[英]Problem with remote JMX connection and Notifications
我试图从与UsageThreshold相关的Java API文档(http://download.oracle.com/javase/1.5.0/docs/api/java/lang/management/MemoryPoolMXBean.html#Notification)中关注一个示例内存池Bean和通知的属性。 我的意图是每次游泳池克服门槛时都要做点什么。 这是示例代码:
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;
当我执行代码并连接到我的JVM时,我可以看到以下内容:
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
由于某种原因(我还不了解)代码正在尝试重新启动与JVM的连接。 任何想法为什么会发生这种情况或如何预防? 我做错了吗?
谢谢
也许你可以在jmx环境中添加一个变量,如下所示:m.put(“jmx.remote.x.client.connection.check.period”,0L);
但是,我所遇到的与此略有不同。 你可以看到: http : //chainhou.iteye.com/blog/1906688 。
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