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threw an unexpected exception: java.lang.reflect.InvocationTargetException

I am working on GWT-Hibernate application, my application works perfectly on integrated GWT environment and even on external server tomcat. I need to deploy my application on JBoss V 6.0. I am able to successfully deploy my application on JBoss and able to run until on point of execution. At particular button click application threw an unexpected exception: java.lang.reflect.InvocationTargetException

Normally "java.lang.reflect.InvocationTargetException" occurs when java compiler finds 2 different classes with same name in 2 different packages. when you are importing both classes at a time and when you are trying to create object of that class it throws "java.lang.reflect.InvocationTargetException" exception.

Now I am not able to figure out where compiler is finds my two different class! Is there any method available so that I can know the exact location (i.e Physical path) where it finds the two different path, So that I can remove the bad one.

Any help would be appreciated.

Thanking You,

Regards,

EDIT : 

ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/myProj]] (http-127.0.0.1-8080-4) Exception while dispatching incoming RPC call: com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public com.proj.client.beans.domain.common.transaction.Document com.proj.server.actions.configuration.DocumentAction.saveDocument(com.proj.client.beans.domain.common.transaction.Document,java.lang.Long)' threw an unexpected exception: java.lang.reflect.InvocationTargetException
    at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:378) [:]
    at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:361) [:]
    at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:329) [:]
    at com.googlcode.strut2gwtplugin.interceptor.GWTServlet.processCall(GWTServlet.java:138) [:]
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:224) [:]
    at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) [:]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [:1.0.0.Final]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [:1.0.0.Final]
    at com.googlcode.strut2gwtplugin.interceptor.GWTInterceptor.intercept(GWTInterceptor.java:49) [:]
    at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224) [:]
    at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223) [:]
    at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455) [:]
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221) [:]
    at com.proj.server.LoginInterceptor.intercept(LoginInterceptor.java:37) [:]
    at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224) [:]
    at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223) [:]
    at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455) [:]
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221) [:]
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:50) [:]
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:504) [:]
    at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:422) [:]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) [:6.0.0.Final]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.0.0.Final]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [:6.0.0.Final]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) [:6.0.0.Final]
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:181) [:6.0.0.Final]
    at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285) [:1.1.0.Final]
    at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261) [:1.1.0.Final]
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:88) [:6.0.0.Final]
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:100) [:6.0.0.Final]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) [:6.0.0.Final]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [:6.0.0.Final]
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) [:6.0.0.Final]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [:6.0.0.Final]
    at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:53) [:6.0.0.Final]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) [:6.0.0.Final]
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [:6.0.0.Final]
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:654) [:6.0.0.Final]
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:951) [:6.0.0.Final]
    at java.lang.Thread.run(Thread.java:662) [:1.6.0_23]
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_23]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_23]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_23]
    at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_23]
    at com.googlcode.strut2gwtplugin.interceptor.GWTServlet.processCall(GWTServlet.java:127) [:]
    ... 36 more
Caused by: java.lang.NullPointerException
    at com.proj.server.actions.configuration.DocumentAction.saveDocument(DocumentAction.java:161) [:]
    ... 41 more
Solution

  • Try to deploy the code on jboss-5.0.0.GA

    Hope it helps