四：SSM框架整合

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

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  </beans>



  • mybatis.xml

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    </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>