    @Bean
    public Dog dog() {
        return new Dog();
    }
}

public class MyTest {
    @Test
    public void testInitialize() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        Dog dog = applicationContext.getBean("dog", Dog.class);
        System.out.println(dog);
    }
}

@Component
@Data
public class Address {
    @Value("烟台")
    private String address;
}

@Component
@Data
public class User {
    @Autowired
    Address address;
    @Value("小明")
    private String name;
    @Value("")
    private String[] books;
    private List<String> hobbies;
    private Map<String, String> cards;
    private Set<String> games;
    private String married;
    private Properties info;
}

10.

@Configuration
public class MyConfig {
    @Bean
    public Address address() {
        return new Address();
    }

    @Bean
    public User user() {
        return new User();
    }
}

11.

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        User user = applicationContext.getBean("user", User.class);
        System.out.println(user);
    }
}

12.

@Component
public class Cat {
    public void shout() {
        System.out.println("miao");
    }
}

13.

@Component
public class Dog {
    public void shout() {
        System.out.println("wang");
    }
}

14.

@Component
@Data
public class Person {
    @Autowired
    Cat cat;

    @Autowired
    Dog dog;

    @Value("张三")
    private String name;
}

15.

@Configuration
public class MyConfig {
    @Bean
    public Cat cat() {
        return new Cat();
    }

    @Bean
    public Dog dog() {
        return new Dog();
    }

    @Bean
    public Person person() {
        return new Person();
    }
}

16.

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        Person person = applicationContext.getBean("person", Person.class);
        person.getCat().shout();
        person.getDog().shout();
        System.out.println(person);
    }
}

20230703；

@Component
@Data
public class Pig {
    @Value("大黄")
    private String name;
}

public interface PigDao {
    public void shout();
}

@Repository
public class PigDaoImpl implements PigDao {
    @Override
    public void shout() {
        System.out.println("哄哄");
    }
}

public interface PigService {
    public void shout();
}

@Service
public class PigServiceImpl implements PigService {
    @Autowired
    PigDaoImpl pigDao;

    @Override
    public void shout() {
        pigDao.shout();
    }
}

@Controller
public class PigController {
    @Autowired
    PigServiceImpl pigService;

    public void shout() {
        pigService.shout();
    }
}

@Configuration
public class MyConfig {
    @Bean
    public PigDaoImpl pigDao() {
        return new PigDaoImpl();
    }

    @Bean
    public PigServiceImpl pigService() {
        return new PigServiceImpl();
    }

    @Bean
    public Pig pig() {
        return new Pig();
    }

    @Bean
    public PigController pigController() {
        return new PigController();
    }
}

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        PigController pigController = applicationContext.getBean("pigController", PigController.class);
        pigController.shout();
    }
}

@Component
public class Dog {
    private String name;

    @Value("大黄")
    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Dog{" +
                "name='" + name + '\'' +
                '}';
    }
}

10.

@Configuration
public class MyConfig {
    @Bean
    public Dog dog() {
        return new Dog();
    }
}

11.

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        Dog dog = applicationContext.getBean("dog", Dog.class);
        System.out.println(dog);
    }
}

12.invoke invocation 调用

13.

public interface Rent {
    public void rent();
}

14.

@Component
public class Landlord implements Rent {
    @Override
    public void rent() {
        System.out.println("房东出租房子");
    }
}

15.

@Component
public class IntermediaryProxy implements Rent {
    @Autowired
    Landlord landlord;

    @Override
    public void rent() {
        seeHouse();
        landlord.rent();
        collectIntermediaryFees();
    }

    public void seeHouse() {
        System.out.println("中介带看房子");
    }

    public void collectIntermediaryFees() {
        System.out.println("收中介费");
    }
}

16.

public interface UserDao {
    public void add();
}

17.

@Repository
public class UserDaoMysqlImpl implements UserDao {
    @Override
    public void add() {
        System.out.println("MySQL增加用户");
    }
}

18.

@Repository
public class UserDaoOracleImpl implements UserDao {
    @Override
    public void add() {
        System.out.println("Oracle增加用户");
    }
}

19.

@Repository
public class UserDaoProxyImpl implements UserDao {
    @Autowired
    UserDaoMysqlImpl userDaoMysql;

    @Autowired
    UserDaoOracleImpl userDaoOracle;

    @Override
    public void add() {
        logBefore("add");
//        userDaoMysql.add();
        userDaoOracle.add();
        logAfter("add");
    }

    public void logBefore(String msg) {
        System.out.println("[Debug]" + msg + "方法执行前");
    }

    public void logAfter(String msg) {
        System.out.println("[Debug]" + msg + "方法执行后");
    }
}

20.

@Configuration
public class MyConfig {
    @Bean
    public Landlord landlord() {
        return new Landlord();
    }

    @Bean
    public IntermediaryProxy intermediary() {
        return new IntermediaryProxy();
    }

    @Bean
    public UserDaoMysqlImpl userDaoMysql() {
        return new UserDaoMysqlImpl();
    }

    @Bean
    public UserDaoOracleImpl userDaoOracle() {
        return new UserDaoOracleImpl();
    }

    @Bean
    public UserDaoProxyImpl userDaoProxy() {
        return new UserDaoProxyImpl();
    }
}

21.

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        IntermediaryProxy intermediaryProxy = applicationContext.getBean("intermediary", IntermediaryProxy.class);
        intermediaryProxy.rent();

        UserDaoProxyImpl userDaoProxy = applicationContext.getBean("userDaoProxy", UserDaoProxyImpl.class);
        userDaoProxy.add();
}

20230704；

1.delegate /ˈdel.ɪ.ɡət/ 委托；

@Configuration
public class MyConfig {
    @Bean
    public Landlord landlord() {
        return new Landlord();
    }

    @Bean
    public ProxyInvocationHandler proxyInvocationHandler() {
        return new ProxyInvocationHandler();
    }
}

@Component
public class ProxyInvocationHandler implements InvocationHandler {
//    private Object target;
    @Autowired
    Landlord landlord;

    public Object getProxy() {
        return Proxy.newProxyInstance(this.landlord.getClass().getClassLoader(), this.landlord.getClass().getInterfaces(), this);
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        operateBefore(method.getName());
//        Object result = method.invoke(target, args);
        Object result = method.invoke(landlord, args);
        operateAfter(method.getName());
        return result;
    }

    public void operateBefore(String msg) {
        System.out.println("[Debug]" + msg + "方法执行之前");
    }

    public void operateAfter(String msg) {
        System.out.println("[Debug]" + msg + "方法执行之后");
    }
}

public class MyTest {
    @Test
    public void test() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        ProxyInvocationHandler proxyInvocationHandler = applicationContext.getBean("proxyInvocationHandler", ProxyInvocationHandler.class);
        Rent proxy = (Rent) proxyInvocationHandler.getProxy();
        proxy.rent();
    }
}

@Component
public class UserDaoDynamicProxyInvocationHandler implements InvocationHandler {
    @Autowired
    UserDaoMysqlImpl userDaoMysql;

    public Object getProxy() {
        return Proxy.newProxyInstance(this.userDaoMysql.getClass().getClassLoader(), this.userDaoMysql.getClass().getInterfaces(), this);
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        doBeforeInvoke(method.getName());
        Object result = method.invoke(userDaoMysql, args);
        doAfterInvoke(method.getName());
        return result;
    }

    public void doBeforeInvoke(String msg) {
        System.out.println("[Debug]" + msg + "方法执行之前");
    }

    public void doAfterInvoke(String msg) {
        System.out.println("[Debug]" + msg + "方法执行之后");
    }
}

@Configuration
public class MyConfig {

    @Bean
    public UserDaoMysqlImpl userDaoMysql() {
        return new UserDaoMysqlImpl();
    }

    @Bean
    public UserDaoDynamicProxyInvocationHandler userDaoDynamicProxyInvocationHandler() {
        return new UserDaoDynamicProxyInvocationHandler();
    }
}

public class MyTest {
    @Test
    public void testUserDaoDynamicProxy() {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MyConfig.class);
        UserDaoDynamicProxyInvocationHandler userDaoDynamicProxyInvocationHandler = applicationContext.getBean("userDaoDynamicProxyInvocationHandler", UserDaoDynamicProxyInvocationHandler.class);
        UserDao proxy = (UserDao) userDaoDynamicProxyInvocationHandler.getProxy();
        proxy.add();
    }
}

20230705；

1.aspect /ˈæs.pekt/ 方面、层面；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="userService" class="com.kuang.aop.impl.UserServiceImpl"/>
    <bean id="myPointCut" class="com.kuang.pointcut.MyPointCut"/>

    <aop:aspectj-autoproxy/>

</beans>

public interface UserService {
    public void add();
}

public class UserServiceImpl implements UserService {
    @Override
    public void add() {
        System.out.println("增加一个用户");
    }
}

<dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.7</version>
        </dependency>

@Aspect
public class MyPointCut {
    @Before("execution(* com.kuang.aop.impl.UserServiceImpl.*(..))")
    public void logBefore() {
        System.out.println("[Debug]方法执行前执行@Before");
    }
}

public class MyTest {
    @Test
    public void testBeforeByXML() {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService userService = applicationContext.getBean("userService", UserService.class);
        userService.add();
    }
}

20230707；

public interface UserService {
    public void add();
    public void delete();
}

public class UserServiceImpl implements UserService {
    @Override
    public void add() {
        System.out.println("增加一个用户");
    }

    @Override
    public void delete() {
        System.out.println("删除一个用户");
    }
}

@Aspect
public class MyPointCut {
    @Before("execution(* com.kuang.aop.impl.UserServiceImpl.*(..))")
    public void logBefore() {
        System.out.println("[Debug]方法执行前执行@Before");
    }

    @After("execution(* com.kuang.aop.impl.UserServiceImpl.*(..))")
    public void logAfter() {
        System.out.println("[Debug]方法执行后执行@After");
    }

    @Around("execution(* com.kuang.aop.impl.UserServiceImpl.*(..))")
    public void logAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        System.out.println("[Debug]方法执行前执行@Around");
        proceedingJoinPoint.proceed();
        System.out.println("[Debug]方法执行后执行@Around");
    }
}

public class MyTest {
    @Test
    public void testBeforeByXML() {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService userService = applicationContext.getBean("userService", UserService.class);
        userService.add();
        userService.delete();
    }
}

20230708；

@Data
public class User {
    private String id;
    private String name;
    private String pwd;
}

public interface UserMapper {
    public List<User> getUser();
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <typeAlias type="com.kuang2.pojo.User" alias="user"/>
    </typeAliases>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/mybatis?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=utf8&amp;serverTimezone=GMT%2B8"/>
                <property name="username" value="root"/>
                <property name="password" value="root"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="com/kuang2/mapper/UserMapper.xml"/>
    </mappers>
</configuration>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kuang2.mapper.UserMapper">
    <select id="getUser" resultType="user">
        select * from mybatis.user;
    </select>
</mapper>

public class MyTest {
    @Test
    public void testBasicMybatis() throws IOException {
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        SqlSession sqlSession = sqlSessionFactory.openSession(true);
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        List<User> users = userMapper.getUser();
        for (User user : users) {
            System.out.println(user);
        }
    }
}

20230710；

public class UserMapperImpl implements UserMapper {
    private SqlSessionTemplate sqlSessionTemplate;

    public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
        this.sqlSessionTemplate = sqlSessionTemplate;
    }

    @Override
    public List<User> getUser() {
        UserMapper userMapper = sqlSessionTemplate.getMapper(UserMapper.class);
        List<User> users = userMapper.getUser();
        return users;
    }
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <typeAlias type="com.kuang2.pojo.User" alias="user"/>
    </typeAliases>
</configuration>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=utf8&amp;serverTimezone=GMT%2B8"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config-with-spring-first.xml"/>
        <property name="mapperLocations" value="classpath:/com/kuang2/mapper/*.xml"/>
    </bean>

    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="spring-dao.xml"/>

    <bean id="userMapper" class="com.kuang2.mapper.UserMapperImpl">
        <property name="sqlSessionTemplate" ref="sqlSessionTemplate"/>
    </bean>
</beans>

@Test
    public void testSpringMyBatisFirst() {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContextSpringMybatisFirst.xml");
        UserMapper userMapper = applicationContext.getBean("userMapper", UserMapper.class);
        List<User> users = userMapper.getUser();
        for (User user : users) {
            System.out.println(user);
        }
    }

public class UserMapperImplBySqlSessionDaoSupport extends SqlSessionDaoSupport implements UserMapper {
    @Override
    public List<User> getUser() {
        return getSqlSession().getMapper(UserMapper.class).getUser();
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=utf8&amp;serverTimezone=GMT%2B8"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config-with-spring-first.xml"/>
        <property name="mapperLocations" value="classpath:/com/kuang2/mapper/*.xml"/>
    </bean>

</beans>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="spring-dao-by-sql-session-dao-support.xml"/>

    <bean id="userMapper" class="com.kuang2.mapper.UserMapperImplBySqlSessionDaoSupport">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>
</beans>

@Test
    public void testSpringMyBatisUsingSqlSessionDaoSupport() {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContextTestSqlSessionDaoSupport.xml");
        UserMapper userMapper = applicationContext.getBean("userMapper", UserMapper.class);
        List<User> users = userMapper.getUser();
        for (User user : users) {
            System.out.println(user);
        }
    }

20230711；

1.propagation /ˌprɒp.əˈɡeɪ.ʃən/ 传播 --》事务传播行为；

@Data
@AllArgsConstructor
public class User {
    private int id;
    private String name;
    private String pwd;
}

public interface UserMapper {
    public List<User> queryUser();

    public int addUser(User user);

    public int deleteUser(int id);
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kuang3.mapper.UserMapper">
    <select id="queryUser" resultType="user">
        select * from mybatis.user;
    </select>

    <insert id="addUser" parameterType="user">
        insert into mybatis.user (id, name, pwd) values (#{id}, #{name}, #{pwd});
    </insert>

    <!-- 故意写错用于测试事务 -->
    <delete id="deleteUser" parameterType="java.lang.Integer">
        deletes from mybatis.user where id = #{id};
    </delete>
</mapper>

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <typeAlias type="com.kuang3.pojo.User" alias="user"/>
    </typeAliases>
</configuration>

public class UserMapperImpl extends SqlSessionDaoSupport implements UserMapper {
    @Override
    public int addUser(User user) {
        return getSqlSession().getMapper(UserMapper.class).addUser(user);
    }

    @Override
    public int deleteUser(int id) {
        return getSqlSession().getMapper(UserMapper.class).deleteUser(id);
    }

    @Override
    public List<User> queryUser() {
        User user = new User(5, "pingFanLiLiang", "123123");
        UserMapper userMapper = getSqlSession().getMapper(UserMapper.class);
        userMapper.addUser(user);
        userMapper.deleteUser(5);
        return userMapper.queryUser();
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=utf8&amp;serverTimezone=GMT%2B8"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config-for-transaction.xml"/>
        <property name="mapperLocations" value="classpath:/com/kuang3/mapper/*.xml"/>
    </bean>

    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="dataSourceTransactionManager">
        <tx:attributes>
<!--            <tx:method name="add" propagation="REQUIRED"/>-->
<!--            <tx:method name="delete" propagation="REQUIRED"/>-->
<!--            <tx:method name="update" propagation="REQUIRED"/>-->
<!--            <tx:method name="query" read-only="true"/>-->
            <tx:method name="queryUser" propagation="REQUIRED"/>
<!--            <tx:method name="*" propagation="REQUIRED"/>-->
        </tx:attributes>
    </tx:advice>

    <aop:config>
        <aop:pointcut id="pointCut" expression="execution(* com.kuang3.mapper.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointCut"/>
    </aop:config>
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="spring-dao-for-transaction.xml"/>

    <bean id="userMapperImpl" class="com.kuang3.mapper.UserMapperImpl">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>

</beans>

public class MyTest {
    @Test
    public void testBaseSpringMyBatis() {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContextForTransaction.xml");
        UserMapper userMapper = applicationContext.getBean("userMapperImpl", UserMapper.class);
        List<User> users = userMapper.queryUser();
        for (User user : users) {
            System.out.println(user);
        }
    }
}

posted on 2023-06-09 14:01 平凡力量阅读(25) 评论(0) 编辑收藏举报