spring+hibernate+JTA 分布式事务的例子
对于横跨多个Hibernate SessionFacotry的分布式事务，只需简单地将 JtaTransactionManager 同多个 LocalSessionFactoryBean 的定义结合起来作为事务策略。你的每一个DAO通过bean属性得到各自的 SessionFactory 引用。如果所有的底层JDBC数据源都是支持事务的容器，那么只要业务对象使用了 JtaTransactionManager 作为事务策略，它就可以横跨多个DAO和多个session factories来划分事务，而不需要做任何特殊处理。
1 <beans> 2 3 <bean id="myDataSource1" class="org.springframework.jndi.JndiObjectFactoryBean"> 4 <property name="jndiName" value="java:comp/env/jdbc/myds1"/> 5 </bean> 6 7 <bean id="myDataSource2" class="org.springframework.jndi.JndiObjectFactoryBean"> 8 <property name="jndiName" value="java:comp/env/jdbc/myds2"/> 9 </bean> 10 11 <bean id="mySessionFactory1" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> 12 <property name="dataSource" ref="myDataSource1"/> 13 <property name="mappingResources"> 14 <list> 15 <value>product.hbm.xml</value> 16 </list> 17 </property> 18 <property name="hibernateProperties"> 19 <value> 20 hibernate.dialect=org.hibernate.dialect.MySQLDialect 21 hibernate.show_sql=true 22 </value> 23 </property> 24 </bean> 25 26 <bean id="mySessionFactory2" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> 27 <property name="dataSource" ref="myDataSource2"/> 28 <property name="mappingResources"> 29 <list> 30 <value>inventory.hbm.xml</value> 31 </list> 32 </property> 33 <property name="hibernateProperties"> 34 <value> 35 hibernate.dialect=org.hibernate.dialect.OracleDialect 36 </value> 37 </property> 38 </bean> 39 40 <bean id="myTxManager" class="org.springframework.transaction.jta.JtaTransactionManager"/> 41 42 <bean id="myProductDao" class="product.ProductDaoImpl"> 43 <property name="sessionFactory" ref="mySessionFactory1"/> 44 </bean> 45 46 <bean id="myInventoryDao" class="product.InventoryDaoImpl"> 47 <property name="sessionFactory" ref="mySessionFactory2"/> 48 </bean> 49 50 <!-- this shows the Spring 1.x style of declarative transaction configuration --> 51 <!-- it is totally supported, 100% legal in Spring 2.x, but see also above for the sleeker, Spring 2.0 style --> 52 <bean id="myProductService" 53 class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"> 54 <property name="transactionManager" ref="myTxManager"/> 55 <property name="target"> 56 <bean class="product.ProductServiceImpl"> 57 <property name="productDao" ref="myProductDao"/> 58 <property name="inventoryDao" ref="myInventoryDao"/> 59 </bean> 60 </property> 61 <property name="transactionAttributes"> 62 <props> 63 <prop key="increasePrice*">PROPAGATION_REQUIRED</prop> 64 <prop key="someOtherBusinessMethod">PROPAGATION_REQUIRES_NEW</prop> 65 <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop> 66 </props> 67 </property> 68 </bean> 69 70 </beans>
