spring框架 事务 注解配置方式

user=LF
password=LF
jdbcUrl=jdbc:oracle:thin:@localhost:1521:orcl
driverClass=oracle.jdbc.driver.OracleDriver

initialPoolSize=15
maxPoolSize=30
minPoolSize=5

<?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"
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"> 
<!-- 配置自动扫描的包 -->
<context:component-scan base-package="com.zr.trasaction"></context:component-scan>

<!-- 引用外部文件 -->
<context:property-placeholder location="classpath:db.properties"/>

<!-- 配置dataSource -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="${user}"></property>
<property name="password" value="${password}"></property>
<property name="jdbcUrl" value="${jdbcUrl}"></property>
<property name="driverClass" value="${driverClass}"></property>

<property name="initialPoolSize" value="${initialPoolSize}"></property>
<property name="maxPoolSize" value="${maxPoolSize}"></property>
<property name="minPoolSize" value="${minPoolSize}"></property>
</bean>
<!-- 配置jdbcTemplate -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置事务声明方式 -->
<tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

package com.zr.trasaction.entity;

public class Amount {

private String user;//用户名
private double money;//金额
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
public double getMoney() {
return money;
}
public void setMoney(double money) {
this.money = money;
}
public Amount() {
super();
}
public Amount(String user, double money) {
super();
this.user = user;
this.money = money;
}
@Override
public String toString() {
return "Amount [user=" + user + ", money=" + money + "]";
}

}

package com.zr.trasaction.entity;

public class BalanceException extends RuntimeException {

private static final long serialVersionUID = 1L;

public BalanceException() {
super();
}

public BalanceException(String message) {
super(message);
}

public BalanceException(String message, Throwable cause) {
super(message, cause);
}

public BalanceException(Throwable cause) {
super(cause);
}

protected BalanceException(String message, Throwable cause,
boolean enableSuppression,
boolean writableStackTrace) {
super(message, cause, enableSuppression, writableStackTrace);
}
}

package com.zr.trasaction.dao;

public interface AmountDao {

/**
* 转出钱
* @return
*/
public boolean decreaseMoney(String username,double money) ;

/**
* 转入钱
* @return
*/
public boolean increaseMoney(String username,double money);

}

package com.zr.trasaction.daoImpl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import com.zr.trasaction.dao.AmountDao;

@Repository
public class AmountDaoImpl implements AmountDao {
@Autowired(required=true)
private JdbcTemplate jdbcTemplate;

public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
}

@Override
public boolean decreaseMoney(String username, double money) {

String sql = "UPDATE TEST SET MONEY=MONEY-? WHERE USERNAME=?";
int i = -1;
i = jdbcTemplate.update(sql,money, username);
if(i>0){
return true;
}
return false;
}

@Override
public boolean increaseMoney(String username, double money) {
String sql = "UPDATE TEST SET MONEY=MONEY+? WHERE USERNAME=?";
int i = -1;
i = jdbcTemplate.update(sql,money, username);
if(i>0){
return true;
}
return false;
}

}

package com.zr.trasaction.Service;

import com.zr.trasaction.entity.Amount;

public interface AmountService {

/**
* 转账业务
* @param desAmount 扣钱的账户
* @param incAmount    增加的账户
* @param money 转账的金额
* @return
*/
public boolean transferMoneyService(Amount desAmount,Amount incAmount,double money);

}

package com.zr.trasaction.ServiceImpl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.zr.trasaction.Service.AmountService;
import com.zr.trasaction.daoImpl.AmountDaoImpl;
import com.zr.trasaction.entity.Amount;
import com.zr.trasaction.entity.BalanceException;

@Service("amountServiceImpl")
public class AmountServiceImpl implements AmountService {
@Autowired(required=true)
private AmountDaoImpl amountDaoImpl;
@Autowired(required=true)
private JdbcTemplate jdbcTemplate;

public void setAmountDaoImpl(AmountDaoImpl amountDaoImpl) {
this.amountDaoImpl = amountDaoImpl;
}

public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
}
/**
*    REQUIRED（默认值）:在有transaction状态下执行;如当前没有transaction，则创建新的transaction
* 只读事务属性readOnly=true: 表示这个事务只读取数据但不更新数据, 这样可以帮助数据库引擎优化事务
* 超时事务属性timeout=3: 事务在强制回滚之前可以保持多久. 这样可以防止长期运行的事务占用资源.单位为秒,一般不设置，使用默认的
* noRollbackForClassName={"BalanceException"} 发生BalanceException异常不回滚
*/
@Transactional(propagation=Propagation.REQUIRED,isolation=Isolation.READ_COMMITTED,readOnly=true,timeout=3/*,noRollbackForClassName={"BalanceException"}*/)
@Override
public boolean transferMoneyService(Amount desAmount, Amount incAmount,
double money) {
String sql = "SELECT MONEY FROM TEST WHERE USERNAME=?";
double balance = jdbcTemplate.queryForObject(sql, Double.class, desAmount.getUser());

boolean success1 = amountDaoImpl.decreaseMoney(desAmount.getUser(), money);
boolean success2 = amountDaoImpl.increaseMoney(incAmount.getUser(), money);

if(balance < money){
throw new BalanceException("余额不足");
}
return success1 && success2;
}

}

package com.zr.trasaction.test;

import javax.sql.DataSource;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;

import com.mchange.v2.c3p0.ComboPooledDataSource;
import com.zr.trasaction.Service.AmountService;
import com.zr.trasaction.ServiceImpl.AmountServiceImpl;
import com.zr.trasaction.daoImpl.AmountDaoImpl;
import com.zr.trasaction.entity.Amount;

public class TestA {

public static void main(String[] args) {

ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");

Amount desAmount = new Amount("lf", 0);
Amount incAmount = new Amount("tl", 0);
AmountService impl = (AmountService) ac.getBean("amountServiceImpl");
boolean isSuccess = impl.transferMoneyService(desAmount, incAmount, 10);

}

}