InvocationFailureException when invoking MBean using MBeanProxyFactoryBean

**brad_uk** · Jan 9th, 2010, 11:26 AM

Hi all,

I'm trying to access an MBean in JBoss (same VM) using the Spring JMX proxy MBeanProxyFactoryBean. Initially I was getting my data directly from the MBean method which was working fine. To clean up the client access I refactored the MBean to make it return another bean which groups the methods I use to get my data.

My problem is that its not liking the bean instance coming back from the MBean invocation compared to the proxyInterface i told it about:

Code:

2010-01-09 19:04:03,828 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/test].[SpringDispatcherServlet]] (http-127.0.0.1-8080-1) Servlet.service() for servlet SpringDispatcherServlet threw exception
org.springframework.jmx.access.InvocationFailureException: Incompatible result value [test.jmx.TestContextImpl@b6f61c] for target type [test.jmx.TestContextImpl]
	at org.springframework.jmx.access.MBeanClientInterceptor.convertResultValueIfNecessary(MBeanClientInterceptor.java:545)
	at org.springframework.jmx.access.MBeanClientInterceptor.doInvoke(MBeanClientInterceptor.java:411)
	at org.springframework.jmx.access.MBeanClientInterceptor.invoke(MBeanClientInterceptor.java:348)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
	at $Proxy311.getTestContext(Unknown Source)
	at test.web.TestContextProxy.fireEvent(TestContextProxy.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:328)
	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:273)
	at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59)
	at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
	at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	at org.springframework.binding.expression.el.BindingValueExpression.getValue(BindingValueExpression.java:54)
	at org.springframework.binding.expression.el.ELExpression.getValue(ELExpression.java:54)
	at org.springframework.webflow.action.EvaluateAction.doExecute(EvaluateAction.java:77)
	at org.springframework.webflow.action.AbstractAction.execute(AbstractAction.java:188)
	at org.springframework.webflow.execution.AnnotatedAction.execute(AnnotatedAction.java:145)
	at org.springframework.webflow.execution.ActionExecutor.execute(ActionExecutor.java:51)
	at org.springframework.webflow.engine.support.ActionTransitionCriteria.test(ActionTransitionCriteria.java:82)
	at org.springframework.webflow.engine.support.TransitionCriteriaChain.test(TransitionCriteriaChain.java:71)
	at org.springframework.webflow.engine.Transition.canExecute(Transition.java:195)
	at org.springframework.webflow.engine.Transition.execute(Transition.java:211)
	at org.springframework.webflow.engine.impl.FlowExecutionImpl.execute(FlowExecutionImpl.java:391)
	at org.springframework.webflow.engine.impl.RequestControlContextImpl.execute(RequestControlContextImpl.java:214)
	at org.springframework.webflow.engine.TransitionableState.handleEvent(TransitionableState.java:119)
	at org.springframework.webflow.engine.Flow.handleEvent(Flow.java:555)
	at org.springframework.webflow.engine.impl.FlowExecutionImpl.handleEvent(FlowExecutionImpl.java:386)
	at org.springframework.webflow.engine.impl.RequestControlContextImpl.handleEvent(RequestControlContextImpl.java:210)
	at org.springframework.webflow.engine.ViewState.handleEvent(ViewState.java:230)
	at org.springframework.webflow.engine.ViewState.resume(ViewState.java:196)
	at org.springframework.webflow.engine.Flow.resume(Flow.java:545)
	at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:259)
	at org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:163)
	at org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:563)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Thread.java:619)

I'm not sure I completely understand what is wrong there. Is it because its getting an object reference rather that the object itself?

I can change it back to how it was before but it was a bit messy and I'd prefer to do it this way. Can anyone advise me if this is do-able and if so, where am I going wrong?

I'm using Spring 3.0.0.RELEASE.

Thanks in advance,
Brad.

**Marten Deinum** · Jan 9th, 2010, 12:29 PM

Please use [ code][/code ] tags when posting code/xml/stacktraces that way they are more readable!!!

Can you post the full stacktrace, you only posted part of it.

**brad_uk** · Jan 9th, 2010, 01:16 PM

Hi Marten,

original post edited as requested.

To give further context, the code is called in a proxy class which is invoked from en EL expression in WebFlow. The invoking code in the local class looks like this:

Code:

		//get the proxy object from MBean
                TestContext ctx = this.mbean.getTestContext(CLIENT_NAME);
                //invoke method on proxy
		ctx.fireEvent(eventOriginator, subComponent, eventName, eventValue, id);

Hope that helps.

**brad_uk** · Jan 9th, 2010, 01:30 PM

I should probably mention that the object I'm getting from the MBean isn't just an aggregation of data, it references other beans which perform application logic and database access.

I'm guessing this is the cause, i.e. it would work if it was a Serializable data aggregation but not as a fully resourced application component?

**emilb** · Jan 20th, 2010, 02:03 AM

Hi,

I'm getting the same type of error trying to access a remote MBean (Runtime) invoking List<String> getInputArguments().

Spring config:

Code:

<bean id="portalClientConnector"
      class="org.springframework.jmx.support.MBeanServerConnectionFactoryBean">
	  <property name="serviceUrl" value="service:jmx:rmi://localhost/jndi/rmi://localhost:1099/myconnector"/>
</bean>

<bean id="portalRunTimeProxy" class="org.springframework.jmx.access.MBeanProxyFactoryBean">
	  <property name="objectName" value="java.lang:type=Runtime"/>
	  <property name="proxyInterface" value="java.lang.management.RuntimeMXBean"/>
	  <property name="server" ref="portalClientConnector"/>
</bean>

Running the following:

Code:

for (String s : portalRunTimeProxy.getInputArguments()) {
	System.out.println(s);
}

Yeilds:

Code:

VARNING: Incompatible result value [[Ljava.lang.String;@845058] for target type [java.util.List]
org.springframework.jmx.access.InvocationFailureException: Incompatible result value [[Ljava.lang.String;@845058] for target type [java.util.List]
	at org.springframework.jmx.access.MBeanClientInterceptor.convertResultValueIfNecessary(MBeanClientInterceptor.java:545)
	at org.springframework.jmx.access.MBeanClientInterceptor.doInvoke(MBeanClientInterceptor.java:411)
	at org.springframework.jmx.access.MBeanClientInterceptor.invoke(MBeanClientInterceptor.java:348)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
	at $Proxy68.getInputArguments(Unknown Source)
	at com.tdc.tdcserviceonline.web.admin.controller.portal.PortalStatusController.doGet(PortalStatusController.java:108)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:710)
	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:167)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	at com.tdc.web.servlet.WebDispatcherServlet.doService(WebDispatcherServlet.java:46)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:530)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1216)
	at com.tdc.web.servlet.HeaderFilter.doFilter(HeaderFilter.java:34)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:344)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:110)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:98)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:95)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:79)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:55)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:36)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:188)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:106)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:150)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:425)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:494)
	at org.eclipse.jetty.server.session.SessionHandler.handle(SessionHandler.java:182)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:933)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:362)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:867)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:245)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)
	at org.eclipse.jetty.server.Server.handle(Server.java:334)
	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:559)
	at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:992)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:541)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:203)
	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:406)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:462)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
	at java.lang.Thread.run(Thread.java:619)

It seems that MBeanClientInterceptor.convertResultValueIfNecessa ry doesn't understand convert the result.

Has anyone seen this, any ideas for a fix?

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