事务管理_xml配置aop事务

举例a向b转账，通过money总量来查看在转账出现异常时数据能否保持一致性。

主体结构	jar包

db.properties:

jdbc.jdbcUrl=jdbc:mysql:///spring_day03
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=root

applicationContext.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xmlns:aop="http://www.springframework.org/schema/aop" 
       xmlns="http://www.springframework.org/schema/beans" 
       xmlns:context="http://www.springframework.org/schema/context" 
       xmlns:tx="http://www.springframework.org/schema/tx" 
       xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">
    <context:property-placeholder location="db.properties"/>
    
    <!-- 配置DataSource -->
    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>       
    
    <!-- 配置TransactionManager -->
    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
       
    <!-- 配置AccountDao -->
    <bean name="accountDao" class="com.kong.dao.AccountDaoImpl">
        <property name="dataSource" ref="dataSource"></property>
    </bean>   
    
    <!-- 配置AccountService -->
    <bean name="accountService" class="com.kong.service.AccountServiceImpl">
    <property name="accountDao" ref="accountDao"></property>
    </bean>
    
    <!-- 配置Transaction通知 -->
    <tx:advice transaction-manager="transactionManager" id="myAdvice">
        <tx:attributes>
            <tx:method name="transfer" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"/>
        </tx:attributes>
    </tx:advice>
    
    <!-- transaction、aspect织入 -->
    <aop:config>
        <aop:pointcut expression="execution(* com.kong.service.*ServiceImpl.*(..))" id="myPointCut"/>
        <aop:advisor advice-ref="myAdvice" pointcut-ref="myPointCut"/>
    </aop:config>
    
       
       
</beans>

AccountDaoImpl.java：

package com.kong.dao;

import org.springframework.jdbc.core.support.JdbcDaoSupport;

public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao {

	@Override
	public void addMoney(Integer id, double money) {
		String sql = "update t_account set money = money + ? where id = ?";
		super.getJdbcTemplate().update(sql,money,id);

	}

	@Override
	public void subMoney(Integer id, double money) {
		String sql = "update t_account set money = money - ? where id = ?";
		super.getJdbcTemplate().update(sql,money,id);

	}

}

AccountServiceImpl.java：

package com.kong.service;

import com.kong.dao.AccountDao;

public class AccountServiceImpl implements AccountService {
	
	private AccountDao accountDao;
	
	public void setAccountDao(AccountDao accountDao) {
		this.accountDao = accountDao;
	}

	@Override
	public void transfer(Integer from, Integer to, double money) {
		accountDao.subMoney(from, money);
		System.out.println(1/0);//插入出错代码
		accountDao.addMoney(to, money);
	}

}

Mytest.java：

package com.kong.test;

import javax.annotation.Resource;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.kong.service.AccountService;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class MyTest {
	@Resource(name = "accountService")
	private AccountService accountService;
	@Test
	//id=1向id=2转账100
	public void test_01() {
		accountService.transfer(1, 2, 100d);
	}

}　

原表数据：

 若未配置织入（line 41~44@applicationContext.xml)，则在出现异常时运行结果为：

若配置了织入，则在出现异常时程序的运行结果为：

---

在引入spring 事务管理后，可以保持数据的一致性