MyBatis+SpringMVC+Spring整合

最近项目要用到MyBatis+SpringMVC+Spring，所以刚刚试着整合个测试项目，在此记录一下。如有疏漏之处，还请诸位前辈提点一二。

如果对SpringMVC还不太了解的朋友，可以看我之前的日志，这里是连接——http://blog.youkuaiyun.com/baimusensen/article/details/16120429

1.导jar包

注：因为能力有限，我这里的jar包有些jar包可能多余，不过都导进来肯定能跑起项目来

2.修改web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	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_2_5.xsd">
	<servlet>  
        <servlet-name>spring3mvc</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <!-- 如果不写这个init标签及其内容，那么SpringMVC的相关配置就要写在  
               与<servlet-name>中的内容一致的xml里 -->  
        <init-param>  
            <param-name>contextConfigLocation</param-name>  
            <!-- 这里是配置文件的路径 -->  
            <param-value>classpath*:/applicationContext.xml</param-value>  
        </init-param>  
        <load-on-startup>1</load-on-startup>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>spring3mvc</servlet-name>  
        <!-- url-pattern里的内容的意思代表：告诉程序什么样格式的url地址才能算是action，  
               并往action里走。对于我这里写的*.action的话，当我输入类似于findAll.action  
               这样的url时，才会让程序开始寻找相应的action -->  
        <url-pattern>*.action</url-pattern>  
    </servlet-mapping> 
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

3.添加applicationContext.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: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-2.5.xsd  
                        http://www.springframework.org/schema/context  
                        http://www.springframework.org/schema/context/spring-context-2.5.xsd  
                        http://www.springframework.org/schema/mvc  
                        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">  
                        
	<!-- 引入jdbc配置文件 -->  
    <context:property-placeholder location="classpath:dataSource.properties" />
    
    <!--创建jdbc数据源 -->  
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
        destroy-method="close">  
        <property name="driverClassName" value="${driver}" />  
        <property name="url" value="${url}" />  
        <property name="username" value="${username}" />  
        <property name="password" value="${password}" />  
    </bean>
    
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <bean id="transactionManager"  
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    </bean>
    
    <!-- 创建SqlSessionFactory，同时指定数据源 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
    	<property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="dataSource" ref="dataSource" />  
    </bean>
                        
    <!-- 扫描com这个包里的所有类，把里面配上相应注解的类全都放在容器中进行管理 -->  
    <context:component-scan base-package="com"/>  
    <!-- 添加注解驱动 -->  
    <mvc:annotation-driven />  
    <!-- 定义跳转的文件的前后缀 -->  
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个  
              可用的url地址 -->  
        <property name="prefix" value="/jsp/" />  
        <property name="suffix" value=".jsp" />  
    </bean>  
    
    <!-- Mapper接口所在包名，Spring会自动查找其下的Mapper -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="com.mapper"/>  
    </bean>
    
    <bean id="lalaMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
    	<property name="mapperInterface" value="com.mapper.ILalaMapper"/>
    	<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>
</beans>

4.添加mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTDConfig 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">

<!-- mybatis的数据类型和处理器等等...都可以实现接口重写，然后配置  -->
<configuration>
    <mappers>
    <!--映射文件-->
       <mapper resource="testMapper.xml"/>
    </mappers>
</configuration>

5.添加配置文件——dataSource.properties

driver=oracle.jdbc.driver.OracleDriver
url=jdbc\:oracle\:thin\:@Kewpie-HP\:1521\:KEWPIE
username=Kewpie
password=qyj890721

6.添加MyBatis映射文件——testMapper.xml

这个xml的名字随便起，只要最后与mybatis-config.xml里的文件名对应上就可以了

<?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.mapper.ILalaMapper">
	<select id="selectAllLala" resultMap="LalaMapper">
		select * from TEST13X11X19X1
	</select>
	
	<resultMap type="com.model.Lala" id="LalaMapper" autoMapping="true">
		<id property="id" column="t_id"/>
		<result property="name" column="t_name"/>
	</resultMap>
</mapper>

7.写JavaBean

public class Lala implements Serializable {

	private int id;
	private String name;
	
        //getter、setter省略
}

8.写接口——ILalaMapper

注：这里这个ILalaMapper就相当于其他地方的UserDao之类的，我这个名字是随便起的

package com.mapper;

import java.util.List;

import com.model.Lala;

public interface ILalaMapper {

	List<Lala> selectAllLala();
}

9.写service接口及其实现类

service接口

package com.service;

import java.util.List;

import com.model.Lala;

public interface ITestService {

	List<Lala> findAll();
}

实现类

package com.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.mapper.ILalaMapper;
import com.model.Lala;
import com.service.ITestService;

@Service("testService")
public class TestServiceImpl implements ITestService {
	
	@Resource
	private ILalaMapper lalaMapper;
	
	public List<Lala> findAll() {
		return this.lalaMapper.selectAllLala();
	}

}

10.写Controller层

package com.controller;

import java.util.List;

import javax.annotation.Resource;

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

import com.model.Lala;
import com.service.ITestService;

@Controller
@RequestMapping("testBase")
public class TestController {
	
	@Resource
	private ITestService testService;

	@RequestMapping("testA")
	public String test(){
		System.out.println("进Action了");
		List<Lala> list=this.testService.findAll();
		for(Lala l:list){
			System.out.println("id->"+l.getId()+",name->"+l.getName());
		}
		return "success";
	}
}

都写好之后，启动tomcat，在地址栏中输入地址——http://localhost:8080/myeclipse_mybatis_springmvc_test/testBase/testA.action

结果在控制台输入的内容如下

至此，MyBatis+SpringMVC+Spring最简单的整合项目完成