继前一篇的例子http://www.cnblogs.com/EasonJim/p/7052388.html，已经集成了Spring框架，现在将改造成Spring MVC的项目，并实现如下功能：
1、不用每次都手动指定具体的XML文件，而是采用通配符自动查找XML文件，也是Mapping文件。
2、不用每次都手动指定实体文件，即POJOs，而是采用包名的形式指定最上层的包。
此次集成Spring MVC框架，主要需要用到以下文件：
1、web.xml：用于关联Spring的Servlet映射。
2、spring-mvc-servlet.xml：用于配置Spring的Servlet映射。
3、beans.xml：用于配置MyBatis与Spring结合的Beans映射。其中包括了数据库的具体连接，实体的映射包名查找，Mapping的XML文件的通配符查找等。
下面是具体的集成步骤：
1、项目整体结构：
2、POM依赖配置：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.jsoft.testmybatis</groupId>
<artifactId>test1</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>test1 Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency> <!-- Servlet Library -->
<!-- http://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency> <!-- JSTL -->
<!-- https://mvnrepository.com/artifact/org.apache.taglibs/taglibs-standard-impl -->
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-impl</artifactId>
<version>1.2.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.taglibs/taglibs-standard-jstlel -->
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-jstlel</artifactId>
<version>1.2.5</version>
</dependency> <!-- Spring Core -->
<!-- http://mvnrepository.com/artifact/org.springframework/spring-core -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.4.RELEASE</version>
</dependency> <!-- Spring Web -->
<!-- http://mvnrepository.com/artifact/org.springframework/spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.1.4.RELEASE</version>
</dependency> <!-- Spring Web MVC -->
<!-- http://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.4.RELEASE</version>
</dependency> <!-- Spring Context -->
<!-- http://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.4.RELEASE</version>
</dependency> <!-- Spring JDBC -->
<!-- http://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.4.RELEASE</version>
</dependency> <!-- mysql-connector-java -->
<!-- http://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency> <!-- mybatis -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.4</version>
</dependency> <!-- mybatis-spring -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency> <!-- commons-dbcp -->
<!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency> </dependencies>
<build>
<finalName>test1</finalName> <plugins>
<!-- Config: Maven Tomcat Plugin -->
<!-- http://mvnrepository.com/artifact/org.apache.tomcat.maven/tomcat7-maven-plugin -->
<!-- http://tomcat.apache.org/maven-plugin-2.0/tomcat7-maven-plugin/plugin-info.html -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<!-- Config: contextPath and Port (Default:8080) -->
<!-- <configuration>
<path>/</path>
<port>8899</port>
</configuration> -->
</plugin>
<!-- Config: Maven Jetty Plugin -->
<!-- http://mvnrepository.com/artifact/org.mortbay.jetty/jetty-maven-plugin -->
<!-- http://www.eclipse.org/jetty/documentation/current/jetty-maven-plugin.html -->
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.4.3.v20170317</version>
<!-- Config: contextPath and Port (Default:8080) -->
<!-- <configuration>
<httpConnector>
<port>8899</port>
</httpConnector>
<webAppConfig>
<contextPath>/</contextPath>
</webAppConfig>
</configuration> -->
</plugin>
</plugins> </build>
</project>
3、web.xml配置：
<web-app id="WebApp_ID" 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>Archetype Created Web Application</display-name> <servlet>
<servlet-name>spring-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 默认：[servlet-name]-servlet.xml -->
<!-- 通过初始化参数，指定xml文件的位置 -->
<!-- <init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/helloworld-context.xml</param-value>
</init-param> -->
<load-on-startup>1</load-on-startup>
</servlet> <servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> <!-- 添加其它xml配置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:beans.xml</param-value><!-- 映射beans，里面配置数据库连接信息以及MyBatis的映射文件 -->
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> </web-app>
4、spring-mvc-servlet.xml配置：
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="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.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <context:component-scan base-package="com.jsoft.testmybatis.controller" /> <context:annotation-config /> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean> </beans>
这里是常规的Web映射，没有相关的MyBatis配置。
5、beans.xml配置：
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd"> <!--采用DBCP连接池 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://127.0.0.1:3306/Test?serverTimezone=UTC" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean> <!-- 事务 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean> <!-- 新建SessionFactonry -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--dataSource属性指定要用到的连接池 -->
<property name="dataSource" ref="dataSource" />
<!--configLocation属性指定mybatis的核心配置文件 -->
<property name="configLocation" value="classpath:Configuration.xml" />
<!-- 所有配置的mapper文件 -->
<property name="mapperLocations" value="classpath:com/jsoft/testmybatis/models/*.xml" />
<!-- 所有的实体 -->
<property name="typeAliasesPackage" value="com.jsoft.testmybatis.models"/>
</bean> <!-- 映射接口文件 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.jsoft.testmybatis.inter" />
</bean> </beans>
这里关联了MyBatis，并且通过<property name="mapperLocations" value="classpath:com/jsoft/testmybatis/models/*.xml" />实现通配符的查找，不用手动具体指定每一个XML文件，<property name="typeAliasesPackage" value="com.jsoft.testmybatis.models"/>这里通过顶层包名去查找下面的POJOs。
6、由上一节文章中配置的Configuration.xml文件，是具体指定了POJOs和XML文件的，但是这里就全部取消了，直接为空，留下日后需要配置MyBatis其它属性。
<?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> </configuration>
7、UserController.java，就是单纯的
package com.jsoft.testmybatis.controller; import java.util.List; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; 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.jsoft.testmybatis.inter.IUserOperation;
import com.jsoft.testmybatis.models.Article; @Controller
@RequestMapping("/article")
public class UserController {
@Autowired
IUserOperation userMapper; @RequestMapping("/list")
public ModelAndView listall(HttpServletRequest request,HttpServletResponse response){
List<Article> articles=userMapper.getUserArticles(1);
ModelAndView mav=new ModelAndView("/article/list");
mav.addObject("articles",articles);
return mav;
}
}
这里需要说明的就是基于Spring的@Autowired注解，其实是beans.xml中配置的<property name="basePackage" value="com.jsoft.testmybatis.inter" />的作用，通过顶层包进行查找接口文件，然后标有@Autowired注解的属性会自动查找并装配。
8、list.jsp，Web页面，通过JSTL标签进行数据输出：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" isELIgnored="false"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!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>Insert title here</title>
</head>
<body>
<c:forEach items="${articles}" var="item">
${item.id }--${item.title }--${item.content }<br />
</c:forEach>
</body>
</html>
9、最后通过POM内置的Tomcat组件运行，命令如下：
mvn tomcat7:run
测试数据结果：
测试工程：https://github.com/easonjim/5_java_example/tree/master/mybatis/test6
参考：