详解SSM(Spring+SpringMVC+MyBatis)的框架搭建

1、首先贴出整体的文件架构:(idea开发)

2、controller层

package com.yuanfeng.controller;/**
 * Created by yuanfeng on 2019/7/9 16:59
 */

import com.sun.deploy.net.HttpResponse;
import com.yuanfeng.pojo.SysUser;
import com.yuanfeng.service.SysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *@ClassName SysUserController
 *@Description T0D0
 *@Author yuanfeng
 *@Date 2019/7/9 16:59
 *@Version 1.0
 **/

@Controller
@Scope("prototype")
@RequestMapping("/user")
public class SysUserController {

    @Autowired
    private SysUserService sysUserService;


    @RequestMapping("/login")

    public void login(SysUser sysUser, HttpSession session, HttpServletResponse response, HttpServletRequest request) throws  Exception{
        SysUser user = sysUserService.login(sysUser);

        if(user!=null){
            session.setAttribute("user", user);
            response.getWriter().write("<script>location.href='"+request.getContextPath()+"/index.jsp';</script>");
        }else{
            response.getWriter().write("<script>alert('账号或密码错误!');location.href='"+request.getContextPath()+"/login.jsp';</script>");
        }
    }

}

3、service层的实现类

package com.yuanfeng.service.impl;/**
 * Created by yuanfeng on 2019/7/9 16:58
 */

import com.yuanfeng.mapper.SysUserMapper;
import com.yuanfeng.pojo.SysUser;
import com.yuanfeng.service.SysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

/**
 *@ClassName SysUserServiceImpl
 *@Description T0D0
 *@Author yuanfeng
 *@Date 2019/7/9 16:58
 *@Version 1.0
 **/

@Service
@Transactional
public class SysUserServiceImpl implements SysUserService {

    @Autowired
    private SysUserMapper sysUserMapper;
    @Override
    public SysUser login(SysUser sysUser) {
        return sysUserMapper.login(sysUser);
    }
}

4、Mapper层

5、applicatioContext.xml文件

<?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:tx="http://www.springframework.org/schema/tx"
	xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
	xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring
http://mybatis.org/schema/mybatis-spring-1.2.xsd 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-4.0.xsd http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">



	<!--扫描包-->
	<context:component-scan base-package="com.yuanfeng">
		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
	</context:component-scan>

	<!--加载配置文件-->

	<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
	<!--忽略没有找到的资源文件-->
	<property name="ignoreResourceNotFound" value="false"></property>
	<!--配置数据库资源文件-->
		<property name="locations">
			<list>
				<value>classpath:db.properties</value>
			</list>
		</property>
	</bean>

	<!--配置数据源-->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
		<property name="driverClass" value="${jdbc.driver}"></property>
		<property name="jdbcUrl" value="${jdbc.url}"></property>
		<property name="user" value="${jdbc.username}"></property>
		<property name="password" value="${jdbc.password}"></property>
	</bean>

	<!--配置session工厂-->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"></property>
		<!--加载mybatis主配置文件-->
		<property name="configLocation" value="classpath:mybatis-config.xml"></property>
		<!--加载Mapper的配置文件-->
		<property name="mapperLocations" value="classpath:com/yuanfeng/mapper/*.xml"></property>
		<!--给pojo层所有bean取别名-->
		<property name="typeAliasesPackage" value="com.yuanfeng.pojo"></property>
 	</bean>

	<!--Spring框架会自动为Mapper层自动生成代理，也就是说Mapper自动创建对象-->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.yuanfeng.mapper"></property>
 	</bean>
	<!--配置事务管理器-->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
	</bean>

	<!--开启注解支持-->
	<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>

6、spring-mvc.xml文件

<?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/mvc" 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/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">


<!-- 配置扫描控制层包 -->
    <context:component-scan base-package="com.yuanfeng.controller" />

    <mvc:annotation-driven/>

    <!--
    放开静态资源  方式1:
    <mvc:resources location="/media/" mapping="/media/**"></mvc:resources>
    -->

    <!-- 放开静态资源  方式2: -->
    <mvc:default-servlet-handler/>

</beans>

耐心整理，且赞且珍惜！