时,我得到一个NullPointerException飘飞在我的嵌入式码头应用:的NullPointerException嵌入式码头使用JMX
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.jetty.jmx.ObjectMBean.getAttribute(ObjectMBean.java:349)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1445)
...
Caused by: java.lang.NullPointerException
at org.eclipse.jetty.server.handler.ContextHandler.isShutdown(ContextHandler.java:682)
... 28 more
我已经设置了JMX这样的:
Server server = new Server();
MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
MBeanContainer mbContainer = new MBeanContainer(mBeanServer);
server.addBean(mbContainer);
出现这种情况随机(并不总是)在服务器启动时,并且只有当我的Prometheous JMX Exporter在同一台机器上运行时,最有可能在Jetty尚未准备好处理连接的阶段连接到JMX服务器。
任何想法如何解决这个问题?
码头的哪个版本是这个。 ? –