• mybatis与spring整合(基于配置文件)(转)


    mybatis与spring整合(基于配置文件)

     

      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

     

     

     

     

     

     

    作者:红枫落叶 
    出处:http://www.cnblogs.com/wushiqi54719880/ 
    关于作者:专注于Java企业运用、海量数据处理、hadoop、数字图像处理等。
    本文版权归作者所有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接,如有问题,可以通过wushiqi54719880@126.com  联系我,非常感谢。

     
     
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  • 原文地址:https://www.cnblogs.com/mingf123/p/3760064.html
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