Hello,
I have a page which makes quite a heavy use of an
AbstractAjaxTimerBehavior for retrieving the content of some Panels
(and stops itself after the content is ready, like a sort of
"polling") and I am getting a very strange exception which only seems
to appear randomly:
-------------
2009-04-22 12:21:30,592 ERROR [RequestCycle] (RequestCycle.java:1463)
- Method onResourceRequested of interface
org.apache.wicket.IResourceListener targeted at component
[MarkupContainer [Component id = content]] threw an exception
org.apache.wicket.WicketRuntimeException: Method onResourceRequested
of interface org.apache.wicket.IResourceListener targeted at component
[MarkupContainer [Component id = content]] threw an exception
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:199)
at
org.apache.wicket.request.target.component.BookmarkableListenerInterfaceRequestTarget.processEvents(BookmarkableListenerInterfaceRequestTarget.java:163)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1192)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1271)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1370)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:501)
at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:455)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:288)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalArgumentException:
java.lang.classcastexcept...@42ae5f
at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAc1cessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:182)
... 26 more
-------------
The problem is this I don't get more information than that, and I only
get the exception once each, say... 50 times I reload the page (I mean
"browser reload" = new page object). The other 49 times everything
works fine. It's quite random...
Any clues?
Regards,
Daniel.
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