4 Replies Latest reply: Dec 16, 2005 12:09 PM by for Jbpm RSS

    Servlet.service() for servlet jsp threw exception

    for Jbpm Novice

      Hi,

      I was trying to deploy my processarchive which I couldn't deploy with Eclipse IDE-> move curser to your par process ->right click -> select deploy process archieve.

      So I followed this post
      http://www.jboss.com/index.html?module=bb&op=viewtopic&t=71043
      and could successfully deploy my process.

      this activity is logged in my log as :

      16:12:30,662 DEBUG [DeployServlet] deploying archive file:///JBPM_HOME/build/ECSDemo4.par
      16:12:30,847 DEBUG [FileDefinition] preparing file 'processimage.jpg' for storage in the database
      16:12:30,852 DEBUG [FileDefinition] preparing file 'gpd.xml' for storage in the database
      16:12:30,864 DEBUG [ProcessArchiveDeployer] starting transaction to deploy process ProcessDefinition(ECSDemo4)
      16:12:31,486 DEBUG [ProcessArchiveDeployer] flushing...
      16:12:31,795 DEBUG [ProcessArchiveDeployer] committing transaction to deploy process ProcessDefinition(ECSDemo4)
      16:12:31,857 DEBUG [PersistenceContext] committing transaction
      


      But when I log in and click on my process to start new process execution I get error as
      16:14:00,459 DEBUG [GraphElement] event 'process-start' on 'ProcessDefinition(ECSDemo4)' for 'Token(/)'
      16:14:00,466 DEBUG [GraphElement] event 'task-create' on 'Task(Start)' for 'Token(/)'
      16:14:00,481 DEBUG [GraphElement] event 'task-assign' on 'Task(Start)' for 'Token(/)'
      16:14:00,516 DEBUG [TaskBean] initialized availableTransitions null
      16:14:01,580 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
      java.lang.NullPointerException
       at org.jbpm.webapp.tag.ProcessImageTag.extractBoxConstraint(ProcessImageTag.java:98)
       at org.jbpm.webapp.tag.ProcessImageTag.writeTable(ProcessImageTag.java:69)
       at org.jbpm.webapp.tag.ProcessImageTag.doEndTag(ProcessImageTag.java:42)
       at org.apache.jsp.task_jsp._jspx_meth_jbpm_processimage_0(org.apache.jsp.task_jsp:722)
       at org.apache.jsp.task_jsp._jspx_meth_f_view_0(org.apache.jsp.task_jsp:168)
       at org.apache.jsp.task_jsp._jspService(org.apache.jsp.task_jsp:116)
       at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
       at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
       at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
       at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
       at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
       at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
       at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
       at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
       at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:25)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.PersistenceFilter.doFilter(PersistenceFilter.java:28)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.ContextFilter.doFilter(ContextFilter.java:19)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:38)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
       at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
       at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
       at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
       at java.lang.Thread.run(Thread.java:595)
      16:14:01,588 DEBUG [PersistenceContext] rolling back transaction
      16:14:01,606 ERROR [[FacesServlet]] Servlet.service() for servlet FacesServlet threw exception
      javax.faces.FacesException: org.apache.jasper.JasperException
       at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:425)
       at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
       at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:25)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.PersistenceFilter.doFilter(PersistenceFilter.java:28)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.ContextFilter.doFilter(ContextFilter.java:19)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:38)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
       at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
       at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
       at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
       at java.lang.Thread.run(Thread.java:595)
      Caused by: org.apache.jasper.JasperException
       at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
       at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
       at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
       at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
       at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
       at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
       ... 34 more
      


      One suggestion was to check my processimage.
      I checked my processimage its not cropped or anything. Its still clear.


      If any one has/ is faced/facing such kind of problem , I would like to know some hints/suggestions...

      Thaks

        • 1. Re: Servlet.service() for servlet jsp threw exception
          for Jbpm Novice

          Hi!

          I am getting these exception for most of my processes.. Whenever I try to
          Start New Process Execution..
          even if the Process is exact copy of websale example.

          16:16:01,516 ERROR [[FacesServlet]] Servlet.service() for servlet FacesServlet threw exception
          javax.faces.FacesException: org.apache.jasper.JasperException
          at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:425)
          at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
          at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
          at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
          at org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:25)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
          at org.jbpm.webapp.filter.PersistenceFilter.doFilter(PersistenceFilter.java:28)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
          at org.jbpm.webapp.filter.ContextFilter.doFilter(ContextFilter.java:19)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
          at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:38)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
          at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
          at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
          at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
          at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
          at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
          at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
          at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
          at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
          at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
          at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
          at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
          at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
          at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
          at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
          at java.lang.Thread.run(Thread.java:595)
          Caused by: org.apache.jasper.JasperException
          at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
          at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
          at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
          at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
          at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
          at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
          at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
          at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
          ... 34 more


          Please Help!



          • 2. Re: Servlet.service() for servlet jsp threw exception
            for Jbpm Novice

            Hi!

            I also Always get exceptions whenever I try to *save and close * the instance.

            17:06:54,286 ERROR [[FacesServlet]] Servlet.service() for servlet FacesServlet threw exception
            javax.faces.FacesException: Error calling action method of component with id taskform:transitionButton
            at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
            at javax.faces.component.UICommand.broadcast(UICommand.java:106)
            at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
            at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
            at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:271)
            at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
            at javax.faces.webapp.FacesServlet.service(FacesServlet.java:94)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
            at org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:25)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
            at org.jbpm.webapp.filter.PersistenceFilter.doFilter(PersistenceFilter.java:28)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
            at org.jbpm.webapp.filter.ContextFilter.doFilter(ContextFilter.java:19)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
            at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:38)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
            at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
            at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
            at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
            at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
            at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
            at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
            at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
            at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
            at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
            at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
            at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
            at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
            at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
            at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
            at java.lang.Thread.run(Thread.java:595)
            Caused by: javax.faces.el.EvaluationException: Exception while invoking expression #{taskBean.saveAndClose}
            at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:153)
            at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
            ... 37 more
            Caused by: org.jbpm.graph.def.DelegationException
            at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:299)
            at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:293)
            at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:195)
            at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:149)
            at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:133)
            at org.jbpm.graph.def.Transition.take(Transition.java:79)
            at org.jbpm.graph.def.Node.leave(Node.java:349)
            at org.jbpm.graph.node.StartState.leave(StartState.java:73)
            at org.jbpm.graph.exe.Token.signal(Token.java:127)
            at org.jbpm.graph.exe.Token.signal(Token.java:92)
            at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:351)
            at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:274)
            at org.jbpm.webapp.bean.TaskBean.saveAndClose(TaskBean.java:123)
            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:585)
            at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:129)
            ... 38 more
            Caused by: java.lang.NullPointerException
            at org.jbpm.graph.def.Action.execute(Action.java:79)
            at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:186)
            ... 53 more

            Thanks!



            • 3. Re: Servlet.service() for servlet jsp threw exception
              Ronald van Kuijk Master

              Is there more logging in the servlet engine? I've seen comparable errors, but there was always more detail in the logging.

              Can you see what is going on in

              at org.jbpm.graph.def.Action.execute(Action.java:79)
              at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:186)
              ... 53 more

              • 4. Re: Servlet.service() for servlet jsp threw exception
                for Jbpm Novice

                Looked in to code :
                in GraphElement.java error is at

                action.execute(ExecutionContext)


                which traces back to
                actionHandler.execite(executionContext)


                At this place ActionHandler must be null

                ActionHandler actionHandler =(ActionHandler) actionDelegation.getInstance();


                that look quite acceptable as actionDelegation is not set yet (???)

                I still cant understand what is referncedAction ??

                I will again go through code. Need to understand it better.

                Any opinion about * Thu Dec 15, 2005 16:25 PM * error post?



                Thanks!