关于用spring的JtaTransactionManager，配置分布式事务摘自（http://www.blogjava.net/landor2004/archive/2
关于用spring的JtaTransactionManager，配置分布式事务
摘自（http://www.blogjava.net/landor2004/archive/2010/01/09/308827.html）
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如果容器支持jta，那么spring配置起来非常简单，因为spring提供了JtaTransactionManager，在这里面提供了几乎所有的服务器的jta的jndi名字，比如
*?"java:comp/UserTransaction"?for?Resin?2.x,?Oracle?OC4J?(Orion),?JOnAS?(JOTM),?BEA?WebLogic
*?"java:comp/TransactionManager"?for?Resin?3.x
*?"java:appserver/TransactionManager"?for?GlassFish
*?"java:pm/TransactionManager"?for?Borland?Enterprise?Server?and?Sun?Application?Server?(Sun?ONE?7?and?later)
*?"java:/TransactionManager"?for?JBoss?Application?Server?
由于大部分服务器获取jta的方式都不尽相同，spring还针对不同的服务器提供了不同的jta实现，例如：
WebLogicJtaTransactionManager
WebSphereUowTransactionManager
OC4JJtaTransactionManager
具体内容参加：
http://static.springsource.org/spring/docs/2.5.x/api/org/springframework/transaction/jta/JtaTransactionManager.html
不管是jdbc、hibernate还是ibatis，都可以通过JtaTransactionManager来配置分布式事务
下面简单贴出部分配置代码：
hibernate：<beans>
??<jee:jndi-lookup?id="myDataSource1"?jndi-name="dsjndi1"?/>
??<jee:jndi-lookup?id="myDataSource2"?jndi-name="dsjndi2"?/>
??<bean?id="mySessionFactory1"
????????class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
????????<property?name="dataSource">
????????????<ref?bean="myDataSource1"?/>
????????</property>
????????<property?name="hibernateProperties">
????????????<props>
????????????????<prop?key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
????????????????<prop?key="hibernate.show_sql">true</prop>
????????????????<prop?key="hiberante.format_sql">true</prop>
????????????</props>
????????</property>?
????????<property?name="annotatedClasses">
????????????<list>
????????????????<value>com.landor.test.entity.User</value>
????????????</list>
????????</property>
????????<property?name="annotatedPackages">
????????????<list>
????????????????<value>com.landor.test.entity</value>
????????????</list>
????????</property>
??</bean>
??<bean?id="mySessionFactory2"
????????class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
????????<property?name="dataSource">
????????????<ref?bean="myDataSource2"?/>
????????</property>
????????
??</bean>
??<bean?id="myTxManager"?class="org.springframework.transaction.jta.JtaTransactionManager"/>
? <!--如果默认id=transactionManager，那么可以有下面的标签，这样spring会自动寻找相应的jta的jndi并且注入
? <tx:jta-transaction-manager/>-->
??<tx:advice?id="txAdvice"?transaction-manager="myTxManager">
????<tx:attributes>
????????<tx:method?name="select*"?read-only="true"?propagation="REQUIRED"/>
????????<tx:method?name="find*"?read-only="true"??propagation="REQUIRED"/>
????????<tx:method?name="save*"??propagation="REQUIRED"?isolation="REPEATABLE_READ"/>
????????<tx:method?name="update*"??propagation="REQUIRED"?isolation="REPEATABLE_READ"/>
????????<tx:method?name="add*"??propagation="REQUIRED"?isolation="REPEATABLE_READ"?/>
????????<tx:method?name="delete*"??propagation="REQUIRED"?isolation="REPEATABLE_READ"/>
????</tx:attributes>
??</tx:advice>
</beans>
ibatis：ibatis与hibernate是一样的，只需要将hibernate的sessionFactory部分更换一下
??? ......
????<bean?id="sqlMap1Client"
????????class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
????????<property?name="dataSource"?ref="myDataSource1"?/>
????????<property?name="configLocation"?value="xxx/SqlMapConfig.xml"?/>
????</bean>
????<bean?id="sqlMap2Client"
????????class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
????????<property?name="dataSource"?ref="OssDS"?/>
????????<property?name="configLocation"?value="xxx/SqlMapConfig.xml"?/>
????</bean>
??? ......
