2019.1.2 Spring管理事务的方式

Spring管理事务的方式

1.编码式

• 1.将核心事务管理器配置到Spring容器
  
  

• 2.配置TransactionTemplate模版
  
  

• 3.将事务模版注入service
  
  

• 4.在Service中调用模版
  
  

• 测试
  
  

执行了两次

<?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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd ">

	<context:property-placeholder
		location="classpath:db.properties" />

	<bean name="dataSource"
		class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="user" value="${jdbc.user}"></property>
		<property name="password" value="${jdbc.password}"></property>
	</bean>

	<bean name="accountDao" class="com.legend.dao.impl.AccountDaoImpl">
		<property name="dataSource" ref="dataSource"></property>
	</bean>

	<bean name="accountService"
		class="com.legend.service.AccountServiceImpl">
		<property name="ad" ref="accountDao"></property>
	</bean>
</beans>

<?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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd ">

<context:property-placeholder location="classpath:db.properties"/>

<!-- 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"></property>
</bean>

<!-- 事务模版对象 -->
<bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
	<property name="transactionManager" ref="transactionManager"></property>
</bean>

<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" >
	<property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property>
	<property name="driverClass" value="${jdbc.driverClass}" ></property>
	<property name="user" value="${jdbc.user}" ></property>
	<property name="password" value="${jdbc.password}" ></property>
</bean>

<bean name="accountDao" class="com.legend.dao.impl.AccountDaoImpl">
	<property name="dataSource" ref="dataSource"></property>
</bean>

<bean name="accountService2" class="com.legend.service.AccountServiceImpl2">
	<property name="ad" ref="accountDao"></property>
	<property name="tt" ref="transactionTemplate"></property>
</bean>
</beans>

2.xml配置(aop)

• 1.导包
  
  

• 2.导入新的约束（tx）
  
  

命名空间的作用

beans：最基本

context：读取properties配置

aop：配置aop

tx：配置事务通知

• 3.配置通知
  
  

• 4.配置将通知织入目标
  
  

• 配置文件

<?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-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">

	<context:property-placeholder location="classpath:db.properties"/>

	<!-- 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"></property>
	</bean>

	<!-- 事务模版对象 -->
	<bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
		<property name="transactionManager" ref="transactionManager"></property>
	</bean>

	<!-- 配置事务通知 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<!--
				<tx:method name="transfer" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"/>
			-->
			<!-- 使用通配符的方式解决批量设置 -->
			<!-- 以方法为单位,指定方法应用什么事务属性
					isolation:隔离级别
					propagation:传播行为
					read-only:是否只读
		 -->
			<tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
			<tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
			<tx:method name="transfer" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
		</tx:attributes>
	</tx:advice>

	<!-- 配置织入 -->
	<aop:config  >
	<!-- 配置切点表达式 -->
	<aop:pointcut expression="execution(* com.legend.service.*ServiceImpl3.*(..))" id="txPc"/>
	<!-- 配置切面 : 通知+切点
		 	advice-ref:通知的名称
		 	pointcut-ref:切点的名称
	 -->
	<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
</aop:config>

	<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" >
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property>
		<property name="driverClass" value="${jdbc.driverClass}" ></property>
		<property name="user" value="${jdbc.user}" ></property>
		<property name="password" value="${jdbc.password}" ></property>
	</bean>

	<bean name="accountDao" class="com.legend.dao.impl.AccountDaoImpl">
		<property name="dataSource" ref="dataSource"></property>
	</bean>

	<bean name="accountService3" class="com.legend.service.AccountServiceImpl3">
		<property name="ad" ref="accountDao"></property>
		<property name="tt" ref="transactionTemplate"></property>
	</bean>
</beans>

3.注解配置

• 1.导包
  
  

• 2.导入新的约束（tx）

• 3.开启注解事务配置
  
  

• 4.使用注解
  
  

<?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-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">

	<context:property-placeholder location="classpath:db.properties"/>
<!-- 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" ></property>
</bean>
<!-- 事务模板对象 -->
<bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate" >
	<property name="transactionManager" ref="transactionManager" ></property>
</bean>

 <!-- 开启使用注解管理事务aop -->
 <tx:annotation-driven/>

	<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" >
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property>
		<property name="driverClass" value="${jdbc.driverClass}" ></property>
		<property name="user" value="${jdbc.user}" ></property>
		<property name="password" value="${jdbc.password}" ></property>
	</bean>

	<bean name="accountDao" class="com.legend.dao.impl.AccountDaoImpl">
		<property name="dataSource" ref="dataSource"></property>
	</bean>

	<bean name="accountService4" class="com.legend.service.AccountServiceImpl4">
		<property name="ad" ref="accountDao"></property>
		<property name="tt" ref="transactionTemplate"></property>
	</bean>
</beans>