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spring+mybatis整合之声明式事务配置.md

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spring+mybatis整合之声明式事务配置

一、db.properties

jdbc.JdbcUrl=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=UTF-8
jdbc.JdbcDriver=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=root

二、在resource资源文件夹下新建XML Configuration File->Spring Config、取名spring.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"
       xmlns:context="http://www.springframework.org/schema/context" 
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans.xsd 
           http://www.springframework.org/schema/context 
           http://www.springframework.org/schema/context/spring-context.xsd 
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx.xsd 
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop.xsd">

    <context:component-scan base-package="com.edu"/>

    <context:property-placeholder location="db.properties"/>
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${jdbc.JdbcUrl}"/>
        <property name="driverClass" value="${jdbc.JdbcDriver}"/>
        <property name="user" value="${jdbc.user}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!-- sqlsession工厂 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="typeAliasesPackage" value="com.edu.bean"/>
        <property name="mapperLocations" value="classpath:mapper/*Mapper.xml"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
     <!--sqlsesson连接,此类没有 -->
    <!--<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">-->
        <!--<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/>-->
    <!--</bean>-->

     <!--维护所有Mapper-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.edu.mapper"></property>
    </bean>


    <!-- 事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 事务属性 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="list*" read-only="true"/>
            <tx:method name="select*" read-only="true"/>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
    <!--  切面  -->
    <aop:config>
        <aop:pointcut expression="execution(* com..service..*.*(..))" id="txPointcut"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
    </aop:config>
</beans>

三、详细代码实现

  • 业务层接口：

    package com.edu.service;

public interface UserService {

    void run();
}

  • 业务层实现：

    package com.edu.service.impl;

import com.edu.bean.User;
import com.edu.mapper.UserMapper;
import com.edu.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public void run() {//使用切面：当此方法有一条语句抛出异常时全都不能执行
        User user = new User();
        user.setUserName("小明100");
        user.setEmail("sdfsf@163.com");
        userMapper.insertSelective(user);

        User user2 = new User();
        user2.setId(56);//已存在的id
        user2.setUserName("小红300");
        userMapper.insertSelective(user2);
    }
}

四、测试

package com.edu;

import com.edu.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class) //使用junit4进行测试
@ContextConfiguration(locations={"classpath:spring.xml"})
public class TestUser {

    @Autowired
    private UserService userService;
    @Test
    public void testAop(){
        userService.run();

    }
}