8 Replies Latest reply on Mar 31, 2008 11:29 AM by kukeltje

javax.faces.FacesException: Error calling action method of c

forjbpm Dec 9, 2005 5:10 PM

When I click on *save* to save my process I get following exception.

javax.faces.FacesException: Error calling action method of component with id taskform:_id9
 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.save}
 at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:153)
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
 ... 37 more
Caused by: java.lang.NullPointerException
 at org.jbpm.webapp.bean.TaskBean.save(TaskBean.java:86)
 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

Am I missing something in this case?
May be I need to build my class path to point it to something??

Please Help!
Looks like I am only landing in to problems somehow

1. Re: javax.faces.FacesException: Error calling action method

kukeltje Dec 10, 2005 5:40 AM (in response to forjbpm)

do you have required fields that are not filled in?
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2. Re: javax.faces.FacesException: Error calling action method

forjbpm Dec 12, 2005 9:48 AM (in response to forjbpm)

Thanks Ronald!(???)
That was the catch. I just defined a controleer variable in my task and it works fine now (but still ProcessInstance.signal() dosent advance to next step though).
Is it absolutely essential to have a controller variable for a given task??? or was it because my earlier versions of Workflow had that defined and later I removed it thats why it was still expecting those variables?

Again, Thanks a lot!
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3. Re: javax.faces.FacesException: Error calling action method

forjbpm Dec 13, 2005 3:09 PM (in response to forjbpm)

Hi!

Can anyone please tell me
Why defining a controller variable is absolutely necessary for a given task?????
or it is not?
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4. Re: javax.faces.FacesException: Error calling action method

kukeltje Dec 13, 2005 5:38 PM (in response to forjbpm)

why would it otherwise be a task? If there is no variable to act upon, you'd just have a page with one or more transitions. Is that what you require? If so, file a Jira issue that task cannot be performed upon if there is no variable.
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5. Re: javax.faces.FacesException: Error calling action method

forjbpm Dec 14, 2005 10:54 AM (in response to forjbpm)

My plan was to to use the jbpm web interface as a debugger interface. But I will have another php or jsp page as my user interface where I can display all my variables. In that case you dont need controller variables as such. (??)
Can I acces jbpm engine using anyother language than java (may be using something like REST interface?)

Please suggest!
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6. Re: javax.faces.FacesException: Error calling action method

kukeltje Dec 14, 2005 1:13 PM (in response to forjbpm)

jbpm has two things. a webinterface and a java api. If you want to access it any other way, you'd have to implement that interface yourself.
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7. Re: javax.faces.FacesException: Error calling action method

korango Mar 31, 2008 9:27 AM (in response to forjbpm)

Hello fellow developers,

I have also bumped onto the same problem when developing an application. Although I am using JSF and JBoss Application Server. The details of the exception I am getting is:

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Error calling action method of component with id registerForm:registerUser
javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause

javax.faces.FacesException: Error calling action method of component with id registerForm:registerUser
org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
javax.faces.component.UICommand.broadcast(UICommand.java:106)
javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.

I suspect this might be the wrong post, but snce I thought they are similar problems and someone seems to have solved it, I felt it appropriate to post it here. Apologies for any of mixups that may arise.

I lok forward to your advice and reply.

Kind Regards,
Caesar Olima
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8. Re: javax.faces.FacesException: Error calling action method

kukeltje Mar 31, 2008 11:29 AM (in response to forjbpm)

it's similar in a way that it is jsf related. The error is in on a different action, probably in a different version of the console. Besides that there is way to little info to see what is going on. There should be more info in the error log of the server (this seems to come from a screendump). Otherwise it is impossible for us to help
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