4 Replies Latest reply on Jan 27, 2007 4:05 PM by pavel.genevski

Creating a MBean

jactor Jul 2, 2006 11:47 AM

I am trying to create a mbean, but I get a strange exception

org.jboss.deployment.DeploymentException: Class does not expose a management interface: java.lang.Object; - nested throwable: (javax.management.NotCompliantMBeanException: Class does not expose a management interface: java.lang.Object)
 at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:178)
 at org.jboss.system.ServiceController.install(ServiceController.java:215)
 at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)

I am using the code presented in the example from the wiki (http://wiki.jboss.org/wiki/Wiki.jsp?page=ExampleHelloWorldService), using the general extention of the interface (not extends ServiceMBean).

What might be wrong? I do not implement a management interface? I implement a interface containing the start() and stop() methods (like the example)

1. Re: Creating a MBean

jactor Jul 3, 2006 4:26 AM (in response to jactor)

In frustration of not be able to create a "general" jmx bean, I tried extending the ServiceMBeanSupport explained in
http://wiki.jboss.org/wiki/Wiki.jsp?page=ServiceMBeanSupport.

However; the same error occurs:

org.jboss.deployment.DeploymentException: Class does not expose a management interface: java.lang.Object; - nested throwable: (javax.management.NotCompliantMBeanException: Class does not expose a management interface: java.lang.Object)
 at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:178)
 at org.jboss.system.ServiceController.install(ServiceController.java:215)
 at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
....
Caused by: javax.management.NotCompliantMBeanException: Class does not expose a management interface: java.lang.Object
 at org.jboss.mx.metadata.MBeanCapability.of(MBeanCapability.java:88)

Please help me!!!

2. Re: Creating a MBean

jaikiran Jul 4, 2006 1:55 AM (in response to jactor)

Post your MBean code and the *-service.xml file.
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3. Re: Creating a MBean

jactor Jul 4, 2006 2:52 AM (in response to jactor)

I just figured it out. I do not use the naming standard on MBeans (If the source class is named Serious, then the interface must be named SeriousMBean).

A deep dive into the world of MBeans can be found here:
http://www.oreilly.com/catalog/javamngext/chapter/ch02.pdf
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4. Re: Creating a MBean

pavel.genevski Jan 27, 2007 4:05 PM (in response to jactor)

This exception might occur if the MBean interface and the implementing class reside in different packages. I am not sure if it is JBoss specific issue or it is according to the JMX spec.
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