2011-12-07 52 views
3

我需要将JTA事务与发送JMS消息同步 - 应在客户端JTA事务提交后激活MDB。 这应该尽可能使用XAConnectionFactory,但在我的示例中不起作用。在提交JTA事务之前为JMS消息激活MDB

示例方案:

  • Web服务客户端发送消息,代码= 0
  • MDB接收消息并打印:START:代码(NEW JTA TRANSACTION)
  • MDB增量代码和打印:SEND: %代码+ 1%
  • MDB发送messag与新代码值
  • MDB睡眠
  • MDB打印:END代码
  • MDB完成(事务提交)

的情况是重复,直到代码< 10.我期待的结果是:

START: 0 
SEND: 1 
END: 0 
START: 1 
SEND: 2 
END: 1 
START: 2 
SEND: 3 
END: 2 
etc.. 

,但目前我得到:

... 
START: 4 
SEND: 5 
END: 3 
START: 5 
SEND: 6 
END: 4 
START: 6 
SEND: 7 
END: 5 
END: 6 

我的代码:

  • web服务客户端

    @WebMethod 
    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) 
    public void publish() { 
        TestQueueUtil.sendToQueue(0); 
    } 
    
  • TestQueueUtil(JMS客户端)

    public static void sendToQueue(Integer code) { 
        InitialContext initialContext; 
        XAQueueConnection queueConnection = null; 
        XAQueueSession queueSession = null; 
    
        try { 
        Hashtable env = new Hashtable(); 
        env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory"); 
        initialContext = new InitialContext(env); 
        XAConnectionFactory queueConnectionFactory = (XAConnectionFactory) initialContext.lookup("jms/dsk/ConnectionFactoryXA"); 
    
        queueConnection = (XAQueueConnection) queueConnectionFactory.createXAConnection(); 
        queueConnection.start(); 
    
        queueSession = queueConnection.createXAQueueSession(); 
        Queue queue = (Queue) initialContext.lookup("jms/dsk/TestQueue"); 
    
        //QueueSender sender = 
        MessageProducer producer = queueSession.createProducer(queue); 
        Message jmsMessage = queueSession.createMessage(); 
    
        jmsMessage.setIntProperty("code", code); 
        producer.send(jmsMessage); 
        producer.close(); 
        queueConnection.stop(); 
    
    } catch (Exception e) { 
        throw new RuntimeException("sendToQueue", e); 
    } finally { 
        if (queueSession != null) { 
         try { 
          queueSession.close(); 
         } catch (Exception e) { 
          //ignore 
         } 
        } 
        if (queueConnection != null) { 
         try { 
          queueConnection.close(); 
         } catch (Exception e) { 
          //ignore 
         } 
        } 
        } 
    
    } 
    
  • TestQueueMDB

    @MessageDriven(mappedName = "jms/dsk/TestQueue", activationConfig = { 
         @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"), 
         @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue") 
    }) 
    public class TestQueueMDB implements MessageListener { 
    
        @Resource 
        protected MessageDrivenContext messageDrivenContext; 
    
        @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) 
        public void onMessage(Message message) { 
         Integer code = null; 
         try { 
    
          code = message.getIntProperty("code"); 
          System.out.println("START: " + code); 
          if (code < 10) { 
           Integer newcode = code + 1; 
           System.out.println("SEND: " + newcode); 
           TestQueueUtil.sendToQueue(newcode); 
           Thread.sleep(2000); 
          } 
         } catch (Exception e) { 
          e.printStackTrace(); 
         } finally { 
          System.out.println("END: " + code); 
         } 
        } 
    } 
    

我做什么了?

回答

4

我发现我没有在MDB上的事务上下文!

当我通过调用

weblogic.transaction.TxHelper.getTransactionId() 

收到空检查事务ID,当调用messageDrivenContext.getRollbackOnly()获取异常

java.lang.IllegalStateException: [EJB:010156]Illegal attempt to call EJBContext.getRollbackOnly() from an EJB that was not participating in a transaction. 

原因,这是注释

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) 

将其删除或更改后

@TransactionAttribute(TransactionAttributeType.REQUIRED) 

所有工作正常。

:)

+0

这些都是很奇怪的症状。确实,MDB只允许NOT_SUPPORTED或REQUIRED事务注释,但我宁愿期望在部署时抛出异常,而不是默默地忽略REQUIRES_NEW。即便如此,+1有趣的后续行动。 – MaDa