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&amp;characterEncoding=UTF-8&amp;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

 

<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

 

 

 

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

/**
 *
 *
 * @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

 

<mapper namespace="Some">
    <select id="countAll" resultType="int">
        select count(*) c from user;
    </select>
</mapper>

或者用resultMap