Question

我需要将JTA事务与send JMS消息同步 - 在客户端JTA事务提交后应该激活MDB。这应该在使用XAConnectionFactory时可能，但在我的示例中不起作用。

示例场景：

Web服务客户端发送代码= 0
mdb接收消息并打印：START：代码（NEW JTA TRANSACTION）
mdb增加代码并打印：发送：％code + 1％
mdb使用新代码值发送消息
mdb sleep
mdb print：END code
mdb finish（TRANSACTION COMMIT）

场景重复直到代码＆lt; 10.我期待结果：

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

但目前我得到了：

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

我的代码：

Webservice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);
        }
    }
}

我做错了什么？

Answer 1

我发现MDB上没有事务上下文!!!

当我通过调用

检查交易ID时

weblogic.transaction.TxHelper.getTransactionId()

收到null，并在调用messageDrivenContext.getRollbackOnly（）时获得异常

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

原因是注释

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)

删除后或更改

@TransactionAttribute(TransactionAttributeType.REQUIRED)

一切正常。

：）

在提交JTA事务之前对JMS消息进行MDB激活

1 个答案: