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