spring事务管理之转账案例

AccountDao类：
public interface AccountDao {
//加钱
void increaseMoney(Integer id,Double money);
//减钱
void decreaseMoney(Integer id,Double money);
}

AccountDaoImpl实现类：
public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao{
@Override
public void increaseMoney(Integer id, Double money) {
getJdbcTemplate().update("update t_account set money=money+? where id=?",money,id);

}
@Override
public void decreaseMoney(Integer id, Double money) {
getJdbcTemplate().update("update t_account set money=money-? where id=?",money,id);

}
}

AccountService类：
public interface AccountService {
//转账方法
void transfer(Integer from,Integer to,Double money);
}

AccountServiceImpl实现类：
public class AccountServiceImpl implements AccountService{
private AccountDao ad;
public AccountDao getAd() {
return ad;
}
public void setAd(AccountDao ad) {
this.ad = ad;
}
@Override
public void transfer(Integer from, Integer to, Double money) {
//减钱
ad.decreaseMoney(from, money);
//加钱
ad.increaseMoney(to, money);
}

}

applicatContext2.xml配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="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/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">
<!-- 指定spring读取db.properties配置 -->
<context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
<!-- 事务核心管理器，封装了所有事务操作，依赖于连接池 -->
<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置事务通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 一方法为单位指定方法应用什么事务属性
isolation:隔离级别
propagation:传播行为
read-only:是否只读-->
<tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"></tx:method>
<tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"></tx:method>
<tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"></tx:method>
<tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"></tx:method>
<tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"></tx:method>
<tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"></tx:method>
<tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true"></tx:method>
<tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true"></tx:method>
<tx:method name="transfer" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"></tx:method>
</tx:attributes>
</tx:advice>
<!-- 配置植入，将通知植入目标对象 -->
<aop:config>
<aop:pointcut expression="execution(* cn.itcast.service.*ServiceImpl.*(..))" id="txPc"></aop:pointcut>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc"/>
</aop:config>
<!-- 1.将连接池放入spring容器 -->
<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="root"/>
<property name="password" value=""/>
</bean>
<!-- 2.将JDBCTemplate放入spring容器 -->
<!-- <bean name="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean> -->
<!-- 3.将UserDao放入spring容器 -->
<bean name="userDao" class="cn.itcast.a_jdbctemplate.UserDaoImpl">
<!-- <property name="jt" ref="jdbcTemplate"></property> -->
<property name="dataSource" ref="dataSource"></property>
</bean>
<bean name="accountDao" class="cn.itcase.dao.AccountDaoImpl">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- service -->
<bean name="accountService" class="cn.itcast.service.AccountServiceImpl">
<property name="ad" ref="accountDao"/>
</bean>
</beans>

测试类：
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext2.xml")
public class Demo {
@Resource(name="accountService")
private AccountService as;
@Test
public void fun1(){
as.transfer(1, 2, 100d);
}
}

注解配置aop事务：

applicationContext.xml配置文件中开启注解管理事务:

<!-- 开启使用注解管理事务aop -->

<tx:annotation-driven/>

使用注解：（service方法中注解打开事务）

@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=false)
public void transfer(Integer from, Integer to, Double money) {
//减钱
ad.decreaseMoney(from, money);
int i=1/0;
//加钱
ad.increaseMoney(to, money);
}