Spring事务管理--实例3-SpringAOP注解配置

[TOC]

注意 MyISAM不支持Spring的事务管理，需要使用InnoDB

1. Spring配置文件

<?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" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop"
    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/aop http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">


    <!-- 开启事务注解模式 -->
    <tx:annotation-driven />

    <!-- spring事物管理器，封装了所有事物 -->
    <!-- 依赖于JDBC的C3P0连接池所生成的数据源（JDBC）数据源 -->
    <bean name="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
        p:dataSource-ref="dataSource" />

    <!-- 事物模板对象 -->
    <bean name="transactionTemplate"
        class="org.springframework.transaction.support.TransactionTemplate"
        p:transactionManager-ref="transactionManager" />

    <context:property-placeholder location="classpath:database.properties" />
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

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

    <bean name="moneyDao" class="top.belmode.dao.MoneyDaoImpl"
        p:dataSource-ref="dataSource" />

    <bean name="moneyService" class="top.belmode.service.MoneyServiceImpl"
        p:moneyDao-ref="moneyDao" />
</beans>

2. Service层代码

@Transactional(isolation = Isolation.REPEATABLE_READ, propagation = Propagation.REQUIRED, readOnly = true)
public class MoneyServiceImpl implements MoneyService {

    private MoneyDao moneyDao;

    public MoneyDao getMoneyDao() {
        return moneyDao;
    }

    public void setMoneyDao(MoneyDao moneyDao) {
        this.moneyDao = moneyDao;
    }
//    某些方法织入的 事务 有差异，可以在方法上再次注解
    @Override
    @Transactional(isolation = Isolation.REPEATABLE_READ, 
                   propagation = Propagation.REQUIRED, readOnly = false)
    public void transfer(Integer from, Integer to, Double money) {
        moneyDao.subMoney(from, money);
        //int a = 1 / 0; // 发生 by zero可以直接回滚
        moneyDao.addMoney(to, money);
    }

}

3.Junit测试

public class SpringTransactionTest {

    @SuppressWarnings("resource")
    @Test
    public void fun1() {
        ApplicationContext context = new 
          ClassPathXmlApplicationContext("applicationContext.xml");
        
        MoneyService moneyService = (MoneyService) context.getBean("moneyService");
        moneyService.transfer(2, 1, 200d);
    }
}