Spring-transaction(事物)

一,前言

        spring事物最典型的案列是用在转账上面,所以SSM框架中简单的模拟转账功能。

二、ApplicationContent.xml配置

2.1 完整的ssm框架配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:task="http://www.springframework.org/schema/task" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	    http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-3.2.xsd 
		http://www.springframework.org/schema/aop  
    	http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
    	http://www.springframework.org/schema/task  
		http://www.springframework.org/schema/task/spring-task-3.1.xsd
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx.xsd"
	    default-lazy-init="true">

	<!-- 自动扫描 --> 
    <context:component-scan base-package="com.bsoft.cn" /> 
    <!-- 加载properties配置文件 --> 
    <bean id="propertyConfigurer" 
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 
        <property name="location" value="classpath:jdbc.properties" /> 
    </bean> 
   
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" 
        destroy-method="close"> 
        <property name="driverClassName" value="${driver}" /> 
        <property name="url" value="${url}" /> 
        <property name="username" value="${username}" /> 
        <property name="password" value="${password}" /> 
        <!-- 初始化连接大小 --> 
        <property name="initialSize" value="${initialSize}"></property> 
        <!-- 连接池最大数量 --> 
        <property name="maxActive" value="${maxActive}"></property> 
        <!-- 连接池最大空闲 --> 
        <property name="maxIdle" value="${maxIdle}"></property> 
        <!-- 连接池最小空闲 --> 
        <property name="minIdle" value="${minIdle}"></property> 
        <!-- 获取连接最大等待时间 --> 
        <property name="maxWait" value="${maxWait}"></property> 
    </bean> 
   
    <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 --> 
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 
        <property name="dataSource" ref="dataSource" /> 
        <property name="configLocation" value="classpath:mybatisConfig.xml" />
        <!-- 自动扫描mapping.xml文件 --> 
        <property name="mapperLocations" value="classpath:com/bsoft/cn/**/dao/mapping/*.xml"></property> 
    </bean> 
   
    <!-- DAO接口所在包名,Spring会自动查找其下的类 --> 
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 
        <property name="basePackage" value="com.bsoft.cn.test.dao" /> 
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> 
    </bean> 
   
   
    <bean id="quartzTestTask" class="com.bsoft.cn.test.task.TestTask"/>
    <!-- quartz配置  start-->
    <!-- 定义调用对象和调用对象的方法 -->
	<bean id="quartzTestBean" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
		<!--调用的类 -->
		<property name="targetObject" ref="quartzTestTask" />
		<!--调用类中的方法 -->
		<property name="targetMethod" value="test" />
	</bean>
	
	<!-- 定义触发时间 -->
	<bean id="testCronTriggerBean" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
		<property name="jobDetail" ref="quartzTestBean" />
		 <!--cron表达式 -->
		<property name="cronExpression" value="0 0/1 * * * ?"/>
	</bean>
	
	<!--任务总管理类 如果将lazy-init='false'那么容器启动就会执行调度程序  -->
	<bean id="schedulerFactoryBean" lazy-init="false" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
		<property name="triggers">
			<list>
      			<ref bean="testCronTriggerBean"/>
			</list>
		</property>
	</bean>
	 <!-- quartz配置  end-->
	
	 <!-- 配置事务管理 start--> 
    <bean id="txManager" 
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
        <property name="dataSource" ref="dataSource" /> 
    </bean> 
    
    <!-- 4.2 事务详情(事务通知)  , 在aop筛选基础上,对ABC三个确定使用什么样的事务。例如:AC读写、B只读 等
		<tx:attributes> 用于配置事务详情(属性属性)
			<tx:method name=""/> 详情具体配置
				propagation 传播行为 , REQUIRED:必须;REQUIRES_NEW:必须是新的
				isolation 隔离级别
	-->
	<tx:advice id="txAdvice" transaction-manager="txManager">
		<tx:attributes>
			<tx:method name="transfer" propagation="REQUIRED" isolation="DEFAULT"/>
		</tx:attributes>
	</tx:advice>
	<!-- 4.3 AOP编程,目标类有ABCD(4个连接点),切入点表达式 确定增强的连接器,从而获得切入点:ABC -->
	<aop:config>
	    <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.bsoft.cn.test.service.*.*(..))"/>
	</aop:config>
    <!-- 配置事务管理 start end--> 
	
</beans>

2.2 spring事物的相关配置

 <!-- 配置事务管理 start--> 
    <bean id="txManager" 
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
        <property name="dataSource" ref="dataSource" /> 
    </bean> 
    
    <!-- 4.2 事务详情(事务通知)  , 在aop筛选基础上,对ABC三个确定使用什么样的事务。例如:AC读写、B只读 等
		<tx:attributes> 用于配置事务详情(属性属性)
			<tx:method name=""/> 详情具体配置
				propagation 传播行为 , REQUIRED:必须;REQUIRES_NEW:必须是新的
				isolation 隔离级别
	-->
	<tx:advice id="txAdvice" transaction-manager="txManager">
		<tx:attributes>
			<tx:method name="transfer" propagation="REQUIRED" isolation="DEFAULT"/>
		</tx:attributes>
	</tx:advice>
	<!-- 4.3 AOP编程,目标类有ABCD(4个连接点),切入点表达式 确定增强的连接器,从而获得切入点:ABC -->
	<aop:config>
	    <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.bsoft.cn.test.service.*.*(..))"/>
	</aop:config>
    <!-- 配置事务管理 start end--> 

三、测试案列

控制器:

@Controller
@RequestMapping("/account")
public class AccountController {
	
	
	@Autowired
	private AccountService service;
	
	@RequestMapping("/transfer")
	public String transfer(){
		
		service.transfer("jack", "rose", 1000);
		
		return "transfer";
	} 

}

服务类:

@Service
public class AccountService {
	
	@Autowired
	private AccountDao accountDao;
	
	public void transfer(String ourName,String innerName,double money){
	
		accountDao.out(ourName, money);
		int a = 1/0;
		accountDao.inner(innerName, money);
		
	}

}

持久层:

public interface AccountDao {
	//出账
	public void out(@Param("userName")String userName,@Param("money")double money);
	//入账
	public void inner(@Param("userName")String userName,@Param("money")double money);

}

Mapper文件:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.bsoft.cn.test.dao.AccountDao">

	<update id="out">
	   update account set money = money - ${money} where username = '${userName}'
	</update>
	
	<update id="inner">
	     update account set money = money + ${money} where username = '${userName}'
	</update>

</mapper>



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转载自blog.csdn.net/dc282614966/article/details/80901730