浅谈MyBatis 之 集成SpringMVC（六）
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MyBatis
集成springMVC：
mybatis-3.2.2 + spring-4.0.2.RELEASE+springMVC-4.0.2.RELEASE.
如果对集成spring还不是很熟悉的可以去看前文，因为此篇文章是在前文基础上有所增加的。
浅谈MyBatis 之 整合spring（五）
通过 使用 查询部门及以下的员工来展示springMVC+mybatis的使用。
由于使用的是maven工程，所以首先要建立一个maven web工程。
数据库
web.xml
项目部署文件：web.xml
<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name> <!-- spring 配置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springWithMVC.xml</param-value> </context-param> <!-- 配置上下文监听 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Spring MVC配置 DispatcherServlet springMVC中主控制器 又叫前端控制器 --> <servlet> <servlet-name>springMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 配置 springMVC的配置文件的地方 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springMVC.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 编码过滤器 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <async-supported>true</async-supported> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 对静态资源的默认配置 --> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.jpg</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.css</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>POJO类
Dept.java
package com.wm.mybatis.entity;import java.util.List;public class Dept { private Integer id ; private String name ; private String address ; private List<Employee> employees ; //..... //.....setter and getter.....}映射文件
DeptWithSpring.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.wm.mybatis.dao.IDeptWithSpringMVCMapperDao"> <resultMap type="Dept" id="resultDept"> <result property="id" column="d_id" /> <result property="name" column="d_name" /> <result property="address" column="d_address" /> <!-- 引用 一个 已存在的 resultMap Employee最基本的结果集映射 --> <collection property="employees" ofType="Employee" resultMap="com.wm.mybatis.dao.IEmployeeMapperDao.basicEmployee" /> </resultMap> <select id="getDept" parameterType="map" resultMap="resultDept"> select * from base_55demo.demo_mawei_dept d, base_55demo.demo_mawei_employee e where d.d_id = e.d_id <if test="id != null"> and d.d_id = #{id} </if> <if test="name != null"> and d.d_name = #{name} </if> </select></mapper>方法：getDept —> 就是要实现的方法。
Employee最基本的结果集映射在 Employee.xml里：
<!-- 最基本的Employee结果集 --> <resultMap type="Employee" id="basicEmployee"> <id property="id" column="e_id"/> <result property="name" column="e_name"/> <result property="address" column="e_address"/> </resultMap>DAO层
IDeptWithSpringMVCMapperDao.java
package com.wm.mybatis.dao;import java.util.Map;import com.wm.mybatis.entity.Dept;public interface IDeptWithSpringMVCMapperDao { public Dept getDept(Map map);}service层
接口：IDeptWithSpringMVCMapperSV .java
package com.wm.mybatis.service;import java.util.Map;import org.springframework.stereotype.Service;import com.wm.mybatis.entity.Dept;@Servicepublic interface IDeptWithSpringMVCMapperSV { public Dept getDept(Map map);}实现类：DeptWithSpringMVCMapperSVImpl.java
package com.wm.mybatis.service;import java.util.Map;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.wm.mybatis.dao.IDeptWithSpringMVCMapperDao;import com.wm.mybatis.entity.Dept;@Servicepublic class DeptWithSpringMVCMapperSVImpl implements IDeptWithSpringMVCMapperSV{ @Autowired private IDeptWithSpringMVCMapperDao dao ; @Override public Dept getDept(Map map) { return this.dao.getDept(map); }}controller
控制层类：DeptController.java
package com.wm.mybatis.controller;import java.util.HashMap;import java.util.Map;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.RequestMethod;import org.springframework.web.servlet.ModelAndView;import com.wm.mybatis.entity.Dept;import com.wm.mybatis.service.IDeptWithSpringMVCMapperSV;@Controllerpublic class DeptController { @Autowired private IDeptWithSpringMVCMapperSV sv ; @RequestMapping(method=RequestMethod.POST,value="/getDept") public ModelAndView getDept(String id , String name){ Map<String, Object> map = new HashMap<String, Object>(); if (!"".equals(id)) { map.put("id", Integer.valueOf(id)) ; } if (!"".equals(name)) { map.put("name", name) ; } Dept dept = this.sv.getDept(map); return new ModelAndView("index","dept",dept); } @RequestMapping(method=RequestMethod.GET,value="/index") public ModelAndView get(){ return new ModelAndView("index"); }}spring配置文件
springWithMVC.xml
<?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-4.0.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-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd "> <mvc:annotation-driven /> <!-- 自动扫描 注解 --> <context:component-scan base-package="com.wm.mybatis.dao" /> <context:component-scan base-package="com.wm.mybatis.service" /> <context:component-scan base-package="com.wm.mybatis.controller" /> <!-- 导入外部配置文件 --> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 1、配置数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driverClass}" /> <property name="jdbcUrl" value="${jdbc.url}" /> <property name="user" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> </bean> <!-- 2、配置 SqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 配置 数据源 --> <property name="dataSource" ref="dataSource" /> <!-- 配置 mybatis 主配置文件位置 --> <property name="configLocation" value="classpath:configure.xml" /> <!-- 配置 映射文件位置 如果mybatis的主配置文件中配置了，则可以不用配置 <property name="mapperLocations" value="classpath:mapper/*.xml" /> --> </bean> <!-- 3、事务管理 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- DAO层 --> <bean id="dao" class="org.mybatis.spring.mapper.MapperFactoryBean"> <!-- 配置 实现 的 dao层 --> <property name="mapperInterface" value="com.wm.mybatis.dao.IDeptWithSpringMVCMapperDao" /> <!-- 配置的 sqlSessionFactory --> <property name="sqlSessionFactory" ref="sqlSessionFactory" /> </bean> <!-- service <bean id="sv" class="com.wm.mybatis.service.DeptWithSpringMVCMapperSVImpl"> <property name="dao" ref="dao" /> </bean> --></beans> 使用 MapperFactoryBean，可以关联 sqlSessionFactory 和 dao层的接口，相当于原先的dao层实现类。我们就不用自己去实现 dao层，且不用自己手动式的获取session 和 关闭 session。
mybatis主配置文件
configure.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> <typeAlias alias="Dept" type="com.wm.mybatis.entity.Dept"/> <typeAlias alias="Employee" type="com.wm.mybatis.entity.Employee"/> </typeAliases> <!-- 配置的映射文件 --> <mappers> <mapper resource="mapper/DeptWithSpringMVC.xml"/> <mapper resource="mapper/Employee.xml"/> </mappers></configuration>SpringMVC的配置文件
springMVC.xml：配置一下视图解析器，及静态资源访问
<?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:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 静态资源配置 --> <mvc:resources location="/resources/" mapping="/resources/**"/> <mvc:default-servlet-handler/> <!-- 视图解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/" /> <property name="suffix" value=".jsp" /> </bean></beans> 最主要的配置已经讲 完了，下面就是写的一个简单的页面来展示效果的。
页面
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><!DOCTYPE HTML><html> <head> <title>首页</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <link rel="stylesheet" type="text/css" href="resources/css/index.css"/> </head> <body> <div class="main"> <p class="title">DEPT-EMPLOYEE</p> <div class="part1"> <form action="getDept" method="post"> <p class="pt">部门</p> <div class="row"> <label>部门编号：</label> <input type="text" name="id" required="required" value="${dept.id }" /> </div> <div class="row"> <label>部门名：</label> <input type="text" name="name" /> </div> <div class="row"> <input type="submit" value="查询" class="btnSubmit" /> </div> </form> </div> <hr class="split" /> <div class="part2"> <p class="pt">部门信息</p> <div> <ul class="erow"> <li>部门号</li> <li>部门名</li> <li>部门地址</li> </ul> <ul class="erow"> <li>${dept.id }</li> <li>${dept.name }</li> <li>${dept.address }</li> </ul> </div> <p class="pt">员工</p> <div> <ul class="erow"> <li>员工号</li> <li>员工姓名</li> <li>员工家庭地址</li> </ul> <c:forEach var="emp" items="${ dept.employees}"> <ul class="erow"> <li>${emp.id }</li> <li>${emp.name }</li> <li>${emp.address }</li> </ul> </c:forEach> </div> </div> </div></body></html>index.css
*{ margin: 0; padding: 0; background-color: beige;}.title{ font-family:'华文行楷'; font-size: 28px; margin: 1em auto; color: blue; text-align: center;}.main{ margin:2em auto; text-align:center; width: 40em; height: 30em; color: hotpink; border: 1px solid red; border-radius: 6px;}.split{ clear: both; border: 2px solid yellow; border-style: inset ; border-radius: 4px;}.pt{ text-align: left; margin:1em; color: aqua; font-size: 20px;}.part1{ height: 6em; clear: both;}.row{ margin:1em; float: left;}.part2{ height:16em; clear:both; margin-top: .4em; overflow: auto;}.erow{ clear: both; display: block; margin: 1em; padding:1em;}li{ list-style: none; width:6em; float: left; margin-left: 1em;}input{ width: 10em; height: 1.8em; padding: .3em;}.btnSubmit{ width: 4em; height: 2.5em; padding: .5em; color: blue;}效果展示
首页：
查询出来后的展现效果：
至此，mybatis整合springMVC+spring已完成，其中核心部分就是 使用接口方式来实现的DAO层的实现。
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