mybatis與spring整合（基於Annotation）

　本文主要介紹瞭如何將mybatis和spring整合在一起使用，本人使用的是mybatis3.05 + spring3.1.0M2 ，使用dbcp作爲數據庫連接池。

1.編寫數據訪問接口（UserDao.java）

package com.mybatis;

import org.apache.ibatis.annotations.Select;

public interface UserDao {
    @Select("select count(*) c from user;")
    public int countAll();
}

2.編寫服務層接口代碼（UserService.java）

package com.mybatis;

public interface UserService {
    public int countAll();
}

3.編寫服務層實現代碼（UserServiceImpl.java）

package com.mybatis;

public class UserServiceImpl implements UserService {
    private UserDao userDao;

    public UserDao getUserDao() {
        return userDao;
    }
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }
    
    public int countAll() {
        return this.userDao.countAll();
    }
}

4.編寫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="dataSource" ref="dataSource" />
    </bean>

    <bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <property name="mapperInterface" value="com.mybatis.UserDao" />
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>

    <bean id="userService" class="com.mybatis.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>

</beans>

5.編寫測試代碼

package com.mybatis;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;


public class UserServiceTest {
    
    @Test
    public void userServiceTest(){
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService userService = (UserService)context.getBean("userService");
        System.out.println(userService.countAll());
    }
}

附錄：需要導入的庫