SpringMVC学习（三）整合SpringMVC和MyBatis
2016-07-21 13:46
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工程结构
导入jar包
配置文件
applicationContext-dao.xml---配置数据源、SqlSessionFactory、mapper扫描器
applicationContext-service.xml---配置service接口
applicationContext-transaction.xml--事务管理
sprintmvc.xml---springmvc的配置，配置处理器映射器、适配器、视图解析器
SqlMapConfig.xml---mybatis的配置文件，配置别名、settings、mapper
applicationContext-dao.xml
<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"/>
<!-- mybatis配置文件 -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"/>
</bean>
<!--
MapperScannerConfigurer：mapper的扫描器，将包下边的mapper接口自动创建代理对象，
自动创建到spring容器中，bean的id是mapper的类名（首字母小写）
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置扫描包的路径
如果要扫描多个包，中间使用半角逗号分隔
要求mapper.xml和mapper.java同名且在同一个目录
-->
<property name="basePackage" value="com.cxz.ssm.mapper"/>
<!-- 使用sqlSessionFactoryBeanName -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
</beans>
applicationContext-transation.xml
<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 "> <!-- 使用声明式事务配置，可以有效规范代码 --> <!-- 事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="insert*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> <tx:method name="select*" propagation="SUPPORTS" read-only="true"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> </tx:attributes> </tx:advice> <!-- aop --> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.cxz.ssm.service.impl.*.*(..))"/> </aop:config> </beans>
applicationContext-service.xml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 "> <!-- 商品管理 的service --> <bean id="itemsService" class="com.cxz.ssm.service.impl.ItemsServiceImpl"/> </beans>
配置web.xml
<!-- 配置spring容器监听器 --> <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> <!-- 前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 加载springmvc配置 --> <init-param> <param-name>contextConfigLocation</param-name> <!-- 配置文件的地址 如果不配置contextConfigLocation， 默认查找的配置文件名称classpath下的：servlet名称+"-serlvet.xml"即：springmvc-serlvet.xml --> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <!-- 可以配置/ ，此工程 所有请求全部由springmvc解析，此种方式可以实现 RESTful方式，需要特殊处理对静态文件的解析不能由springmvc解析 可以配置*.do或*.action，所有请求的url扩展名为.do或.action由springmvc解析，此种方法常用 不可以/*，如果配置/*，返回jsp也由springmvc解析，这是不对的。 --> <url-pattern>*.action</url-pattern> </servlet-mapping>
配置springmvc.xml
<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 "> <!-- 使用spring组件扫描 --> <context:component-scan base-package="com.cxz.ssm.controller" /> <!-- 注解处理器映射器 --> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean> <!-- 注解适配器 --> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> </bean> <!-- 配置视图解析器 要求将jstl的包加到classpath --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
需求
查询商品列表
mapper
功能描述：根据条件查询商品信息，返回商品列表。
一般情况下针对查询mapper需要自定义mapper。
首先针对单表进行逆向工程，生成代码。
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="com.cxz.ssm.mapper.ItemsMapperCustom">
<!-- 商品查询的sql片段
建议是以单表为单位定义查询条件
建议将常用的查询条件都写出来
-->
<sql id="query_items_where">
<if test="itemsCustom!=null">
<if test="itemsCustom.name!=null and itemsCustom.name!=''">
and name like '%${itemsCustom.name}%'
</if>
<if test="itemsCustom.id!=null">
and id = #{itemsCustom.id}
</if>
</if>
</sql>
<!-- 商品查询
parameterType：输入 查询条件
-->
<select id="findItemsList" parameterType="com.cxz.ssm.po.ItemsQueryVo"
resultType="com.cxz.ssm.po.ItemsCustom">
SELECT * FROM items
<where>
<include refid="query_items_where"/>
</where>
</select>
</mapper>
包装类
ItemsQueryVo.java
package com.cxz.ssm.po;
public class ItemsQueryVo {
//商品信息
private ItemsCustom itemsCustom;
public ItemsCustom getItemsCustom() {
return itemsCustom;
}
public void setItemsCustom(ItemsCustom itemsCustom) {
this.itemsCustom = itemsCustom;
}
}
mapper.java
package com.cxz.ssm.mapper;
import java.util.List;
import com.cxz.ssm.po.ItemsCustom;
import com.cxz.ssm.po.ItemsQueryVo;
public interface ItemsMapperCustom {
// 商品查询列表
public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo)
throws Exception;
}
controller
package com.cxz.ssm.controller;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
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 com.cxz.ssm.po.ItemsCustom;
import com.cxz.ssm.service.ItemsService;
@Controller
public class ItemsController {
//注入Service
@Autowired
private ItemsService itemsService;
@RequestMapping("/queryItems")
public ModelAndView queryItems(HttpServletRequest request) throws Exception {
System.out.println(request.getParameter("id"));
//调用service查询商品列表
List<ItemsCustom> itemsList = itemsService.findItemsList(null);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("itemsList", itemsList);
// 指定逻辑视图名
modelAndView.setViewName("itemsList");
return modelAndView;
}
}
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 }/items/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 }/items/editItems.action?id=${item.id}">修改</a></td>
</tr>
</c:forEach>
</table>
</form>
</body>
</html>
tomcat运行
http://localhost:8080/springmvcmybatis/queryItems.action
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