Spring管理事務的若干配置形式

雖說利用Spring來實現配置式事務的基本原理都是AOP，但其配置方法也多種多樣，以下從互聯網摘抄了一些，希望起一個總結作用（有版權問題的話請留言作者，我將立即刪除）：

以下配置均忽略datasource,transactionManager,sessionFactory之類的配置，因為無論何種方式，前兩者都不能少

1、? 比較原始和煩瑣的配置方法(每個SERVICE都來這么一下，不累死？)：

<bean id="serviceMe"??? class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">

??? ??? <property name="transactionManager">

?????? ??? <ref bean="transactionManager" />

??? ??? </property>

??? ??? <property name="target">

<bean??? class="com.test.test.service.Service1">

?????????? ??? <property name="myDao">

?????????? ?????? <ref bean="myDao" />

?????????? ??? </property>

?????? ??? </bean>

??? ??? </property>

??? ??? <property name="transactionAttributes">

?????? ??? <props>

?????????? ??? <prop key="save*">PROPAGATION_REQUIRED_NEW,-Exception</prop>

?????????? ??? <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>

?????? ??? </props>

??? ??? </property>

??? </bean>

?

2、下面有一點小改進，但還是有一些煩

<bean id="txProxyTemplate" abstract="true" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"> ??? <property name="transactionManager"> ??????? ref bean="transactionManager"/> ??? </property> ??? <property name="transactionAttributes"> ??????? <props> ??????????? <prop key="find*">PROPAGATION_REQUIRED, readOnly</prop> ??????????? <prop key="*">PROPAGATION_REQUIRED</prop> ??????? </props> ??? </property> </bean> ? <bean id="userManager" parent="txProxyTemplate"> ??? <property name="target"> ??????? <bean class="some.package.UserManagerImpl"> ??????????? <property name="userDAO"><ref bean="userDAO"/></property> ??????? </bean> ??? </property> </bean>

以后，如果增加新的Service/Manager，則XML配置的增量是這一段：

<bean id="someOtherManager" parent="txProxyTemplate"> ??? <property name="target"> ??????? <bean class="some.package.someOtherManagerImpl"> ??????? </bean> ??? </property> </bean>

上面說的是老的做法，比較傳統。缺點是增量比較大，配置起來copy&paste讓人覺得不太爽，比較臃腫。

3、用 DefaultAdvisorAutoProxyCreator 實現自動代理，實現了對容器中所有 bean 的自動代理, 增加一個需要事務的業務 bean 時只要在 transactionInterceptor 增加一行即可, 增加別的 interceptor 也非常方便，極大減少了配置量

?

<beans> ???? <!-- Transaction manager for a single Hibernate SessionFactory (alternative to JTA) --> ??? <bean id="transactionManager" ????????? class="org.springframework.orm.hibernate3.HibernateTransactionManager"> ????????? <property name="sessionFactory"> ????????????? <ref bean="sessionFactory"/> ????????? </property> ??? </bean> ? ???? <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor"> ??? ???? <property name="transactionManager" ref="transactionManager"/> ???? ???? <property name="transactionAttributeSource"> ??????? ? <value> ??????? ???? com.skyon.user.manager.UserManager.*=PROPAGATION_REQUIRED ??????? ???? #Add new defines here -> ??????? ? </value> ???? ???? </property> ???? </bean> ? ???? <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"> ???? ???? <property name="interceptorNames"> ??????? ???? <list> ??????? ???? ???? <value>transactionInterceptor</value> ??????? ???? ???? <!-- ??????? ???? ???? 增加新的 Interceptor ??????? ???? ???? --> ??????? ???? </list> ???? ???? </property> ???? </bean> ? ???? <bean class="org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor"> ???? ? <property name="transactionInterceptor" ref="transactionInterceptor"/> ???? </bean> ? </beans>

?

4、改用BeanNameAutoProxyCreator，畢竟不是context下的每個bean都需要事務

<beans> ??? <!-- Transaction manager for a single Hibernate SessionFactory (alternative to JTA) --> ??? <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> ??? ????<property name="sessionFactory"> ??????????? <ref bean="sessionFactory"/> ??????? </property> ??? </bean> ? ??? <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor"> ??????? <property name="transactionManager" ref="transactionManager"/>? ???? ???? <property name="transactionAttributes"> ??????? ???? <props> ??????? ???? ???? <prop key="*">PROPAGATION_REQUIRED</prop> ??????? ???? ???? <prop key="find*">PROPAGATION_REQUIRED,readOnly</prop> ??????? ???? </props> ???? ???? </property> ??? </bean> ? ??? <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"> ??????? <property name="beanNames"> ??????????? <value>*Service,*Manager</value> ??????? </property> ??????? <property name="interceptorNames"> ??????????? <list> ??????????????? <value>transactionInterceptor</value> ??????????????? <!-- 此處增加新的Interceptor --> ??????????? </list> ??????? </property> ??? </bean> ? ??? <bean class="org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor"> ??????? <property name="transactionInterceptor" ref="transactionInterceptor"/>? ?? ?</bean> ? ??? <bean id="userManager" class="some.package.UserManagerImpl" autoWire="byName"/> ? </beans>

以后每次的增量是這一段：

<bean id="userManager" class="some.package.UserManagerImpl" autoWire="byName"/>

?

5、BeanNameAutoProxyCreator的另一種配法

<!-- Transaction Interceptor set up to do PROPOGATION_REQUIRED on all methods -->

? <bean id="matchAllWithPropReq"

????? class="org.springframework.transaction.interceptor.MatchAlwaysTransactionAttributeSource">

??? <property name="transactionAttribute"><value>PROPAGATION_REQUIRED</value></property>

? </bean>

? <bean id="matchAllTxInterceptor"

????? class="org.springframework.transaction.interceptor.TransactionInterceptor">

??? <property name="transactionManager"><ref bean="transactionManager"/></property>

??? <property name="transactionAttributeSource"><ref bean="matchAllWithPropReq"/></property>

? </bean>

?

? <!-- One BeanNameAutoProxyCreator handles all beans where we want all methods to use

?????? PROPOGATION_REQUIRED -->

? <bean id="autoProxyCreator"

????? class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">

??? <property name="interceptorNames">

????? <list>

??????? <idref local="matchAllTxInterceptor"/>

??????? <idref bean="hibInterceptor"/>

????? </list>

??? </property>

??? <property name="beanNames">

????? <list>

??????? <idref local="core-services-applicationControllerSevice"/>

??????? <idref local="core-services-deviceService"/>

??????? <idref local="core-services-authenticationService"/>

??????? <idref local="core-services-packagingMessageHandler"/>

??????? <idref local="core-services-sendEmail"/>

??????? <idref local="core-services-userService"/>

????? </list>

??? </property>

? </bean>

?

?

其它一些注意：

1、如果你想使用配置事務，但又不想使用Spring的模板方法，要注意，獲取connection時不能直接從dataSource獲得：

Connection conn = DataSourceUtils.getConnection(dataSource);

2、? 默認情況下SPRING只有在RuntimeException時才回滾事務，要使其它異常也回滾，需要在配置中作一些改變，見第一種配置中的相關信息。

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