SSH与SSM学习之Spring23——Spring事务之注解配置方式管理事务
一、导包
Spring AOP包
“`xml
spring-aop
spring-aspects
org.aspectj.weaver
org.aopalliance
“`
二、AccountSeviceImpl类
Dao接口以及实现、Service接口和之前的是一样的，AccountSeviceImpl不一样，如下
事务的注解可以注解到类上，也可以注解到方法上，可以两者都注解。
package com.qwm.spring3.tx.service;
import com.qwm.spring3.tx.dao.AccountDao;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;
/**
* @author：qiwenming
* @date：2017/10/31 0031 21:02
* @description：
*/
@Transactional(isolation = Isolation.REPEATABLE_READ,propagation = Propagation.REQUIRED,readOnly = false)
public class AccountServiceImpl implements AccountService {
private AccountDao ad;
private TransactionTemplate tt;
@Override
@Transactional(isolation = Isolation.REPEATABLE_READ,propagation = Propagation.REQUIRED,readOnly = false)
public void updateMoney(Long fromId, Long toId, Double money) {
//减钱
ad.decreaseMoney(fromId,money);
// int i = 1/0;
//加钱
ad.increaseMoney(toId,money);
}
public void setAd(AccountDao ad) {
this.ad = ad;
}
public void setTt(TransactionTemplate tt) {
this.tt = tt;
}
}三、配置配置文件
3.1 开启注解管理事务
<!-- 开启使用注解管理aop事务 -->
<tx:annotation-driven/>3.2 完整配置
<?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-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd ">
<!-- 1.指定spring读取db.properties配置-->
<context:property-placeholder location="classpath:com/qwm/spring3/db.properties"/>
<!--2.将连接池对象放入到spring容器中-->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
<property name="driverClass" value="${jdbc.driverClass}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 3.将AccountDao放入到spring 容器中 -->
<bean name="accountDao" class="com.qwm.spring3.tx.dao.AccountDaoImpl">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--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>
<!--事务模板对象-->
<bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager" ref="transactionManager"/>
</bean>
<!-- 开启使用注解管理aop事务 -->
<tx:annotation-driven/>
<!--4.将AccountService放入到spring容器中-->
<bean name="accountService" class="com.qwm.spring3.tx.service.AccountServiceImpl">
<property name="ad" ref="accountDao"/>
<property name="tt" ref="transactionTemplate"/>
</bean>
</beans>四、测试
测试之前，先把数据库中表的数据恢复到初始值
测试代码
/**
* @author：qiwenming
* @date：2017/10/31 0031 21:32
* @description：
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:com/qwm/spring3/tx/applicationContext.xml")
public class Demo {
@Resource(name = "accountService")
private AccountService as;
@Test
public void test1(){
as.updateMoney(1L,2L,100D);
}
}结果
五、源码下载
https://github.com/wimingxxx/spring01/tree/master/src/com/qwm/spring3/tx