Spring中事务管理的几种配法

这里假定我们已经有了一些现成的类和接口，比如说

1. 一个现成的User POJO对象

2. 一个UserDao接口和UserDaoHibernateImpl实现类

3. 一个UserService接口和UserServiceImpl实现类

具体配置方法如下：

1. 使用spring的BeanNameAutoProxyCreator和TransactionInterceptor配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"
	   default-lazy-init="true">
	<bean id="userService" class="test.service.UserServiceImpl">
		<property name="userDao" ref="userDao"/>
	</bean>
	
	<bean id="userDao" class="test.dao.UserDaoHibernateImpl">
		<property name="sessionFactory" ref="mySessionFactory"/>
	</bean>
	<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="beanNames">
			<list>
				<value>userService</value>
			</list>
		</property>
		<property name="interceptorNames">
			<list>
				<value>myTransactionInterceptor</value>
			</list>
		</property>
	</bean>
	<bean id="myTransactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
		<property name="transactionManager">
			<ref bean="myTransactionManager" />
		</property>
		<property name="transactionAttributes">
			<props>
				<prop key="save*">PROPAGATION_REQUIRED</prop>
				<prop key="del*">PROPAGATION_REQUIRED</prop>
				<prop key="update*">PROPAGATION_REQUIRED</prop>
				<prop key="create*">PROPAGATION_REQUIRED</prop>
				<prop key="add*">PROPAGATION_REQUIRED</prop>
				<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
	</bean>
	<bean id="myTransactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="mySessionFactory"/>
	</bean>
	
	<bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="myDataSource"/>
		<property name="mappingResources">
			<list>
				<value>test/user.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<value>hibernate.dialect=org.hibernate.dialect.HSQLDialect</value>
		</property>
	</bean>
	<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
		<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
		<property name="url" value="jdbc:hsqldb:res:hsqldb/testdb"/>
		<property name="username" value="sa"/>
		<property name="password" value=""/>
	</bean>
</beans>

2. 使用spring常用的proxy配法，这里使用了对abstract bean的定义

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"
	   default-lazy-init="true">
	<bean id="userService" parent="myProxyTemplate">
		<property name="target" ref="userServiceTarget"/>
		<property name="proxyInterfaces" value="test.service.UserService"/>
	</bean>
	<bean id="userServiceTarget" class="test.service.UserServiceImpl">
		<property name="userDao" ref="userDao"/>
	</bean>
	
	<bean id="userDao" class="test.dao.UserDaoHibernateImpl">
		<property name="sessionFactory" ref="mySessionFactory"/>
	</bean>
	<bean id="myProxyTemplate" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
		<property name="transactionManager">
			<ref bean="myTransactionManager" />
		</property>
		<property name="transactionAttributes">
			<props>
				<prop key="save*">PROPAGATION_REQUIRED</prop>
				<prop key="del*">PROPAGATION_REQUIRED</prop>
				<prop key="update*">PROPAGATION_REQUIRED</prop>
				<prop key="create*">PROPAGATION_REQUIRED</prop>
				<prop key="add*">PROPAGATION_REQUIRED</prop>
				<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="list*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
	</bean>
	<bean id="myTransactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="mySessionFactory"/>
	</bean>
	
	<bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="myDataSource"/>
		<property name="mappingResources">
			<list>
				<value>test/user.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<value>hibernate.dialect=org.hibernate.dialect.HSQLDialect</value>
		</property>
	</bean>
	<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
		<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
		<property name="url" value="jdbc:hsqldb:res:hsqldb/testdb"/>
		<property name="username" value="sa"/>
		<property name="password" value=""/>
	</bean>
</beans>

3. 使用spring提供的tx命名空间和aop配置

<?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: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-2.0.xsd
	   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
	   http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd"
	   default-lazy-init="true">
	<bean id="userService" class="test.UserServiceImpl">
		<property name="userDao" ref="userDao"/>
	</bean>
	
	<bean id="userDao" class="test.UserDaoHibernateImpl">
		<property name="sessionFactory" ref="mySessionFactory"/>
	</bean>
	<tx:advice id="txAdvice" transaction-manager="myTransactionManager">
	   <tx:attributes>
			<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
		   <tx:method name="list*" propagation="SUPPORTS" read-only="true"/>
		   <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
		 <tx:method name="*" propagation="REQUIRED" />
	   </tx:attributes>
	 </tx:advice>
	 <aop:config>
	   <aop:pointcut id="userServiceOperation" expression="execution(* *..test.UserService.*(..))"/>
	   <aop:advisor advice-ref="txAdvice" pointcut-ref="userServiceOperation"/>
	 </aop:config>
	<bean id="myTransactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="mySessionFactory"/>
	</bean>
	
	<bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="myDataSource"/>
		<property name="mappingResources">
			<list>
				<value>test/user.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<value>hibernate.dialect=org.hibernate.dialect.HSQLDialect</value>
		</property>
	</bean>
	<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
		<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
		<property name="url" value="jdbc:hsqldb:res:hsqldb/testdb"/>
		<property name="username" value="sa"/>
		<property name="password" value=""/>
	</bean>
</beans>