SSM整合
转自：http://www.cnblogs.com/HigginCui/p/5859788.html
【SSM的系统架构】
【整合概述】
第一步:
MyBatis和Spring整合，通过Spring管理mapper接口。
使用mapper的扫描器自动扫描mapper接口在Spring中进行注册。
第二步：
通过Spring管理Service接口。
使用配置方式将Service接口配置在Spring配置文件中。
实现事务控制。
在spring的配置文件中必须配置：
第三步：
由于SpringMVC是Spring的模块，无需整合这两个。
【工程截图】
【数据库的items】
[ 表结构 ]
[ 表内数据 ]
【1.整合dao】
将Mybatis和Spring进行整合
【1.1 sqlMapConfig.xml】MyBatis的配置文件
【1.2 db.properties】数据库配置文件
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis
jdbc.username=root
jdbc.password=
【1.3 applicationContext-dao.xml】
需要配置：数据源、SqlSessionFactory、mapper扫描器
<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:property-placeholder location="classpath:db.properties"/> <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="30"/> <property name="maxIdle" value="5"/> bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml" /> bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="cn.Higgin.ssm.mapper">property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">property> bean> beans>
【1.4 逆向工程生成PO类以及mapper】（对应表的增删改查）
【1.5 手动定义商品查询mapper】
针对综合查询mapper，一般情况下会有关联查询，建议 自定义 mapper。
【1.5.1 ItemsMapperCustom.java】
package cn.Higgin.ssm.po; /** * 商品信息的扩展 */ public class ItemsCustom extends Items { //添加商品信息扩展的属性 }
【1.5.2 ItemsMapperCustom.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" >
<mapper namespace="cn.Higgin.ssm.mapper.ItemsMapperCustom" >
<sql id="query_items_where">
<if test="itemsCustom!=null">
<if test="itemsCustom.name!=null and itemsCustom.name!=''">
items.name LIKE '%${itemsCustom.name}%'
if>
if>
sql>
<select id="findItemsList" parameterType="cn.Higgin.ssm.po.ItemsQueryVo"
resultType="cn.Higgin.ssm.po.ItemsCustom">
SELECT items.* FROM items
<where>
<include refid="query_items_where">include>
where>
select>
mapper>
【2.整合service】
让spring来管理service接口。
【2.1 ItemsService.java】定义service接口
package cn.Higgin.ssm.service; import java.util.List; import cn.Higgin.ssm.po.ItemsCustom; import cn.Higgin.ssm.po.ItemsQueryVo; public interface ItemsService { /** * 通过ItemsMapperCustomer查询数据库 */ public ListfindItemsList(ItemsQueryVo itemsQueryVo)throws Exception; }
【2.2 ItemsServiceImpl.java】service实现接口
package cn.Higgin.ssm.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import cn.Higgin.ssm.mapper.ItemsMapperCustom; import cn.Higgin.ssm.po.ItemsCustom; import cn.Higgin.ssm.po.ItemsQueryVo; import cn.Higgin.ssm.service.ItemsService; public class ItemsServiceImpl implements ItemsService{ @Autowired private ItemsMapperCustom itemsMapperCustom; //通过ItemsMapperCustom查询数据库 public ListfindItemsList(ItemsQueryVo itemsQueryVo) throws Exception { return itemsMapperCustom.findItemsList(itemsQueryVo); } }
【2.3 applicationContext-service.xml】
在spring容器中配置service
<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 "> <bean id="itemService" class="cn.Higgin.ssm.service.impl.ItemsServiceImpl" /> beans>
【2.4 applicationContext-transaction.xml】事务控制
在applicationContext-transaction.xml中使用spring声明 事务控制方法。
<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 "> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> bean> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <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:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.Higgin.ssm.service.impl.*.*(..))"/> aop:config> beans>
【3.整合springmvc】
【3.1 springmvc.xml】
在springmvc中配置 处理映射器、适配器、视图解析器
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.Higgin.ssm.controller">context:component-scan>
<mvc:annotation-driven >mvc:annotation-driven>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
bean>
beans>
【3.2 在web.xml中】 在web.xml中配置前端控制器的代码
<servlet> <servlet-name>springmvcservlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class> <init-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:spring/springmvc.xmlparam-value> init-param> servlet> <servlet-mapping> <servlet-name>springmvcservlet-name> <url-pattern>*.actionurl-pattern> servlet-mapping>
【3.3 ItemsController.java】
编写Controller（即Handler）
package cn.Higgin.ssm.controller; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import cn.Higgin.ssm.po.ItemsCustom; import cn.Higgin.ssm.service.ItemsService; @Controller public class ItemsController { @Autowired private ItemsService itemsService; //商品查询 @RequestMapping("/queryItems") public ModelAndView queryItems() 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 ListitemsList=itemsService.findItemsList(null); //返回ModelAndView ModelAndView modelAndView=new ModelAndView(); //相当于request的setAttribute，在jsp页面中通过itemList来获取 modelAndView.addObject("itemsList",itemsList); //指定视图 modelAndView.setViewName("items/itemsList"); System.out.println("注解方式:ItemsComtroller......"); return modelAndView; } }
【4.前端jsp页面 itemsList.jsp】
位置：WEB-INF/jsp/items/itemsList.jsp
<%@ 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>查询商品列表title> head> <body> <form action="${pageContext.request.contextPath }/item/queryItem.action" method="post"> 查询条件： <table width="100%" border=1> <tr> <td><input type="submit" value="查询"/>td> tr> table> 商品列表： <table width="100%" border=1> <tr> <td>商品名称td> <td>商品价格td> <td>生产日期td> <td>商品描述td> <td>操作td> tr> <c:forEach items="${itemsList }" var="item"> <tr> <td>${item.name }td> <td>${item.price }td> <td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/>td> <td>${item.detail }td> <td><a href="${pageContext.request.contextPath }/item/editItem.action?id=${item.id}">修改a>td> tr> c:forEach> table> form> body> html>
【5. 加载spring容器】
将mapper、service、controller都加载到spring容器中。
建议使用通配符加载上边的配置文件。
在web.xml中，添加Spring容器监听器，加载spring容器。
【web.xml完整】
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>Spring_SpringMVC_MyBatisdisplay-name>
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>/WEB-INF/classes/spring/applicationContext-*.xmlparam-value>
context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<servlet>
<servlet-name>springmvcservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:spring/springmvc.xmlparam-value>
init-param>
servlet>
<servlet-mapping>
<servlet-name>springmvcservlet-name>
<url-pattern>*.actionurl-pattern>
servlet-mapping>
<welcome-file-list>
<welcome-file>index.jspwelcome-file>
welcome-file-list>
web-app>
【日志打印 log4j.properties】
# Global logging configuration\uff0c\u5efa\u8bae\u5f00\u53d1\u73af\u5883\u4e2d\u8981\u7528debug
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
【运行结果】
