整合SSM

创建数据库

CREATE DATABASE ssmbuild

USE ssmbuild
CREATE TABLE books ( 
bookID INT(10) NOT NULL AUTO_INCREMENT,
bookName VARCHAR(100) NOT NULL,
bookCounts INT(11) NOT NULL, 
detail VARCHAR(200) NOT NULL, 
KEY bookID (bookID) 
  )ENGINE=INNODB DEFAULT CHARSET=utf8
  
INSERT INTO books(bookID,bookName,bookCounts,detail) VALUES 
(2,'MySQL',10,'从删库到跑路'),(3,'Linux',5,'从进门到进牢');

连接数据库

编写实体类

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
}

编写Dao接口

public interface BookMapper {
    //增加一个Book
    int add(Books books);

    //根据id删除一个book
    int deleteBook ( int id);

    //更新BOOK
    int updateBook (Books books);

    //根据ID查询,返回一个Book
    Books selectBooks(int id);

    //查询全部Book,返回list集合
    List<Books> AllBooks();
}

编写Daomapper.xml配置文件

<?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.Google.dao.BookMapper">
    <!--增加一个Book-->
    <insert id="add" parameterType="Books">
        insert into ssmbuild.books
            (bookID, bookName, bookCounts, detail)
        values (#{bookID}, #{bookName}, #{bookCounts}, #{detail})

    </insert>
    <!--根据id删除一个book-->
    <delete id="deleteBook" parameterType="_int">
        delete
        from ssmbuild.books
        where bookID = #{bookID}
    </delete>

    <!--更新BOOK-->
    <update id="updateBook" parameterType="Books">
        update ssmbuild.books
        set bookCounts=#{bookCounts},bookName=#{bookName},detail=#{detail}
        where bookID = #{bookID}
    </update>

    <!--根据ID查询,返回一个Book-->
    <select id="selectBooks" parameterType="_int" resultType="Books">
        select *
        from ssmbuild.books
        where bookID = #{bookID}

    </select>

    <!--查询全部Book,返回list集合-->
    <select id="AllBooks" resultType="Books">
        select *
        from ssmbuild.books
    </select>
</mapper>

serivce接口

package com.Google.service;

import com.Google.pojo.Books;

import java.util.List;

public interface BookService {

    //增加一个Book
    int add(Books books);

    //根据id删除一个book
    int deleteBook ( int id);

    //更新BOOK
    int updateBook (Books books);

    //根据ID查询,返回一个Book
    Books selectBooks(int id);

    //查询全部Book,返回list集合
    List<Books> AllBooks();

}

service实现

package com.Google.service;

import com.Google.dao.BookMapper;
import com.Google.pojo.Books;

import java.util.List;

public class BookServiceImpl implements BookService {
    private BookMapper bookMapper;
    //调用Dao层的操作
    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

    @Override
    public int add(Books books) {
        return bookMapper.add(books);
    }

    @Override
    public int deleteBook(int id) {
        return bookMapper.deleteBook(id);
    }

    @Override
    public int updateBook(Books books) {
        return bookMapper.updateBook(books);
    }

    @Override
    public Books selectBooks(int id) {
        return bookMapper.selectBooks(id);
    }

    @Override
    public List<Books> AllBooks() {
        return bookMapper.AllBooks();
    }
}

配置Mybatis-config.xml

<?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>
        <package name="com.Google.pojo"/>
    </typeAliases>

    <mappers>
        <mapper resource="com/Google/dao/BookMapper.xml"/>
    </mappers>

</configuration>

编写database.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=xxx
jdbc.password=xxx

将dao层注入到Spring中(创建一个spring-dao.xml)

<?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
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 配置整合mybatis -->
    <!-- 1.关联数据库文件 -->
    <context:property-placeholder location="classpath:database.properties"/>

    <!-- 2.数据库连接池 -->
    <!--数据库连接池
        dbcp 半自动化操作 不能自动连接
        c3p0 自动化操作(自动的加载配置文件 并且设置到对象里面)
    -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!-- 配置连接池属性 -->
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>

        <!-- c3p0连接池的私有属性 -->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!-- 关闭连接后不自动commit -->
        <property name="autoCommitOnClose" value="false"/>
        <!-- 获取连接超时时间 -->
        <property name="checkoutTimeout" value="10000"/>
        <!-- 当获取连接失败重试次数 -->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>

    <!-- 3.配置SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!-- 4.配置扫描Dao接口包,动态实现Dao接口注入到spring容器中 -->
    <!--解释 :https://www.cnblogs.com/jpfss/p/7799806.html-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="com.Google.dao"/>
    </bean>

</beans>

将service层注入到Spring中(创建一个spring-service.xml)

<?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
       http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <!--扫描service相关的bean-->
    <context:component-scan base-package="com.Google.service"/>

    <bean id="BookServiceImpl" class="com.Google.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
    </bean>


</beans>

添加WEB框架

配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!--这里要加载的是总配置文件-->
            <param-value>classpath:applicationContext.xml</param-value>
        </init-param>
        <!--与Tomcat一起启动-->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!--乱码问题-->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!--Session过期时间-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

配置spring-mvc.xml

<?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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">
    <!--开启注解驱动-->
    <mvc:annotation-driven/>
    <!--2.静态资源默认servlet配置-->
    <mvc:default-servlet-handler/>
    <!--3.扫描web相关的bean 使注解生效-->
    <context:component-scan base-package="com.Google.controller"/>
    <!--4.配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

将所有spring整合到一个applicationContext.xml中

<?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"/>
    <import resource="spring-service.xml"/>
    <import resource="spring-mvc.xml"/>
</beans>

到这里所有的配置全部都已经完成

编写Controller

@Controller
@RequestMapping("/book")
public class bookController {

    //Controller需要调用serivce层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;
    //展示所有书籍
    @RequestMapping("allBook")
···
posted @ 2022-02-13 16:29  小罗要有出息  阅读(24)  评论(0编辑  收藏  举报