[Spring]事务管理--实例3-SpringAOP注解配置

亦凉 2022-05-08 03:16 312阅读 0赞

# Spring事务管理--实例3-SpringAOP注解配置 #

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> 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">
    
    
        
        <tx:annotation-driven />
    
        
        
        <bean name="transactionManager"
            class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
            p:dataSource-ref="dataSource" />
    
        
        <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);
        }
    }