java - 为什么将客户端 JBoss 连接回收到远程队列后仍然抛出 SpyJMSExceptions？

Question

我下面的应用程序作为 JBoss 7.2.0 系统上的客户端与 JBoss 4.2.1 系统上的接收器 JNDI/JMS 通信。它创建一个发送队列和一个接收队列。使用这种配置，我们已经连续运行了 2 个月；双方均未作任何改动。本地客户端应用安装了 4.2.1 jbossall-client.jar 和 jnp-client.jars。

正常 Activity 后，我们开始收到 org.jboss.mq.SpyJMSException: Exiting on IOE; - 嵌套 throwable: (java.io.EOFException) at org.jboss.mq.SpyJMSException.getAsJMSException(SpyJMSException.java:72) 异常。

我们重新启动了 JBoss 7.2.0 而不做任何更改，当我们建立接收队列时，我们现在收到 org.jboss.mq.SpyJMSException: Cannot subscribe to this Destination: ; {...} 原因:java.io.EOFException 我们的代码在 QueueReceiver receiver = session.createReceiver(queue); 处抛出异常。在应用程序运行良好数天后，我们也会开始抛出同样的异常，但在多天的时间内没有任何 Activity 。

我们重新启动了 4.2.1 系统以查看是否是问题所在，但没有解决任何问题。 事实上，我们可以通过让两个系统正常连接，然后回收 4.2.1 系统来复制这种故障情况。一旦 4.2.1 系统关闭，错误就会开始抛出，而 7.2.0一旦 4.2.1 系统完全建立(即使它应该能够这样做)，系统仍然无法重新建立连接。

在 JBoss 中停止然后启动应用程序并不能解决此问题。重新启动 JBoss 有 20% 的机会解决此问题(在上面提到的强制故障情况下为 100% 的机会)。取消部署，然后重新部署应用程序通常可以解决此问题。

可能是什么原因造成的？

同样的 war 文件在我们的测试系统上运行良好，它具有相同的 JBoss 设置。使用相同代码从命令提示符通过测试应用程序与目标 JBoss 系统进行通信工作正常。

我怀疑 JBoss 7.2.0 本身存在问题，或者这可能是超时问题？如何检查或延长超时长度；这在客户端是可行的吗？即使超时，我在 start() 的其余部分重新连接之前调用了 stop() 方法，我仍然得到异常；在这种情况下，它不会是超时问题，因为超时会重置。

上下文值:

connectionFactoryName=ConnectionFactory
contextFactoryName=org.jnp.interfaces.NamingContextFactory
packagePrefixes=org.jboss.naming:org.jnp.interfaces
providerUrl=MYSERVER:1099

Java 代码:

private ContextContainer contextContainer = null;
private QueueConnection connection = null;
private QueueReceiver receiver = null;
private Queue sendQueue = null;
private Queue receiveQueue = null;
private String sendQueueName = null;
private String receiveQueueName = null;
private MessageHandler messageHandler = null;

protected synchronized void start() throws Exception {

    // NOTE: This position also has delay code (for pending multiple 
    // consecutive recycling requests), with an external method to 
    // reset the delay. It was removed for code clarity and has no 
    // effect on the issue being discussed.

    // Clear prior Connection
    stop();

    logger.info("Regenerating JMS for : " + this.getClass().getName());

    Context context = this.contextContainer.getContext();

    logger.info("Looking up factory : " + contextContainer.getConnectionFactoryName());

    QueueConnectionFactory connectionFactory = (QueueConnectionFactory)context.lookup(contextContainer.getConnectionFactoryName()); 

    // ESTABLISH SEND MESSAGE QUEUE
    logger.info("Looking up send queue : " + sendQueueName);

    sendQueue = (Queue)context.lookup(sendQueueName); 

    logger.info("Send Queue string : " + sendQueue);
    logger.info("Send Queue name   : " + sendQueue.getQueueName());
    logger.info("Creating Queue Connection");

    connection = connectionFactory.createQueueConnection();

    logger.info("Setting Exception Listener");

    connection.setExceptionListener(new ExceptionListener() {

        public void onException(JMSException ex) {

            logger.error("JMS Exception received on QueueConnection", ex);

            start();
        }
    });

    // ESTABLISH RECEIVE MESSAGE QUEUE
    logger.info("Looking up receive queue : " + receiveQueueName);

    receiveQueue = (Queue)context.lookup(receiveQueueName); 

    logger.info("Receive Queue string : " + receiveQueue);
    logger.info("Receive Queue name   : " + receiveQueue.getQueueName());
    logger.info("Creating JMS Session for Receiving");

    QueueSession session = connection.createQueueSession(false, Session.CLIENT_ACKNOWLEDGE);

    logger.info("Created Session " + session);      
    logger.info("Creating JMS Receiver for Queue \"" + receiveQueue.getQueueName() + "\"");

    // THIS IS THE LINE WHERE THE EXCEPTION IS THROWN!!!
    receiver = session.createReceiver(receiveQueue);

    logger.info("Setting Message Listener");

    receiver.setMessageListener(new MessageListener() {

        public void onMessage(Message message) {

            try {

                if (message instanceof ObjectMessage) {

                    Object obj = ((ObjectMessage) message).getObject();

                    //  UNRELATED METHOD FOR HANDLING THE MESSAGE
                    handleMessage(obj);

                } else {

                    throw new Exception("Received message of unexpected type " + message.getJMSType() + ", was expecting ObjectMessage");
                }

            } catch (Exception ex) {

                logger.error("Error processing incoming message.", ex);

            } finally {

                try {

                    message.acknowledge();
                    logger.info("Acknowledged message.");

                } catch (Exception ex) {

                    logger.error("Unable to acknowledge message.", ex);
                }
            }
        }
    });

    logger.info("Starting Queue Connection");

    connection.start();

    logger.info("Started Queue Connection");
}   

/**
 * Extinguish the existing connection.
 */
public synchronized void stop() {

    if (receiver != null) {

        try {

            logger.info("Nullifying Receiver Listener");
            receiver.setMessageListener(null);
            logger.info("Nullified Receiver Listener");

        } catch(Exception ex) {

            logger.warn("Exception nullifying Receiver Listener", ex);
        }

        try {

            logger.info("Closing Receiver");
            receiver.close();
            logger.info("Closed Receiver");

        } catch(Exception ex) {

            logger.warn("Exception closing Receiver", ex);

        } finally {

            receiver = null;
        }           
    }

    if (connection != null) {

        try {

            logger.info("Nullifying Exception Listener");
            connection.setExceptionListener(null);
            logger.info("Nullified Exception Listener");

        } catch (Exception ex) {

            logger.warn("Exception nullifying Exception Listener", ex);
        }

        try {

            logger.info("Stopping Queue Connection");
            connection.stop();
            logger.info("Stopped Queue Connection");

        } catch (Exception ex) {

            logger.warn("Exception stopping Queue Connection", ex);
        }

        try {

            logger.info("Closing Queue Connection");
            connection.close();
            logger.info("Closed Queue Connection");

        } catch (Exception ex) {

            logger.warn("Exception closing Queue Connection", ex);

        } finally {

            connection = null;
        }
    }
}

日志输出:

Setting Context Factory Class: org.jnp.interfaces.NamingContextFactory
Setting Package Prefixes: org.jboss.naming:org.jnp.interfaces
Setting Provider URL: MYSERVER:1099
Generating JMS for : MYPACKAGE.ConnectionHandler
Looking up factory : ConnectionFactory
Looking up send queue : queue/sendQueue
Send Queue string : QUEUE.sendQueue
Send Queue name   : sendQueue
Creating Queue Connection
Setting Exception Listener
Looking up receive queue : queue/receiveQueue
Receive Queue string : QUEUE.receiveQueue
Receive Queue name   : receiveQueue
Creating JMS Session for Receiving
Created Session SpySession@1903462020[tx=false ack=CLIENT txid=null RUNNING connection=Connection@1963631553[token=ConnectionToken:ID:273725/9966a9625bb094d33a37f72db71b3bb9 rcvstate=STOPPED]]
Creating JMS Receiver for Queue "receiveQueue"
Exception caught during initialization.
org.jboss.mq.SpyJMSException: Cannot subscribe to this Destination: ; - nested throwable: (java.io.EOFException)

正常 Activity 后的异常跟踪:

JMS Exception received on QueueConnection
org.jboss.mq.SpyJMSException: Exiting on IOE; - nested throwable: (java.io.EOFException)
at org.jboss.mq.SpyJMSException.getAsJMSException(SpyJMSException.java:72)
at org.jboss.mq.Connection.asynchFailure(Connection.java:423)
at org.jboss.mq.il.uil2.UILClientILService.asynchFailure(UILClientILService.java:174)
at org.jboss.mq.il.uil2.SocketManager$ReadTask.handleStop(SocketManager.java:439)
at org.jboss.mq.il.uil2.SocketManager$ReadTask.run(SocketManager.java:371)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.readByte(ObjectInputStream.java:2766)
at java.io.ObjectInputStream.readByte(ObjectInputStream.java:916)
at org.jboss.mq.il.uil2.SocketManager$ReadTask.run(SocketManager.java:316)
... 1 more

重启后的异常跟踪:

org.jboss.mq.SpyJMSException: Cannot subscribe to this Destination: ; - nested throwable: (java.io.EOFException)
    at org.jboss.mq.SpyJMSException.getAsJMSException(SpyJMSException.java:72)
    at org.jboss.mq.SpyJMSException.rethrowAsJMSException(SpyJMSException.java:57)
    at org.jboss.mq.Connection.addConsumer(Connection.java:800)
    at org.jboss.mq.SpySession.addConsumer(SpySession.java:947)
    at org.jboss.mq.SpySession.createReceiver(SpySession.java:658)
    at org.jboss.mq.SpyQueueSession.createReceiver(SpyQueueSession.java)
    at org.jboss.mq.SpySession.createReceiver(SpySession.java:647)
    at org.jboss.mq.SpyQueueSession.createReceiver(SpyQueueSession.java)
    at MYPACKAGE.ConnectionHandler.start(ConnectionHandler.java:144)
    at MYPACKAGE.ConnectionHandler.initialize(ConnectionHandler.java:60)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1414)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1375)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3339)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3777)
    at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:156)
    at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:60)
    at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:93)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
    at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: java.io.EOFException
    at java.io.ObjectInputStream$BlockDataInputStream.readByte(ObjectInputStream.java:2766)
    at java.io.ObjectInputStream.readByte(ObjectInputStream.java:916)
    at org.jboss.mq.il.uil2.SocketManager$ReadTask.run(SocketManager.java:316)
    at java.lang.Thread.run(Thread.java:744)

Answer 1

如问题中所述，JBoss 4.2.1 服务器已升级到 7.1.1 Final。升级已解决该问题，客户端现在可以正常工作，但不幸的是，此解决方案无法解释问题。