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https://issues.apache.org/jira/browse/WICKET-5371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13783004#comment-13783004
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Emond Papegaaij commented on WICKET-5371:
-----------------------------------------
Did you enable session support in atmosphere in your web.xml?
<init-param>
<param-name>org.atmosphere.cpr.sessionSupport</param-name>
<param-value>true</param-value>
</init-param>
> IllegalArgumentException: Argument 'page' may not be null. - when sending
> event from asynchronous process
> ---------------------------------------------------------------------------------------------------------
>
> Key: WICKET-5371
> URL: https://issues.apache.org/jira/browse/WICKET-5371
> Project: Wicket
> Issue Type: Bug
> Components: wicket-atmosphere
> Affects Versions: 6.10.0
> Reporter: Vojtěch Krása
> Assignee: Emond Papegaaij
>
> I never reproduced it on local, it happens a lot on linux server behind
> apache proxy(could be just coincidence). I could try to debug it, if you have
> no idea why it could happen. It also seems that it happens only after server
> is running for some time.
> I am sending multiple events to update different panels from asynchronous
> process like this:
>
> EventBus.get(Application.get(WicketApplication.class.getName())).post(new
> ComponentBuildEvent());
> 15:16:36 ERROR o.a.w.DefaultExceptionMapper [refreshExecutor-4]: - Unexpected
> error occurred
> java.lang.IllegalArgumentException: Argument 'page' may not be null.
> at org.apache.wicket.util.lang.Args.notNull(Args.java:41)
> ~[wicket-util-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.ajax.AjaxRequestHandler.<init>(AjaxRequestHandler.java:112)
> ~[wicket-core-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.protocol.http.WebApplication$DefaultAjaxRequestTargetProvider.get(WebApplication.java:961)
> ~[wicket-core-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.protocol.http.WebApplication$DefaultAjaxRequestTargetProvider.get(WebApplication.java:954)
> ~[wicket-core-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.protocol.http.WebApplication.newAjaxRequestTarget(WebApplication.java:805)
> ~[wicket-core-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.atmosphere.AtmosphereRequestHandler.respond(AtmosphereRequestHandler.java:69)
> ~[wicket-atmosphere-0.13.jar:0.13]
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:861)
> ~[wicket-core-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> ~[wicket-request-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261)
> [wicket-core-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218)
> [wicket-core-6.10.0.jar:6.10.0]
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289)
> [wicket-core-6.10.0.jar:6.10.0]
> at org.apache.wicket.atmosphere.EventBus.post(EventBus.java:368)
> [wicket-atmosphere-0.13.jar:0.13]
> at
> org.apache.wicket.atmosphere.EventBus.postToSingleResource(EventBus.java:344)
> [wicket-atmosphere-0.13.jar:0.13]
> at org.apache.wicket.atmosphere.EventBus.post(EventBus.java:319)
> [wicket-atmosphere-0.13.jar:0.13]
> at
> krasa.build.backend.facade.AsyncService.sendRefresh(AsyncService.java:28)
> [classes/:na]
> at
> krasa.build.backend.facade.AsyncService$$FastClassByCGLIB$$8fb726ed.invoke(<generated>)
> [spring-core-3.2.3.RELEASE.jar:na]
> at
> org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
> [spring-core-3.2.3.RELEASE.jar:3.2.3.RELEASE]
> at
> org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698)
> [spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
> [spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
> at
> org.springframework.aop.interceptor.AsyncExecutionInterceptor$1.call(AsyncExecutionInterceptor.java:89)
> [spring-aop-3.2.3.RELEASE.jar:3.2.3.RELEASE]
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> [na:1.7.0_03]
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> [na:1.7.0_03]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> [na:1.7.0_03]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> [na:1.7.0_03]
> at java.lang.Thread.run(Thread.java:722) [na:1.7.0_03]
> sometimes it even shows me this page, unfortunatelly I only found out later
> in not used tabs:
> http://svn.tmdev:8765/wicket/page?23
> Unexpected RuntimeException
> Last cause: Argument 'page' may not be null.
> Stacktrace
> Root cause:
> java.lang.IllegalArgumentException: Argument 'page' may not be null.
> ....
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