Spring之mybatis集成

永夜海

　　背景：
　　基于mybatis的3.1.1和Spring的3.1.0.RELEASE做集成操作，不采用事务控制。
　　依赖jar：

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.25</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.1.0.RELEASE</version>
</dependency>
　　web.xml中感知到spring的存在：

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-*.xml</param-value>
</context-param>
　　spring-db.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:task="http://www.springframework.org/schema/task" 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:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xmlns:beans="http://www.springframework.org/schema/beans"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/task   
http://www.springframework.org/schema/task/spring-task-3.1.xsd">
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://host:3005/db" />
<property name="username" value="username" />
<property name="password" value="password" />
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="/WEB-INF/mybatis-config.xml"/>
<property name="mapperLocations"
value="classpath*:com/xx/dao/*.xml" />
<property name="typeAliasesPackage" value="com.xx.vo" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.xx.dao" />
</bean>
</beans>
　　上述指定了dataSource，同时sqlSessionFactory中引入了dataSource，configLocation中的配置如下：

<?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>
<typeAliases>
<typeAlias alias="demo_t" type="com.xx.vo.Demo" />
</typeAliases>
</configuration>
　　mapperLocations（DemoMapper.xml）配置如下:

<?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.xx.dao.DemoDao">
<cache />
<select id="getDemo" parameterType="string" resultType="Demo" >
select id
from demo_t where id = #{id}
</select>
</mapper>
　　VO和Dao如下：

public class Demo implements Serializable {
private static final long serialVersionUID = -7271550743849359837L;
private String id;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}

public interface DemoDao {
Demo getDemo(String id);
}
　　此时配置完成只需要调用即可：

this.demoDao.getDemo(id);