spring声明式事务管理（基于TransactionProxyFactoryBean的方式）

以银行转账为例（本文只作为自己学习spring的备忘录，只对自己负责）

转账的dao层接口

[java]view
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packagecom.slowly.springtrancation01;

/**

*转账的dao层接口

*@authorhy

*

*/

publicinterfaceaccountDao{

/**

*

*@paramout转出账户

*@parammoney转出金额

*/

publicvoidoutMoney(Stringout,Doublemoney);

/**

*

*@paramin转入账户

*@parammoney转入金额

*/

publicvoidinMoney(Stringin,Doublemoney);

}

转账dao层接口实现类

[java]view
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packagecom.slowly.springtrancation01;

importorg.springframework.jdbc.core.support.JdbcDaoSupport;

publicclassaccountDaoImpextendsJdbcDaoSupportimplementsaccountDao{

@Override

publicvoidoutMoney(Stringout,Doublemoney){

Stringsql="updateaccountsetbalance=balance-?whereaccount_name=?";

this.getJdbcTemplate().update(sql,money,out);

}

@Override

publicvoidinMoney(Stringin,Doublemoney){

Stringsql="updateaccountsetbalance=balance+?whereaccount_name=?";

this.getJdbcTemplate().update(sql,money,in);

}

}

转账的业务逻辑层接口

[java]view
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packagecom.slowly.springtrancation01;

/*

*转账的业务层的接口

*/

publicinterfaceaccountService{

/**

*

*@paramout转出账户

*@paramin转入账户

*@parammoney转入的金额

*/

publicvoidtransfer(Stringout,Stringin,Doublemoney);

}

业务逻辑接口实现类

[java]view
 plaincopy

packagecom.slowly.springtrancation01;
importorg.springframework.transaction.TransactionStatus;
importorg.springframework.transaction.support.TransactionCallbackWithoutResult;
importorg.springframework.transaction.support.TransactionTemplate;
publicclassaccountServiceImpimplementsaccountService{
privateaccountDaoaccountDao;
publicvoidsetAccountDao(accountDaoaccountDao){
this.accountDao=accountDao;
}
@Override
publicvoidtransfer(Stringout,Stringin,Doublemoney){
accountDao.outMoney(out,money);
//inti=1/0;
accountDao.inMoney(in,money);
}
}

xml配置

<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
        
                
        
   <!-- 引入外部的文件 -->      
      <context:property-placeholder location="classpath:jdbc.properties"/>
        <!-- 配置c3p0的连接池 -->
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <property name="driverClass" value="${driverClass}"></property>
         <property name="jdbcUrl" value="${jdbcUrl}"></property>
         <property name="user" value="${user}"></property>
         <property name="password" value="${password}"></property>
        </bean>
        <!-- 配置业务层 -->
        <bean id="accountService" class="com.slowly.springtrancation02.accountServiceImp">
         <property name="accountDao" ref="accountDao"></property>
        </bean>
        
        <!-- 配置dao层 -->
        <bean id="accountDao" class="com.slowly.springtrancation02.accountDaoImp">
         <property name="dataSource" ref="dataSource"></property>
        </bean>
        
        <!-- 事务管理配置 -->
        <bean id="tranctionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <property name="dataSource" ref="dataSource"></property>
        </bean>
        
        <!-- 配置业务层的代理 -->
        <bean id="accountServiceProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
         <!-- 配置目标对象 -->
         <property name="target" ref="accountService"/>
         <!-- 配置事务管理器 -->
         <property name="transactionManager" ref="tranctionManager"/>
         
    <!-- <property name="proxyTargetClass" value="true"></property> -->
         <!-- 注入事务属性 -->
         <property name="transactionAttributes">
          <props>
           <prop key="transfer">PROPAGATION_REQUIRED</prop>
          </props>
         </property>
         
        </bean>
       <!--   <bean id="myProxy" parent="accountServiceProxy">
      <property name="target" ref="accountService"/>
   </bean> -->


</beans>

测试

package com.slowly.springtrancation02;

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

public class Test {

 public static void main(String[] args) {
  ApplicationContext apt = new ClassPathXmlApplicationContext("applicationContext2.xml");

  accountService accountService = (com.slowly.springtrancation02.accountService) apt.getBean("accountServiceProxy");
  accountService.transfer("乙", "甲", 600.00);

 }

}

测试用的和上文一样的数据库表