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四:SSM框架整合

Spring+Spring Mvc+Mybatis整合:

代码实现:

1.创建maven工程 pom.xml

  <dependencies>
<!--  spring mvc-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
<!--    spring JDBC-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
<!--    Spirng Aop-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>5.2.3.RELEASE</version>
    </dependency>
<!--    Mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!--     mysql的驱动 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.19</version>
    </dependency>
<!--    C3P0-->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>
<!--    JSTL-->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
<!--    ServletAPI-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
    </dependency>
    <!--      lombox-->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.10</version>
    </dependency>
  </dependencies>

2.依次搭建 Web.xml

配置Spring Mvc 、Spring 设置字符编码过滤器、加载静态资源

<!DOCTYPE web-app PUBLIC
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <!--  Spring-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:Spring.xml</param-value>
  </context-param>
  <!--  监听器-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--  SpingMvc-->
  <servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--  字符编码过滤器-->
  <filter>
    <filter-name>character</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>
    <!--    请求相应编码-->
    <init-param>
      <param-name>forceRequestEncoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
    <init-param>
      <param-name>forceResponseEncoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
    <init-param>
      <param-name>character</param-name>
      <param-value>/*</param-value>
    </init-param>
  </filter>
  <!--    加载静态资源-->
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.js</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.css</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.jpg</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.png</url-pattern>
  </servlet-mapping>
</web-app>

3创建相应框架的配置文件

spring.xml

springmvx.xml

mybatis.xml

  • Spring.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: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 https://www.springframework.org/schema/aop/spring-aop.xsd">
    <!--    C3p0数据源-->
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
            <property name="user" value="root"></property>
            <property name="password" value="123456"></property>
            <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
            <property name="jdbcUrl"
                      value="jdbc:mysql://localhost:3306/text?serverTimezone=UTC&amp;useUnicode=true&amp;characterEncoding=utf8"></property>
        </bean>
    <!--    sqlSessionFactory-->
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource"></property>
            <property name="mapperLocations" value="classpath:com/southwind/repository/*.xml"></property>
            <property name="configLocation" value="classpath:mybatis.xml"></property>
        </bean>
    <!--    扫描Mapper接口-->
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.southwind.repository"></property>
        </bean>
    <!--    事物管理-->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"></property>
        </bean>
    <!--    配置事物增强-->
        <tx:advice id="txAdvice" transaction-manager="transactionManager">
            <tx:attributes>
                <tx:method name="*"/>
            </tx:attributes>
        </tx:advice>
        <aop:config>
            <aop:pointcut id="txPoint" expression="execution(*com.southwind.service.impl.*.*(..)"/>
            <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"></aop:advisor>
        </aop:config>
    </beans>
    
  • mybatis.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>
        <settings>
            <!--        打印SQL-->
            <setting name="logImpl" value="STDOUT_LOGGING"/>
            <!--        延迟加载-->
    <!--        <setting name="lazyLoadingEnabled" value="true"/>-->
            <!--        开启二级缓存-->
    <!--        <setting name="cacheEnabled" value="true"/>-->
        </settings>
        <typeAliases>
    <!--        指定一个包mybatis会在指定的包名下搜索需要的javaBean-->
            <package name="com.southwind.entity"></package>
        </typeAliases>
    </configuration>
    
  • Springmvc.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"
           xmlns:mvc="http://www.springframework.org/schema/cache"
           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 http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
        <mvc:annotation-driven/>
        <!--    配置扫包-->
        <context:component-scan base-package="com.southwind"></context:component-scan>
        <!--    视图解析器-->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
            <!--        前缀-->
            <property name="prefix" value="/"></property>
            <!--        后缀-->
            <property name="suffix" value=".jsp"></property>
        </bean>
    </beans>
    

4.实体类

package com.southwind.entity;

import lombok.Data;

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

5.Handeler

package com.southwind.controller;

import com.southwind.serivce.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping("/user")
public class UserHandler {
    @Autowired
    private UserService userService;
    @GetMapping("index")
    public ModelAndView index(){
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.setViewName("index");
        modelAndView.addObject("list",userService.findAll());
        return modelAndView;
    }
}

6.业务Service

package com.southwind.serivce;

import com.southwind.entity.User;

import java.util.List;

public interface UserService {
    public List<User>  findAll();
}
package com.southwind.serivce.impl;

import com.southwind.entity.User;

import com.southwind.repository.UserRepository;
import com.southwind.serivce.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserRepository userRepository;
    @Override
    public List<User> findAll() {
        return userRepository.findAll();
    }
}

7.持久层:Mybatis

package com.southwind.repository;

import com.southwind.entity.User;

import java.util.List;

public interface UserRepository {
    public List<User> findAll();
}
<?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.shouthwind.repository.UserRepository" >
    <select id="findAll" resultType="User">
        select *from  people
    </select>
</mapper>

8.jsp视图

<%--
  Created by IntelliJ IDEA.
  User: 郝泾钊
  Date: 2022-04-09
  Time: 21:43
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@page isELIgnored="false" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <c:forEach items="${list}" var="user">
        ${user.id}-${user.name}-${user.money}
    </c:forEach>
</body>
</html>
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