SpringMVC03:SSM整合

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SpringMVC03:SSM整合

阅读原文时间：2023年07月08日阅读：1

一、搭建整合环境

1、ssm整合说明

2、搭建环境

二、Spring框架代码的编写

1、编写Spring框架（处理业务层）

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
    <!-- 开启注解扫描，希望处理service和dao，controller不需要spring框架去处理 -->
    <context:component-scan base-package="cn.itcast">
        <!--可以配置哪些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
</beans>

TestSpring.java

package cn.itcast.test;

import cn.itcast.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestSpring {
    @Test
    public void run1(){
        //加载Spring的配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:ApplicationContext.xml");
        //获取对象
        AccountService as = (AccountService) ac.getBean("accountService");
        //调用方法
        as.findAll();
    }
}

AccountServiceImpl.java

package cn.itcast.service.impl;

import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
import org.springframework.stereotype.Service;

import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements AccountService {
    @Override
    public List<Account> findAll() {
        System.out.println("业务层：查询所有账户……");
        return null;
    }

    @Override
    public void savAccount(Account account) {
        System.out.println("业务层：保存账户……");
    }
}

三、Spring整合SpringMVC框架

1、编写SpringMVC框架

web.xml

<!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>
  <!--配置前端控制器-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--1.希望加载springmvc.xml配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--2.启动服务器，创建该Servlet-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!--解决中文乱码的过滤器-->
  <filter>
    <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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
       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">
    <!--开启注解扫描，只扫描Controller注解-->
    <context:component-scan base-package="cn.itcast">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--配置视图解析器，往哪跳转-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!--过滤静态资源-->
    <mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
    <!--开启SpringMVC注解的支持-->
    <mvc:annotation-driven/>
</beans>

AccountController.java

package cn.itcast.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * 账户web控制器
 */
@Controller
@RequestMapping("/account")
public class AccountController {
    @RequestMapping("/findAll")
    public String findAll(){
        System.out.println("表现层：查询所有的账户信息");
        return "list";
    }
}

2、Spring整合SpringMVC的框架

AccountController.java

package cn.itcast.controller;

import cn.itcast.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * 账户web控制器
 */
@Controller
@RequestMapping("/account")
public class AccountController {
    //放入容器
    @Autowired
    private AccountService accountService;
    @RequestMapping("/findAll")
    public String findAll(){
        System.out.println("表现层：查询所有的账户信息");
        //整合：成功调用业务层方法（依赖注入）
        accountService.findAll();
        return "list";
    }
}

web.xml

<!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>
  <!--配置Spring的监听器，默认只加载WEB-INF目录下的applicationContext.xml文件-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
 <!--设置配置文件的路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
 </web-app>

四、Spring整合MyBatis框架

1、编写MyBatis框架

SqlMapConfig.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>
    <!--配置环境-->
    <environments default="mysql">
        <environment id="mysql">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql:///ssm"/>
                <property name="username" value="root"/>
                <property name="password" value="root"/>
            </dataSource>
        </environment>
    </environments>
    <!--引入映射配置文件-->
    <mappers>
        <!--<mapper resource="cn/itcast/dao/xxx.xml"></mapper>-->
        <!--<mapper class="cn/itcast/dao/AccountDao" />-->
        <package name="cn.itcast.dao"/>
    </mappers>
</configuration>

AccountDao.java

package cn.itcast.dao;

import cn.itcast.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
 * 账户接口
 * 使用代理可以只写接口不写实现类
 */
public interface AccountDao {
    /**
     * 查询所有
     * @return
     */
    @Select("select * from account")
    public List<Account> findAll();
    /**
     * 保存账户信息
     * @param account
     */
    @Insert("insert into account (name,money) values (#{name},#{money})")
    public void savAccount(Account account);
}

TestMybatis.java

package cn.itcast.test;

import cn.itcast.dao.AccountDao;
import cn.itcast.domain.Account;
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.InputStream;
import java.util.List;

public class TestMybatis {
    @Test
    public void run1() throws Exception{
        //加载Mybatis配置文件
        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
        //创建SqlSessionFactory对象
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
        //创建SqlSession对象
        SqlSession session = factory.openSession();
        //获取到代理对象
        AccountDao dao = session.getMapper(AccountDao.class);
        //查询所有数据
        List<Account> list = dao.findAll();
        for (Account account : list) {
            System.out.println(account);
        }
        //释放资源
        session.close();
        in.close();

    }
}

2、编写MyBatis框架测试保存的方法

TestMybatis.java

 /**
     * 测试保存
     * @throws Exception
     */
    @Test
    public void run2() throws Exception{
        Account account = new Account();
        account.setName("王五");
        account.setMoney(3d);
        //加载Mybatis配置文件
        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
        //创建SqlSessionFactory对象
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
        //创建SqlSession对象
        SqlSession session = factory.openSession();
        //获取到代理对象
        AccountDao dao = session.getMapper(AccountDao.class);
        //保存
        dao.savAccount(account);
        //增删改需要考虑事务，提交事务
        session.commit();
        //释放资源
        session.close();
        in.close();
    }

3、Spring整合MyBatis框架

applicat

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!-- 开启注解扫描，希望处理service和dao，controller不需要spring框架去处理 -->
    <context:component-scan base-package="cn.itcast">
        <!--可以配置哪些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--Spring整合Mybatis框架-->
    <!--配置c3p0连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
        <property name="user" value="root"/>
        <property name="password" value="root"/>
    </bean>
    <!--配置SqlSessionFactory工厂对象-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!--配置AccountDao接口所在的包-->
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.itcast.dao" />
    </bean>
</beans>

package cn.itcast.dao;

import cn.itcast.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * 账户接口
 * 使用代理可以只写接口不写实现类
 */
@Repository
public interface AccountDao {
    /**
     * 查询所有
     * @return
     */
    @Select("select * from account")
    public List<Account> findAll();
    /**
     * 保存账户信息
     * @param account
     */
    @Insert("insert into account (name,money) values (#{name},#{money})")
    public void savAccount(Account account);
}

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h3>查询了所有账户信息</h3>
    ${list}
    <h3>jstl遍历</h3>
    <c:forEach items="${list}" var="account">
        ${account.name} <br>
    </c:forEach>
</body>
</html>

package cn.itcast.controller;

import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

/**
 * 账户web控制器
 */
@Controller
@RequestMapping("/account")
public class AccountController {
    //放入容器
    @Autowired
    private AccountService accountService;
    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层：查询所有的账户信息");
        //整合：成功调用业务层方法（依赖注入）
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "list";
    }
}

package cn.itcast.service.impl;

import cn.itcast.dao.AccountDao;
import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements AccountService {
    @Autowired
    private AccountDao accountDao;
    @Override
    public List<Account> findAll() {
        System.out.println("业务层：查询所有账户……");
        return accountDao.findAll();
    }

    @Override
    public void savAccount(Account account) {
        System.out.println("业务层：保存账户……");
        accountDao.savAccount(account);
    }
}

controller调用service，service调dao，通过controller从页面的ModelAndView进行返回

4、Spring整合MyBatis框架配置事务

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!-- 开启注解扫描，希望处理service和dao，controller不需要spring框架去处理 -->
    <context:component-scan base-package="cn.itcast">
        <!--可以配置哪些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--Spring整合Mybatis框架-->
    <!--配置c3p0连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
        <property name="user" value="root"/>
        <property name="password" value="root"/>
    </bean>
    <!--配置SqlSessionFactory工厂对象-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!--配置AccountDao接口所在的包-->
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.itcast.dao" />
    </bean>
    <!--配置Spring框架的声明式事务管理-->
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>
    <!--配置AOP增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))"></aop:advisor>
    </aop:config>
</beans>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<a href="account/findAll">测试</a>
<h3>测试保存</h3>
<form action="account/save" method="post">
    姓名：<input type="text" name="name"><br>
    金额：<input type="text" name="money"><br>
    <input type="submit" value="get now!"><br>
</form>
</body>
</html>

package cn.itcast.controller;

import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/**
 * 账户web控制器
 */
@Controller
@RequestMapping("/account")
public class AccountController {
    //放入容器
    @Autowired
    private AccountService accountService;
    @RequestMapping("/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        accountService.savAccount(account);
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return;
    }
}

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