遠程JMX連接和通知問題

Question

我試圖從與UsageThreshold相關的Java API文檔（http://download.oracle.com/javase/1.5.0/docs/api/java/lang/management/MemoryPoolMXBean.html#Notification）中關注一個示例內存池Bean和通知的屬性。 我的意圖是每次游泳池克服門檻時都要做點什么。 這是示例代碼：

MemoryPoolMXBean remoteOldGenMemoryPool =
    ManagementFactory.newPlatformMXBeanProxy(
        jmxServer,
        "java.lang:type=MemoryPool,name=PS Old Gen",
        MemoryPoolMXBean.class);


class MyListener implements javax.management.NotificationListener {
    public void handleNotification(Notification notification, Object handback)  {
      String notifType = notification.getType();
      if (notifType.equals(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED)) {
        // Do Something
        println "Threshold passed";
      }
    }
  }

// Register MyListener with MemoryMXBean
MemoryMXBean remoteMemory =
      ManagementFactory.newPlatformMXBeanProxy(
          jmxServer,
          ManagementFactory.MEMORY_MXBEAN_NAME,
          MemoryMXBean.class);

NotificationEmitter emitter = remoteMemory as NotificationEmitter;
MyListener listener = new MyListener();
emitter.addNotificationListener(listener, null, null);

remoteOldGenMemoryPool.setUsageThreshold 500000000;

當我執行代碼並連接到我的JVM時，我可以看到以下內容：

Threshold passed
02-Feb-2011 16:30:00 ClientCommunicatorAdmin restart
WARNING: Failed to restart: java.io.IOException: Failed to get a RMI stub: javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is: 
    java.net.SocketException: Connection reset]
02-Feb-2011 16:30:03 RMIConnector RMIClientCommunicatorAdmin-doStop
WARNING: Failed to call the method close():java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is: 
    java.net.SocketException: Connection reset
02-Feb-2011 16:30:03 ClientCommunicatorAdmin Checker-run
WARNING: Failed to check connection: java.net.SocketException: Connection reset
02-Feb-2011 16:30:03 ClientCommunicatorAdmin Checker-run
WARNING: stopping

由於某種原因（我還不了解）代碼正在嘗試重新啟動與JVM的連接。 任何想法為什么會發生這種情況或如何預防？ 我做錯了嗎？

謝謝

Answer 1

也許你可以在jmx環境中添加一個變量，如下所示：m.put（“jmx.remote.x.client.connection.check.period”，0L）;

但是，我所遇到的與此略有不同。 你可以看到： http ： //chainhou.iteye.com/blog/1906688 。