Spring编程式事务管理（xml注入）

利用Spring,模拟银行转账进行编程式事务管理。

需要的jar包如下图



，对应的jar包在我的资源页有下载。项目名称叫spring-transaction

创建数据库和数据表，内容如下：



其中name：假定为用户的银行账号

money:为账号余额，初始化为1000

项目结构



编写事务管理

编写Dao与DaoImpl

AccountDao.java

package com.phy.dao;
/**
* 转账案例的持久层接口
* @author zongjb
*
*/
public interface AccountDao {
/**
*
* @param out :为转出账户
* @param money :为转出金额
*/
void out(String out,double money);
/**
*
* @param in :转入账户
* @param money :转入金额
*/
void in(String in,double money);
}

AccountDaoImpl.java

package com.phy.daoImpl;

import com.phy.dao.AccountDao;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
/**
*
* @author zongjb
*
*/
public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao {

@Override
public void out(String out, double money) {
String sql = "update account set money = money - ? where name = ?";
this.getJdbcTemplate().update(sql, money, out);

}

@Override
public void in(String in, double money) {
String sql = "update account set money = money + ? where name = ?";
this.getJdbcTemplate().update(sql, money,in);
}

}

3.2 Service与ServiceImpl
AccountService.java

package com.phy.serivce;

/**
* 转账案例的业务处理层接口
* @author zongjb
*
*/
public interface AccountService {
/**
*
* @param out :转出账户
* @param in  :转入账户
* @param money :转出(入）金额
*/
void transfers(String out,String in,double money);
}

AccountServiceImpl.java

package com.phy.serivceImpl;

import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;

import com.phy.dao.AccountDao;
import com.phy.serivce.AccountService;

/**
*
* @author zongjb
*
*/
public class AccountServiceImpl implements AccountService {
private AccountDao accountDao;
private TransactionTemplate transactionTemplate;

public void setTransactionTemplate(TransactionTemplate transactionTemplate) {
this.transactionTemplate = transactionTemplate;
}
public void setAccountDao(AccountDao accountDao) {
this.accountDao = accountDao;
}
@Override
public void transfers(final String out, final String in,final  double money) {
ransactionTemplate.execute(new TransactionCallbackWithoutResult() {
@Override
protected void doInTransactionWithoutResult(TransactionStatus arg0) {
accountDao.out(out, money);
accountDao.in(in, money);
}
});
}

}

3.3 配置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"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!--（1）扫描存放在classpa
4000
th下，名为jdbc.properties的文件-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- (2) 配置c3p0连接池，取名为dataSource -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

<property name="driverClass" value="${jdbc.driverClassName}"/>

<property name="jdbcUrl" value="${jdbc.url}"/>

<property name="user" value="${jdbc.username}"/>

<property name="password" value="${jdbc.password}"/>
</bean>

<bean name="accountService" class="com.phy.serviceImpl.AccountServiceImpl">

<property name="accountDao" ref="accountDao"/>
<!-- （5）注入事务管理模板 -->
<property name="transactionTemplate" ref="transactionTemplate"/>
</bean>
<bean name="accountDao" class="com.phy.daoImpl.AccountDaoImpl">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--（3）配置事务管理器 -->
<!-- 可以直接写name="dataSrouce"，是因为在DataSourceTransactionManget类中有一个setDataSource方法,可以通过set方法直接注入 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>

<!-- (4)配置事务管理的模板：Spring为了简化事务管理的代码而提供的类 -->
<!-- 直接注入的理由同上 -->
<bean id="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager" ref="transactionManager"/>

</bean>
</beans>

jdbc.properies

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306:spring-transaction
jdbc.username=root
jdbc.password=123456

xml文件中配置的${jdbc.driverClassName}与jdbc.properties中的属性名一一对应。

AccountTest.java

package com.phy.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.phy.serivce.AccountService;
/**
* 编程式事务管理
* @author zongjb
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class AccountTest {
@Resource(name="accountService")
private AccountService accountService;
@Test
public void testAccount(){
accountService.transfers("aaa","bbb",200d);

}
}

jar包资源：http://download.csdn.net/detail/s18579103565/9587919

源码资源：http://download.csdn.net/detail/s18579103565/9587942