JMX “javax.management.NotCompliantMBeanException” 异常解决

原文章：http://lovespss.blog.51cto.com/1907593/616403

昨天同事在JBoss中部署MBean时一直报错：

Caused by: javax.management.NotCompliantMBeanException: Class does not expose a management interface: java.lang.Object

      at org.jboss.mx.metadata.MBeanCapability.of(MBeanCapability.java:102)

      at org.jboss.mx.metadata.MBeanCapability.of(MBeanCapability.java:100)

      at org.jboss.mx.metadata.MBeanCapability.of(MBeanCapability.java:100)

      at org.jboss.mx.metadata.MBeanCapability.of(MBeanCapability.java:100)

      at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:182)

      at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)

      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

      at java.lang.reflect.Method.invoke(Method.java:597)

      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)

      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)

      at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)

      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)

      at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)

      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)

      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)

      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)

      at org.jboss.mx.server.MBeanServerImpl$3.run(MBeanServerImpl.java:1422)

      at java.security.AccessController.doPrivileged(Native Method)

      at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1417)

      at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1350)

      at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:345)

      at org.jboss.system.ServiceCreator.install(ServiceCreator.java:157)

      at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigurator.java:451)

      at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:171)

      ... 81 more

几个人查了良久，试了能想到的一切方法，仍不得解。网上Google，Interface和实现必须放在同一个包内，改，再部署，仍报错。同事提了一句是不是要改成Sar包，改，再部署，仍旧报错。MBean命名有要求，实现类名必须是接口名去掉MBean，改，再部署，还是错措错！！！最后大家都已头昏眼花，不得不暂时作罢，次日再战。

今日一早起来，略读了《Java Management Extension》，书中 2.2.1节 Describing the Management Interface 正好讲到了NotCompliantMBeanException。遂一一对照，检查代码。

2.2.1.1 Pattern #1: Defining, naming, and implementing the MBean interface 
接口必须定义成Public的。

public interface QueueMBean { 
// management interface goes here. . . 
}

实现类必须implements 接口的同时，名字也是大有讲究。假如接口名叫 XYZMBean ，那么实现名就必须一定是XYZ，而且是大小写敏感的。真是差之毫厘谬以NotCompliant。

public class Queue implements QueueMBean { 
// implementation of QueueMBean 
// and other stuff here. . . 
}

再仔细一瞅同事的代码，顿悟。接口名去掉MBean后和实现类名差那么一个字母，怎么昨天我们三个人都没有看出来呢？把名字一改，再部署，OK了。