SSM框架整合思路

Spring在整合中起到的作用（面试时常问到）

Spring管理持久层的mapper。

Spring管理业务层的service，service可以调用mapper接口。Spring进行事物控制。

Spring管理表现层的Handler，handler可以调用service接口。

mapper,service,handler都是javabean。
Spring的核心（面试时常问到）

Ioc：依赖注入、控制反转。意思是在一个类中不用new关键字来声明对象，而是在xml文件中配置相应的节点即可，这样使整个程序变得灵活多样。

aop：面对切面编程。Spring中AOP代理由Spring的IOC容器负责生成、管理，其依赖关系也由IOC容器负责管理。
工程结构

管理mybatis的 xml 文件（单独使用mybatis时需要配置许多，如数据库连接等，现与Spring进行整合，这些东西配置在了管理Spring的xml文件中）

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>

 <!-- 配置别名 -->

 <typeAliases>

 <package name="cn.itcast.ssm.po"/>

 </typeAliases>

 <!-- <mappers>

 <package name="cn.study.ssm.mapper" />

 </mappers> -->

 </configuration>

Spring配置文件

log4j.properties（日志文件，直接复制即可，开发模式使用DEBUG）

 # Global logging configuration

 #

 log4j.rootLogger=DEBUG, stdout

 # Console output...

 log4j.appender.stdout=org.apache.log4j.ConsoleAppender

 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

 log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

数据库连接文件

db.properties（账号密码是我的数据库的，修改即可）

 jdbc.driver=com.mysql.jdbc.Driver

 jdbc.url=jdbc:mysql://localhost:3306/device?characterEncoding=utf-8

 jdbc.username=root

 jdbc.password=root

applicationContext-dao.xml（Spring管理持久层的mapper）

 <?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"

 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-3.2.xsd

 http://www.springframework.org/schema/mvc

 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

 http://www.springframework.org/schema/context

 http://www.springframework.org/schema/context/spring-context-3.2.xsd

 http://www.springframework.org/schema/aop

 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

 http://www.springframework.org/schema/tx

 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

 <!-- 加载配置文件 -->

 <context:property-placeholder location="classpath:db.properties"/>

 <!-- 数据库连接池 -->

 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"

 destroy-method="close">

 <property name="driverClassName" value="${jdbc.driver}"/>

 <property name="url" value="${jdbc.url}"/>

 <property name="username" value="${jdbc.username}"/>

 <property name="password" value="${jdbc.password}"/>

 <property name="maxActive" value="10"/>

 <property name="maxIdle" value="5"/>

 </bean>	

 <!-- SqlSessionFactory -->

 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

 <!-- 数据源 -->

 <property name="dataSource" ref="dataSource" />

 <!--配置mybatis文件  -->

 <property name="configLocation"

 value="classpath:mybatis/SqlMapConfig.xml" />

 </bean>

 <!-- mapper扫描器 -->

 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

 <!-- 扫描包路径，如果扫描多个包，中间用半角逗号隔开 -->

 <property name="basePackage" value="cn.itcast.ssm.mapper"/>

 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

 </bean>

 </beans>

applicationContext-service.xml（Spring管理业务层的service）

 <?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"

 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-3.2.xsd

 http://www.springframework.org/schema/mvc

 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

 http://www.springframework.org/schema/context

 http://www.springframework.org/schema/context/spring-context-3.2.xsd

 http://www.springframework.org/schema/aop

 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

 http://www.springframework.org/schema/tx

 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

 <!-- 留言管理的service -->

 <bean id="liuyanService"

 class="cn.itcast.ssm.service.impl.LiuyanServiceImpl" />

 </beans>

applicationContext-transaction.xml（Spring进行事物控制）

 <?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"

 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-3.2.xsd

 http://www.springframework.org/schema/mvc

 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

 http://www.springframework.org/schema/context

 http://www.springframework.org/schema/context/spring-context-3.2.xsd

 http://www.springframework.org/schema/aop

 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

 http://www.springframework.org/schema/tx

 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

 <!-- 事务控制器 -->

 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

 	<!-- 数据源 -->

 	<property name="dataSource" ref="dataSource"></property>

 </bean>

 <!-- 通知 -->

 <tx:advice id="txAdvice" transaction-manager="transactionManager">

 	<tx:attributes>

 	<!-- 传播行为 -->

 		<tx:method name="save*" propagation="REQUIRED" />

 		<tx:method name="delete*" propagation="REQUIRED" />

 		<tx:method name="insert*" propagation="REQUIRED" />

 		<tx:method name="update*" propagation="REQUIRED" />

 		<tx:method name="find*" propagation="SUPPORTS"  read-only="true"/>

 		<tx:method name="get*" propagation="SUPPORTS"  read-only="true"/>

 		<tx:method name="select*" propagation="SUPPORTS"  read-only="true"/>

 	</tx:attributes>

 </tx:advice>

 <!-- aop:面向切面编程 -->

 <aop:config>

 	<aop:advisor advice-ref="txAdvice"

 		pointcut="execution(* cn.itcast.ssm.service.impl.*.*(..))"/>

 </aop:config>

 </beans>

springmvc.xml（Spring管理表现层的Handler）

 <?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"

 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-3.2.xsd

 http://www.springframework.org/schema/mvc

 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

 http://www.springframework.org/schema/context

 http://www.springframework.org/schema/context/spring-context-3.2.xsd

 http://www.springframework.org/schema/aop

 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

 http://www.springframework.org/schema/tx

 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

 <context:component-scan

 base-package="cn.itcast.ssm.controller" >

 </context:component-scan>

 <mvc:annotation-driven></mvc:annotation-driven>

 <!-- 视图解析器

 解析jsp解析，默认使用jstl标签，classpath下的得有jstl的包-->

 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" >

 <property name="prefix" value="/WEB-INF/jsp/"/>

 <property name="suffix" value=".jsp"/>

 </bean>

 </beans>

web.xml

 <?xml version="1.0" encoding="UTF-8"?>

 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

 <display-name>Device_web1.1</display-name>

 <!-- 加载spring容器 -->

 <context-param>

 <param-name>contextConfigLocation</param-name>

 <param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value>

 </context-param>

 <listener>

 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

 </listener>

 <servlet>

 <servlet-name>springmvc</servlet-name>

 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

 <init-param>

 <param-name>contextConfigLocation</param-name>

 <param-value>classpath:spring/springmvc.xml</param-value>

 </init-param>

 </servlet>

  <servlet-mapping>

 <servlet-name>springmvc</servlet-name>

 <url-pattern>*.action</url-pattern>

  </servlet-mapping>

 <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>

 <welcome-file-list>

 <welcome-file>index.html</welcome-file>

 <welcome-file>index.htm</welcome-file>

 <welcome-file>index.jsp</welcome-file>

 <welcome-file>default.html</welcome-file>

 <welcome-file>default.htm</welcome-file>

 <welcome-file>default.jsp</welcome-file>

 </welcome-file-list>

 </web-app>

代码实现流程

LiuyanMapper.xml-->LiuyanMapper.java-->LiuyanService.java-->LiuyanServiceImpl.java-->LiuyanController.java-->jsp

LiuyanMapper.xml

 <?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">

 <!-- namespace命名空间，作用是对sql分类隔离

 -->

 <mapper namespace="cn.itcast.ssm.mapper.LiuyanMapper"> 

 <select id="findLiuyanList"  parameterType="cn.itcast.ssm.po.LiuyanQueryVo"

 resultType="cn.itcast.ssm.po.LiuyanCustom">

 SELECT * FROM liuyan  ORDER BY TIMER DESC

 </select> 

 <select id="findLiuyanByname"  parameterType="java.lang.String"

 resultType="cn.itcast.ssm.po.LiuyanCustom">

 SELECT * FROM liuyan WHERE liuyan LIKE  '%${value}%'

 </select>

 <insert id="insertLiuyan" parameterType="cn.itcast.ssm.po.Liuyan">

 insert into liuyan(liuyan) value(#{liuyan})

 </insert>

 <update id="updateLiuyan" parameterType="cn.itcast.ssm.po.Liuyan">

 UPDATE liuyan SET liuyan=#{liuyan} WHERE id=#{id}

 </update>

 <select id="findLiuyanBynameOne"  parameterType="java.lang.String"

 resultType="cn.itcast.ssm.po.LiuyanCustom">

 SELECT * FROM liuyan WHERE liuyan=#{liuyan}

 </select>

 <delete id="deleteLiuyanBynameOne" parameterType="java.lang.String">

 DELETE FROM liuyan WHERE liuyan=#{liuyan}

 </delete>

 </mapper>

LiuyanMapper.java

 package cn.itcast.ssm.mapper;

 import java.util.List;

 import cn.itcast.ssm.po.Liuyan;

 import cn.itcast.ssm.po.LiuyanCustom;

 import cn.itcast.ssm.po.LiuyanQueryVo;

 public interface LiuyanMapper {

 public List<LiuyanCustom> findLiuyanList(LiuyanQueryVo liuyanQueryVo) throws Exception;

 public List<LiuyanCustom> findLiuyanByname(String liuyan) throws Exception;

 public Liuyan findLiuyanBynameOne(String liuyan) throws Exception;

 public void insertLiuyan(Liuyan liuyan) throws Exception;

 int updateLiuyan(Liuyan liuyan) throws Exception;

 public void deleteLiuyanBynameOne(String liuyan) throws Exception;

 }

LiuyanService.java

 package cn.itcast.ssm.service;

 import java.util.List;

 import cn.itcast.ssm.po.Liuyan;

 import cn.itcast.ssm.po.LiuyanCustom;

 import cn.itcast.ssm.po.LiuyanQueryVo;

 public interface LiuyanService {

 public List<LiuyanCustom> findLiuyanList(LiuyanQueryVo liuyanQueryVo) throws Exception;

 public List<LiuyanCustom> findLiuyanByname(String liuyan) throws Exception;

 public Liuyan findLiuyanBynameOne(String liuyan) throws Exception;

 public void insertLiuyan(Liuyan liuyan) throws Exception;

 int updateLiuyan(Integer id,Liuyan liuyan) throws Exception;

 public void deleteLiuyanBynameOne(String liuyan) throws Exception;

 }

LiuyanServiceImpl.java

 package cn.itcast.ssm.service.impl;

 import java.util.List;

 import org.apache.ibatis.annotations.Param;

 import org.springframework.beans.factory.annotation.Autowired;

 import cn.itcast.ssm.mapper.LiuyanMapper;

 import cn.itcast.ssm.po.Liuyan;

 import cn.itcast.ssm.po.LiuyanCustom;

 import cn.itcast.ssm.po.LiuyanQueryVo;

 import cn.itcast.ssm.service.LiuyanService;

 public class LiuyanServiceImpl implements LiuyanService{

 @Autowired

 private LiuyanMapper liuyanMapper;

 @Override

 public List<LiuyanCustom> findLiuyanList(LiuyanQueryVo liuyanQueryVo) throws Exception {

 // TODO 自动生成的方法存根

 return liuyanMapper.findLiuyanList(liuyanQueryVo);

 }

 @Override

 public List<LiuyanCustom> findLiuyanByname(String liuyan) throws Exception {

 // TODO 自动生成的方法存根

 List<LiuyanCustom> liuyanCustom = liuyanMapper.findLiuyanByname(liuyan);

 return liuyanCustom;

 }

 @Override

 public void insertLiuyan(Liuyan liuyan) throws Exception {

 // TODO 自动生成的方法存根

  liuyanMapper.insertLiuyan(liuyan);

  return ;

 }

 @Override

 public int updateLiuyan(Integer id,Liuyan liuyan) throws Exception {

 return liuyanMapper.updateLiuyan(liuyan);

 }

 @Override

 public Liuyan findLiuyanBynameOne(String liuyan) throws Exception {

 // TODO 自动生成的方法存根

  liuyanMapper.findLiuyanBynameOne(liuyan);

 return liuyanMapper.findLiuyanBynameOne(liuyan);

 }

 @Override

 public void deleteLiuyanBynameOne(String liuyan) throws Exception {

 // TODO 自动生成的方法存根

 liuyanMapper.deleteLiuyanBynameOne(liuyan);

 	}

 }

LiuyanController.java

 package cn.itcast.ssm.controller;

 import java.util.List;

 import javax.servlet.http.HttpServletRequest;

 import org.apache.ibatis.annotations.Param;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.stereotype.Controller;

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

 import org.springframework.web.bind.annotation.RequestParam;

 import org.springframework.web.servlet.ModelAndView;

 import cn.itcast.ssm.po.Liuyan;

 import cn.itcast.ssm.po.LiuyanCustom;

 import cn.itcast.ssm.service.LiuyanService;

 @Controller

 @RequestMapping("/liuyan")

 public class LiuyanController {

 @Autowired

 private LiuyanService liuyanService;

 @RequestMapping("/queryLiuyan")

 public ModelAndView queryLiuyan()throws Exception {

         //调用service查找 数据库，查询商品列表，这里使用静态数据模拟

 		List<LiuyanCustom> liuyanList = liuyanService.findLiuyanList(null);

 		//返回ModelAndView

 		ModelAndView modelAndView =  new ModelAndView();

 		//相当 于request的setAttribut，在jsp页面中通过itemsList取数据

 		modelAndView.addObject("liuyanList",liuyanList);

 		//modelAndView.addObject("liuyanList", liuyanList);

 		//不可以有空格

 		modelAndView.setViewName("liuyan/liuyanList");

 		return modelAndView;

 	}

 	@RequestMapping("/queryLiuyanByname")

 	public ModelAndView queryLiuyanByname()throws Exception {

         //调用service查找 数据库，查询商品列表，这里使用静态数据模拟

 		List<LiuyanCustom> liuyanCustom = liuyanService.findLiuyanByname("任秀兴");

 		//返回ModelAndView

 		ModelAndView modelAndView =  new ModelAndView();

 		//相当 于request的setAttribut，在jsp页面中通过itemsList取数据

 		modelAndView.addObject("liuyanList",liuyanCustom);

 		//modelAndView.addObject("liuyanList", liuyanList);

 		//不可以有空格

 		modelAndView.setViewName("liuyan/liuyanList");

 		return modelAndView;

 	}

 	@RequestMapping("/insertLiuyan")

 	public String insertLiuyan(HttpServletRequest request)throws Exception {

         //调用service查找 数据库

 		String strliuyan = request.getParameter("liuyan");

 		//String strliuyan1 = request.getParameter("liuyan1");

 		System.out.println(request.getParameter("liuyan"));

 		//System.out.println(request.getParameter("liuyan1"));

 		Liuyan liuyan = new Liuyan();

 		liuyan.setLiuyan(strliuyan);

 	    liuyanService.insertLiuyan(liuyan);

 	    //重定向

 	    return "redirect:queryLiuyan.action";

 	}

 	@RequestMapping("/updateLiuyan")

 	public ModelAndView updateLiuyan(String liuyan)throws Exception {

 	Liuyan speak = liuyanService.findLiuyanBynameOne(liuyan);

 	ModelAndView modelAndView =  new ModelAndView();

 	modelAndView.addObject("speak",speak);

 	modelAndView.setViewName("liuyan/updateliuyan");

 	return modelAndView;

 }

 	@RequestMapping("/updateLiuyanSubmit")

 	public String updateLiuyanSubmit(HttpServletRequest request,Liuyan liuyan)throws Exception {

 		String strid = request.getParameter("id");

 		System.out.println(strid);

 		int id = Integer.parseInt(strid);

 		liuyan.setId(id);

 	    liuyanService.updateLiuyan(id,liuyan);

 	    //重定向

 	    return "redirect:queryLiuyan.action";

 	}

 	@RequestMapping("/deleteLiuyan")

 	public String deleteLiuyan(HttpServletRequest request)throws Exception {

 	String strliuyan = request.getParameter("liuyan");

 	liuyanService.deleteLiuyanBynameOne(strliuyan);

 	 return "redirect:queryLiuyan.action";

 	}

 		}

jsp

liuyanList.jsp

 <%@page import =" java.text.SimpleDateFormat" %>

 <%@page import =" java.util.Date" %>

 <%@ page language="java" contentType="text/html; charset=UTF-8"

 	 pageEncoding="UTF-8"%>

 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

 <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt"  prefix="fmt"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

 <title>留言板</title>

 </head>

 <body>

 <form

 action="${pageContext.request.contextPath }/liuyan/insertLiuyan.action"

 method="post">

 留言：

 <table width="100%" border=1>

 <tr>

 <td>

 <input type="text" name="liuyan" id="liuyan" />

 <!-- <input type="text" name="liuyan1" id="liuyan1" /> -->

 <input type="submit" value="提交"/></td>

 </tr>

 </table>

 列表：

 <table width="100%" border=1>

 <tr>

 <td>时间</td>

 <td>留言</td>

 <td>修改</td>

 <td>删除</td>

 </tr>

 <c:forEach items="${liuyanList }" var="speak">

 <tr>

 <%

 SimpleDateFormat format=new SimpleDateFormat("yyyy年MM月dd日HH时mm分ss秒");

 String time=format.format(new Date());

 %>

 <td><fmt:formatDate value="${speak.timer }" pattern="yyyy-MM-dd HH:mm:ss"/></td>

 <td>${speak.liuyan }</td>

 <td><a href="${pageContext.request.contextPath }/liuyan/updateLiuyan.action?liuyan=${speak.liuyan}" >修改</a></td>

 <td><a href="${pageContext.request.contextPath }/liuyan/deleteLiuyan.action?liuyan=${speak.liuyan}" >删除</a></td>

 </tr>

 </c:forEach>

 </table>

 </form>

 </body>

 </html>

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