mybatis和spring整合——常用的两种
网上转载实例：本文主要介绍了如何将mybatis和spring整合在一起使用，本人使用的是mybatis3.05 + spring3.1.0M2 ，使用dbcp作为数据库连接池。
1.编写数据访问接口（UserDao.java）
package com.mybatis;
publicinterface UserDao {
publicint countAll();
}
2.编写数据访问接口映射文件（UserDaoMapper.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.mybatis.UserDao"><select id="countAll" resultType="int">
select count(*) c from user;
</select></mapper>
3.编写mybatis配置文件（MyBatis-Configuration.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><mappers><mapper resource="com/mybatis/UserDaoMapper.xml"/></mappers></configuration>
4.编写服务层接口（UserService.java）
package com.mybatis;
publicinterface UserService {
publicint countAll();
}
5.编写服务层实现代码（UserServiceImpl.java）
package com.mybatis;
publicclass UserServiceImpl implements UserService {
private UserDao userDao;
public UserDao getUserDao() {
return userDao;
}
publicvoid setUserDao(UserDao userDao) {
this.userDao = userDao;
}
publicint countAll() {
returnthis.userDao.countAll();
}
}
6.编写spring配置文件（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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"><property name="driverClassName" value="com.mysql.jdbc.Driver"></property><property name="url" value="jdbc:mysql://localhost:3306/hlp?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull"></property><property name="username" value="root"></property><property name="password" value="1234"></property><property name="maxActive" value="100"></property><property name="maxIdle" value="30"></property><property name="maxWait" value="500"></property><property name="defaultAutoCommit" value="true"></property></bean><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="configLocation" value="classpath:MyBatis-Configuration.xml"></property><property name="dataSource" ref="dataSource"/></bean><bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean"><property name="mapperInterface" value="com.mybatis.UserDao"></property><property name="sqlSessionFactory" ref="sqlSessionFactory"></property></bean><bean id="userService" class="com.mybatis.UserServiceImpl"><property name="userDao" ref="userDao"></property></bean></beans>
7.测试代码（UserServiceTest.java）
package com.mybatis;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
publicclass UserServiceTest {
@Test
publicvoid userServiceTest(){
ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml");
UserService userService = (UserService)context.getBean("userService");
System.out.println(userService.countAll());
}
}
附录：需要导入的库
另一种：
applicationContext.xml
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[*]<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
[*] <property name="dataSource" ref="dataSource" />
[*] <property name="mapperLocations" value="classpath*:maps/**/*.xml" />
[*]
[*] </bean>
[*]
[*]<bean id="baseDao" class="com.dao.AbstractDao" abstract="true">
[*] <property name="sqlSessionFactory" ref="sqlSessionFactory" />
[*]</bean>
AbstractDao
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[*]package com.common.dao;
[*]
[*]import java.io.Serializable;
[*]
[*]import org.mybatis.spring.support.SqlSessionDaoSupport;
[*]import org.springframework.beans.factory.annotation.Autowired;
[*]
[*]import common.utils.ComLogger;
[*]
[*]/**
[*] * 抽象Dao
[*] */
[*]public class AbstractDao extends SqlSessionDaoSupport implements Serializable {
[*]
[*] /**
[*] *
[*] */
[*] private static final long serialVersionUID = 4349985369282562159L;
[*]
[*] /**
[*] *
[*] */
[*] @Autowired
[*] protected transient ComLogger logger;
[*]
[*]}
具体实例dao
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[*]/**
[*] *
[*] *
[*] * @author
[*] *
[*] */
[*]@Component
[*]
[*]public class Somedao extends AbstractDao {
[*]
[*] /**
[*] * serialVersionUID
[*] */
[*] private static final long serialVersionUID = -1524915644527798140L;
[*] /**
[*] *
[*] *
[*] * @param mp
[*] * @return list
[*] */
[*] public List<?> selectTtproperty(final Map<String, Object> mp) {
[*] return getSqlSession().selectList("Some.countAll", mp);
[*] }
[*]
[*]}
数据访问接口映射文件
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[*]<mapper namespace="Some">
[*] <select id="countAll" resultType="int">
[*] select count(*) c from user;
[*] </select>
[*]</mapper>
或者用resultMap
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