spring+hibernate+jotm分布式事务配置总结

两个不同网域的oracle数据库，处理之间的事务，

     spring+hibernate+jotm组合，

一、环境及框架
       Tomcat+spring+hibernate+jotm,struts,Oracle等
二、需求说明
      系统里有2套不同网域的oracle数据库，之间的数据需要进行交互。
三、Dao配置
       1、定义jtom Bean  

< bean   id = "jotm"   class = "org.springframework.transaction.jta.JotmFactoryBean"   />

       2、定义数据源

< bean   id = "dataSourceA"   class = "org.enhydra.jdbc.pool.StandardXAPoolDataSource"   destroy-method = "shutdown" >
    < property   name = "dataSource" >
        < bean   class = "org.enhydra.jdbc.standard.StandardXADataSource"   destroy-method = "shutdown" >
            < property   name = "transactionManager" >
                < ref   local = "jotm"   />
            </ property >
            < property   name = "driverName" >
                < value > oracle.jdbc.driver.OracleDriver </ value >
            </ property >
            < property   name = "url" >
                < value > jdbc:oracle:thin:@192.168.0.10:1521:A </ value >
            </ property >
        </ bean >
    </ property >
    < property   name = "user" >
        < value > </ value >
    </ property >
    < property   name = "password" >
        < value >   </ value >
    </ property >
</ bean >


< bean   id = "dataSourceB"   class = "org.enhydra.jdbc.pool.StandardXAPoolDataSource"   destroy-method = "shutdown" >
    < property   name = "dataSource" >
        < bean   class = "org.enhydra.jdbc.standard.StandardXADataSource"   destroy-method = "shutdown" >
            < property   name = "transactionManager" >
                < ref   local = "jotm"   />
            </ property >
            < property   name = "driverName" >
                < value > oracle.jdbc.driver.OracleDriver </ value >
            </ property >
            < property   name = "url" >
                < value > jdbc:oracle:thin:@192.168.0.10:1521:B </ value >
            </ property >
        </ bean >
    </ property >
    < property   name = "user" >
        < value >   </ value >
    </ property >
    < property   name = "password" >
        < value >   </ value >
    </ property >
</ bean >

       3、定义sessionFactory

xml 代码

< bean   id = "sessionFactoryA"   class = "org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
    < property   name = "dataSource" >
        < ref   local = "dataSourceA"   />
    </ property >
    < property   name = "mappingDirectoryLocations" >
        < list >
            < value > classpath:/org/testa/hibernate/model/ </ value >
        </ list >
    </ property >
    < property   name = "hibernateProperties" >
        < props >
            < prop   key = "hibernate.dialect" > org.hibernate.dialect.Oracle9Dialect </ prop >
            < prop   key = "hibernate.show_sql" > true </ prop >
            < prop   key = "hibernate.jdbc.batch_size" > 50 </ prop >
            < prop   key = "hibernate.cache.use_query_cache" > true </ prop >
            < prop   key = "hibernate.cache.provider_class" > org.hibernate.cache.EhCacheProvider </ prop >
        </ props >
    </ property >
    < property   name = "jtaTransactionManager" >
        < ref   bean = "jotm"   />
    </ property >
    < property   name = "lobHandler"   ref = "lobHandler" />
</ bean >

< bean   id = "sessionFactoryB"   class = "org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
    < property   name = "dataSource" >
        < ref   local = "dataSourceB"   />
    </ property >
    < property   name = "mappingDirectoryLocations" >
        < list >
            < value > classpath:/org/testb/hibernate/model/ </ value >
        </ list >
    </ property >
    < property   name = "hibernateProperties" >
        < props >
            < prop   key = "hibernate.dialect" > org.hibernate.dialect.Oracle9Dialect </ prop >
            < prop   key = "hibernate.show_sql" > true </ prop >
            < prop   key = "hibernate.jdbc.batch_size" > 50 </ prop >
            < prop   key = "hibernate.cache.use_query_cache" > true </ prop >
            < prop   key = "hibernate.cache.provider_class" > org.hibernate.cache.EhCacheProvider </ prop >
        </ props >
    </ property >
    < property   name = "jtaTransactionManager" >
        < ref   bean = "jotm"   />
    </ property >
    < property   name = "lobHandler"   ref = "lobHandler" />
</ bean >

       4、事务管理配置

xml 代码

< bean   id = "myTransactionManager"
    class = "org.springframework.transaction.jta.JtaTransactionManager" >
    < property   name = "userTransaction" >
        < ref   local = "jotm"   />
    </ property >
</ bean >

       5、dao的配置

xml 代码

< bean   id = "testADaoTarget"   class = "org.testa.hibernate.dao.impl.TestADAO" >
< property   name = "sessionFactory" >
  < ref   bean = " sessionFactoryA " />
</ property >
</ bean >

< bean   id = "testADao"   class = "org.springframework.aop.framework.ProxyFactoryBean" >
< property   name = "proxyInterfaces" >
  < value > org.testA.hibernate.dao.ITestADAO </ value >
</ property >
< property   name = "interceptorNames" >
  < list >
    < value >  testADaoTarget  </ value >
  </ list >
</ property >
</ bean >

< bean   id = "testBDaoTarget"   class = "org.testa.hibernate.dao.impl.TestBDAO" >
< property   name = "sessionFactory" >
  < ref   bean = " sessionFactoryB " />
</ property >
</ bean >

< bean   id = "testBDao"   class = "org.springframework.aop.framework.ProxyFactoryBean" >
< property   name = "proxyInterfaces" >
  < value > org.testA.hibernate.dao.ITestBDAO </ value >
</ property >
< property   name = "interceptorNames" >
  < list >
    < value >  testBDaoTarget  </ value >
  </ list >
</ property >
</ bean >

四、注意事项
       1、spring已经整合了jotm，如果你使用spring自带的jotm，可能会提示某些类找不到，下载一个最新的jotm包，把lib目录里的所有jar包拷贝到lib目录。

      2、如果系统中使用jndi，则原有的jndi服务可能会无效，提示NameNotFoundException异常，此时在src目录下添加一个carol.properties的属性文件，添加如下内容：

xml 代码

 

# do not use CAROL JNDI wrapper
carol.start.jndi = false

# do not start a name server
carol.start.ns = false

# Naming Factory
carol.jndi.java.naming.factory.url.pkgs = org .apache.naming

 

 觉得这个地方有点问题啊

<bean id="testADao" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="proxyInterfaces">
<value>org.testA.hibernate.dao.ITestADAO</value>
</property>
<property name="interceptorNames">
<list>
<value> testADaoTarget </value>
</list>
</property>
</bean>

<property name="interceptorNames">里面应该是截取器列表，testADaoTarget应放在target属性吧

 

这里的dao只是个代理而已，如你所说，它的执行者最后是testADaoTarget
我的想法是，既然是分布式事务，不应该在dao层进行事务拦截，而应该提升到service层。

上面我把service层省略了，比如我这么写：

<bean id= "myTransactionManager"
    class = "org.springframework.transaction.jta.JtaTransactionManager" >
    <property name="userTransaction" >
        <ref local="jotm"  />
    </property>
</bean>

	<bean id="myTransactionManager"
		class="org.springframework.transaction.jta.JtaTransactionManager">
		<property name="userTransaction">
			<ref local="jotm" />
		</property>
	</bean>

<bean id= "transactionInterceptor"   class = "org.springframework.transaction.interceptor.TransactionInterceptor" >
  <property name="transactionManager" >
  <ref bean="myTransactionManager" />
  </property>

</bean>

	<bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
	  <property name="transactionManager">
	  <ref bean="myTransactionManager"/>
	  </property>

	</bean>

然后你在自己的service层的拦截器列表中添加这个transactionInterceptor拦截器就可以了，由它里边的jtom管理事务。
如：

    <bean id= "testManagerTarget"   class = "org.test.spring.service.impl.testServiceImpl" >
<property name="testADao" >
  <ref bean="testADao" />
</property>
<property name="testBDao" >
  <ref bean="testBDao" />
</property>
</bean>

  	<bean id="testManagerTarget" class="org.test.spring.service.impl.testServiceImpl">	
	<property name="testADao">
	  <ref bean="testADao"/>
	</property>  	
	<property name="testBDao">
	  <ref bean="testBDao"/>
	</property>
	</bean>

<bean id= "testService"   class = "org.springframework.aop.framework.ProxyFactoryBean" >
   <property name="proxyInterfaces" >
   <value>org.test.spring.service.ItestService</value>
   </property>
   <property name="interceptorNames" >
      <list>
         <idref bean="transactionInterceptor" />
      </list>
   </property>
</bean>