spring声明式事务管理的两种方式

 

传统的：

 1 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

 2         <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />

 3         <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:dev" />

 4         <property name="username" value="kaktos" />

 5         <property name="password" value="kaktos" />

 6     </bean>

 7 

 8     <bean id="txManager"

 9         class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

10         <property name="dataSource" ref="dataSource" />

11     </bean>

12 

13     <bean id="businessBean"

14         class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">

15         <property name="transactionManager" ref="txManager" />

16         <property name="target" ref="businessBeanTarget" />

17         <property name="transactionAttributes">

18             <props>                

19                 <prop key="*">PROPAGATION_REQUIRED</prop>

20             </props>

21         </property>

22     </bean>

23     

24     <bean id="businessBeanTarget" class="sample.spring.trans.BusinessBean">

25         <property name="dataSource" ref="dataSource" />

26     </bean>

这样做的弊端就是不得不为每个需要事务的bean做一次声明，如果所有的bean都基本上有一致的配置，这样就太繁琐啦。

下面是第二种方式：

 1 <beans>

 2     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

 3         <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />

 4         <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:dev" />

 5         <property name="username" value="kaktos" />

 6         <property name="password" value="kaktos" />

 7     </bean>

 8 

 9     <bean id="txManager"

10         class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

11         <property name="dataSource" ref="dataSource" />

12     </bean>

13 

14     <bean id="matchAllWithPropReq"

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

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

17     </bean>

18     

19     <bean id="matchAllTxInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">

20         <property name="transactionManager" ref="txManager" />

21         <property name="transactionAttributeSource" ref="matchAllWithPropReq" />

22     </bean>

23 

24     <bean id="autoProxyCreator"

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

26         <property name="interceptorNames">

27             <list>

28                 <idref local="matchAllTxInterceptor" />

29             </list>

30         </property>

31         <property name="beanNames">

32             <list>

33                 <idref local="businessBean" />

34             </list>

35         </property>

36     </bean>

37     

38     <!--  my beans  -->

39     <bean id="businessBean" class="sample.spring.trans.BusinessBean">

40         <property name="dataSource" ref="dataSource" />

41     </bean>

42 </beans>

 

BeanNameAutoProxyCreator会在applicationcontext初始化后自动为beanNames属性中的bean建立proxy。