Hello! We have spent many hours working on a Wicket-based Java web application for Google App Engine. Our application runs properly on our Eclipse-based local development environment (SDK version 1.4.3). However, When we deploy to app engine, our session objects are returning null. Our development team has become quite impatient with app engine, and is working or porting the app to run other technologies like Hibernate JPA. Error trace below
Thanks for any help! Dave Donohue 2011-07-03 03:43:04.685 /inqle/;jsessionid=ayZp3ggilt1PrWp0iRIuEQ? wicket:bookmarkablePage=:org.inqle.qa.web.pages.questions.QuestionaryPage 500 587ms 1412cpu_ms 12api_cpu_ms 0kb Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.112 Safari/534.30,gzip(gfe) 173.49.156.228 - drdonohue [03/Jul/2011:03:43:04 -0700] "GET / inqle/;jsessionid=ayZp3ggilt1PrWp0iRIuEQ? wicket:bookmarkablePage=:org.inqle.qa.web.pages.questions.QuestionaryPage HTTP/1.1" 500 963 "http://inqle-qa.appspot.com/inqle/"; "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/ 12.0.742.112 Safari/534.30,gzip(gfe)" "inqle-qa.appspot.com" ms=587 cpu_ms=1412 api_cpu_ms=12 cpm_usd=0.039455 E 2011-07-03 03:43:04.616 org.apache.wicket.RequestCycle logRuntimeException: Can't instantiate page using constructor public org.inqle.qa.web.pages.questions.QuestionaryPage() org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor public org.inqle.qa.web.pages.questions.QuestionaryPage() at org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java: 212) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java: 57) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java: 298) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java: 320) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java: 234) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java: 92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java: 1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java: 486) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java: 319) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.inject.servlet.DefaultFilterPipeline.dispatch(DefaultFilterPipeline.java: 43) at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java: 110) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java: 97) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java: 35) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: 43) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 388) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: 182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: 765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: 418) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java: 249) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: 542) at org.mortbay.jetty.HttpConnection $RequestHandler.headerComplete(HttpConnection.java:923) at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java: 76) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java: 135) at com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java: 260) at com.google.apphosting.base.RuntimePb$EvaluationRuntime $2.handleRequest(RuntimePb.java:9673) at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java: 422) at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java: 573) at com.google.tracing.TraceContext$TraceContextRunnable $1.run(TraceContext.java:448) at com.google.tracing.TraceContext.runInContext(TraceContext.java: 688) at com.google.tracing.TraceContext $AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java: 326) at com.google.tracing.TraceContext $AbstractTraceContextCallback.runInInheritedContext(TraceContext.java: 318) at com.google.tracing.TraceContext $TraceContextRunnable.run(TraceContext.java:446) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java: 1110) at java.util.concurrent.ThreadPoolExecutor $Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) Caused by: java.lang.reflect.InvocationTargetException at com.google.appengine.runtime.Request.process-690d8e3f0bc6a46e(Request.java) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java: 57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java: 45) at java.lang.reflect.Constructor.newInstance(Constructor.java:33) at org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java: 192) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java: 57) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java: 298) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java: 320) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java: 234) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java: 92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java: 1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java: 486) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java: 319) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.inject.servlet.DefaultFilterPipeline.dispatch(DefaultFilterPipeline.java: 43) at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java: 110) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 388) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: 182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: 765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: 418) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: 542) at org.mortbay.jetty.HttpConnection $RequestHandler.headerComplete(HttpConnection.java:923) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) ... 10 more Caused by: java.lang.NullPointerException at org.inqle.qa.web.InqleQaSession.isParticipant(InqleQaSession.java: 171) at org.inqle.qa.web.InqleQaSession.getParticipant(InqleQaSession.java: 180) at org.inqle.qa.web.pages.questions.QuestionaryPage.createContentPanel(QuestionaryPage.java: 32) at org.inqle.qa.web.pages.PrivatePage.<init>(PrivatePage.java:22) at org.inqle.qa.web.pages.PrivateDetailPage.<init>(PrivateDetailPage.java: 14) at org.inqle.qa.web.pages.questions.QuestionaryPage.<init>(QuestionaryPage.java: 20) -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. 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