> There are actually two issues here.

> The first is the ClassCastException, which is caused by the following bug in
> Jasper 5.0.28, which is what we use to do JSP compilation:

> https://issues.apache.org/bugzilla/show_bug.cgi?id=31171

> This bug is fixed in Jasper 5.0.29 and we hope to upgrade to a later version
> in future releases of the SDK.

> The second bug is the underlying UserServiceFailureException.  You don't
> have the full stack trace here, since the ClassCastException was thrown
> instead, but there are only two possibilities that I'm aware of:

> - the redirect URL that you provided was too long, or

> - you are trying to authenticate users against a custom domain but have not
> registered your application in the Google Apps for your Domain console.

> Do either of those seem likely?

> -- Don

> On Fri, Apr 10, 2009 at 12:58 AM, oqhost <oqh...@gmail.com> wrote:

> > java.lang.ClassCastException:
> > com.google.appengine.api.users.UserServiceFailureException cannot be
> > cast to javax.servlet.ServletException
> >        at org.apache.jasper.runtime.PageContextImpl.handlePageException
> > (PageContextImpl.java:754)
> >        at org.apache.jsp.index_jsp._jspService(index_jsp.java:78)
> >        at
> > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> >        at
> > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > 487)
> >        at org.mortbay.jetty.servlet.ServletHandler.handle
> > (ServletHandler.java:362)
> >        at org.mortbay.jetty.security.SecurityHandler.handle
> > (SecurityHandler.java:216)
> >        at org.mortbay.jetty.servlet.SessionHandler.handle
> > (SessionHandler.java:181)
> >        at org.mortbay.jetty.handler.ContextHandler.handle
> > (ContextHandler.java:712)
> >        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > 405)
> >        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:268)
> >        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
> >        at

> > com.google.apphosting.runtime.jetty.ResourceFileServlet.serveWelcomeFileAsF orward
> > (ResourceFileServlet.java:263)
> >        at

> > com.google.apphosting.runtime.jetty.ResourceFileServlet.maybeServeWelcomeFi le
> > (ResourceFileServlet.java:202)
> >        at com.google.apphosting.runtime.jetty.ResourceFileServlet.doGet
> > (ResourceFileServlet.java:106)
> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> >        at
> > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > 487)
> >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > (ServletHandler.java:1093)
> >        at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter
> > (SaveSessionFilter.java:35)
> >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > (ServletHandler.java:1084)
> >        at
> > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
> > (TransactionCleanupFilter.java:43)
> >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > (ServletHandler.java:1084)
> >        at org.mortbay.jetty.servlet.ServletHandler.handle
> > (ServletHandler.java:360)
> >        at org.mortbay.jetty.security.SecurityHandler.handle
> > (SecurityHandler.java:216)
> >        at org.mortbay.jetty.servlet.SessionHandler.handle
> > (SessionHandler.java:181)
> >        at org.mortbay.jetty.handler.ContextHandler.handle
> > (ContextHandler.java:712)
> >        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > 405)
> >        at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle
> > (AppVersionHandlerMap.java:237)
> >        at org.mortbay.jetty.handler.HandlerWrapper.handle
> > (HandlerWrapper.java:139)
> >        at org.mortbay.jetty.Server.handle(Server.java:313)
> >        at
> > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> > 506)
> >        at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete
> > (HttpConnection.java:830)
> >        at
> > com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable
> > (RpcRequestParser.java:63)
> >        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
> >        at

> > com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceReques t
> > (JettyServletEngineAdapter.java:125)
> >        at com.google.apphosting.runtime.JavaRuntime.handleRequest
> > (JavaRuntime.java:235)
> >        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> > $6.handleBlockingRequest(RuntimePb.java:4547)
> >        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> > $6.handleBlockingRequest(RuntimePb.java:4545)
> >        at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest
> > (BlockingApplicationHandler.java:24)
> >        at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
> > 359)
> >        at com.google.net.rpc.impl.Server$2.run(Server.java:792)
> >        at com.google.tracing.LocalTraceSpanRunnable.run
> > (LocalTraceSpanRunnable.java:56)
> >        at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
> > (LocalTraceSpanBuilder.java:489)
> >        at com.google.net.rpc.impl.Server.startRpc(Server.java:748)
> >        at com.google.net.rpc.impl.Server.processRequest(Server.java:340)
> >        at com.google.net.rpc.impl.ServerConnection.messageReceived
> > (ServerConnection.java:422)
> >        at com.google.net.rpc.impl.RpcConnection.parseMessages
> > (RpcConnection.java:319)
> >        at com.google.net.rpc.impl.RpcConnection.dataReceived
> > (RpcConnection.java:290)
> >        at com.google.net.async.Connection.handleReadEvent(Connection.java:
> > 419)
> >        at com.google.net.async.EventDispatcher.processNetworkEvents
> > (EventDispatcher.java:733)
> >        at com.google.net.async.EventDispatcher.internalLoop
> > (EventDispatcher.java:207)
> >        at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
> > 101)
> >        at com.google.net.rpc.RpcService.runUntilServerShutdown
> > (RpcService.java:249)
> >        at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
> > (JavaRuntime.java:373)
> >        at java.lang.Thread.run(Unknown Source)
> > C 04-09 10:54PM 42.669
> > Uncaught exception from servlet
> > java.lang.ClassCastException:
> > com.google.appengine.api.users.UserServiceFailureException cannot be
> > cast to javax.servlet.ServletException
> >        at org.apache.jasper.runtime.PageContextImpl.handlePageException
> > (PageContextImpl.java:754)
> >        at org.apache.jsp.index_jsp._jspService(index_jsp.java:78)
> >        at
> > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> >        at
> > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > 487)
> >        at org.mortbay.jetty.servlet.ServletHandler.handle
> > (ServletHandler.java:362)
> >        at org.mortbay.jetty.security.SecurityHandler.handle
> > (SecurityHandler.java:216)
> >        at org.mortbay.jetty.servlet.SessionHandler.handle
> > (SessionHandler.java:181)
> >        at org.mortbay.jetty.handler.ContextHandler.handle
> > (ContextHandler.java:712)
> >        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > 405)
> >        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:268)
> >        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
> >        at

> > com.google.apphosting.runtime.jetty.ResourceFileServlet.serveWelcomeFileAsF orward
> > (ResourceFileServlet.java:263)
> >        at

> > com.google.apphosting.runtime.jetty.ResourceFileServlet.maybeServeWelcomeFi le
> > (ResourceFileServlet.java:202)
> >        at com.google.apphosting.runtime.jetty.ResourceFileServlet.doGet
> > (ResourceFileServlet.java:106)
> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> >        at
> > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > 487)
> >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > (ServletHandler.java:1093)
> >        at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter
> > (SaveSessionFilter.java:35)
> >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > (ServletHandler.java:1084)
> >        at
> > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
> > (TransactionCleanupFilter.java:43)
> >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > (ServletHandler.java:1084)
> >        at org.mortbay.jetty.servlet.ServletHandler.handle
> > (ServletHandler.java:360)
> >        at org.mortbay.jetty.security.SecurityHandler.handle
> > (SecurityHandler.java:216)
> >        at org.mortbay.jetty.servlet.SessionHandler.handle
> > (SessionHandler.java:181)
> >    

> Hi Nicolas. Is your ClassCastException also being thrown because
> UserServiceFailureException can't be cast to ServletException? If so, could
> it be caused by a long redirect URL or attempting to authenticate users
> against a custom domain as Don mentioned?

> The issue relating to Jasper should be resolved in an upcoming update to the
> SDK. In the meantime, we can try helping you discover why the original
> exception was thrown in the first place.

> - Jason

> On Thu, Apr 16, 2009 at 6:56 AM, nicolas.fran...@gmail.com <

> nicolas.fran...@gmail.com> wrote:

> > Hi,

> > I'm stuck with such a ClassCastException too and I can't read the
> > stack trace of the embedded exception :-(. When do you plan to
> > integrate the new release of Jasper, both on Google and in the SDK ?

> > Thanks for your answer.

> > Nicolas

> > On 10 avr, 18:02, Don Schwarz <schwa...@google.com> wrote:
> > > There are actually two issues here.

> > > The first is the ClassCastException, which is caused by the following bug
> > in
> > > Jasper 5.0.28, which is what we use to do JSP compilation:

> > >https://issues.apache.org/bugzilla/show_bug.cgi?id=31171

> > > This bug is fixed in Jasper 5.0.29 and we hope to upgrade to a later
> > version
> > > in future releases of the SDK.

> > > The second bug is the underlying UserServiceFailureException.  You don't
> > > have the full stack trace here, since the ClassCastException was thrown
> > > instead, but there are only two possibilities that I'm aware of:

> > > - the redirect URL that you provided was too long, or

> > > - you are trying to authenticate users against a custom domain but have
> > not
> > > registered your application in the Google Apps for your Domain console.

> > > Do either of those seem likely?

> > > -- Don

> > > On Fri, Apr 10, 2009 at 12:58 AM, oqhost <oqh...@gmail.com> wrote:

> > > > java.lang.ClassCastException:
> > > > com.google.appengine.api.users.UserServiceFailureException cannot be
> > > > cast to javax.servlet.ServletException
> > > >        at org.apache.jasper.runtime.PageContextImpl.handlePageException
> > > > (PageContextImpl.java:754)
> > > >        at org.apache.jsp.index_jsp._jspService(index_jsp.java:78)
> > > >        at
> > > > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> > > >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> > > >        at
> > > > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > > > 487)
> > > >        at org.mortbay.jetty.servlet.ServletHandler.handle
> > > > (ServletHandler.java:362)
> > > >        at org.mortbay.jetty.security.SecurityHandler.handle
> > > > (SecurityHandler.java:216)
> > > >        at org.mortbay.jetty.servlet.SessionHandler.handle
> > > > (SessionHandler.java:181)
> > > >        at org.mortbay.jetty.handler.ContextHandler.handle
> > > > (ContextHandler.java:712)
> > > >        at
> > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > > > 405)
> > > >        at
> > org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:268)
> > > >        at
> > org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
> > > >        at

> > com.google.apphosting.runtime.jetty.ResourceFileServlet.serveWelcomeFileAsF orward
> > > > (ResourceFileServlet.java:263)
> > > >        at

> > com.google.apphosting.runtime.jetty.ResourceFileServlet.maybeServeWelcomeFi le
> > > > (ResourceFileServlet.java:202)
> > > >        at com.google.apphosting.runtime.jetty.ResourceFileServlet.doGet
> > > > (ResourceFileServlet.java:106)
> > > >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
> > > >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> > > >        at
> > > > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > > > 487)
> > > >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > > > (ServletHandler.java:1093)
> > > >        at
> > com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter
> > > > (SaveSessionFilter.java:35)
> > > >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > > > (ServletHandler.java:1084)
> > > >        at
> > > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
> > > > (TransactionCleanupFilter.java:43)
> > > >        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
> > > > (ServletHandler.java:1084)
> > > >        at org.mortbay.jetty.servlet.ServletHandler.handle
> > > > (ServletHandler.java:360)
> > > >        at org.mortbay.jetty.security.SecurityHandler.handle
> > > > (SecurityHandler.java:216)
> > > >        at org.mortbay.jetty.servlet.SessionHandler.handle
> > > > (SessionHandler.java:181)
> > > >        at org.mortbay.jetty.handler.ContextHandler.handle
> > > > (ContextHandler.java:712)
> > > >        at
> > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > > > 405)
> > > >        at
> > com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle
> > > > (AppVersionHandlerMap.java:237)
> > > >        at org.mortbay.jetty.handler.HandlerWrapper.handle
> > > > (HandlerWrapper.java:139)
> > > >        at org.mortbay.jetty.Server.handle(Server.java:313)
> > > >        at
> > > > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> > > > 506)
> > > >        at
> > org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete
> > > > (HttpConnection.java:830)
> > > >        at
> > > > com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable
> > > > (RpcRequestParser.java:63)
> > > >        at
> > org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
> > > >        at

> > com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceReques t
> > > > (JettyServletEngineAdapter.java:125)
> > > >        at com.google.apphosting.runtime.JavaRuntime.handleRequest
> > > > (JavaRuntime.java:235)
> > > >        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> > > > $6.handleBlockingRequest(RuntimePb.java:4547)
> > > >        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> > > > $6.handleBlockingRequest(RuntimePb.java:4545)
> > > >        at
> > com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest
> > > > (BlockingApplicationHandler.java:24)
> > > >        at
> > com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
> > > > 359)
> > > >        at com.google.net.rpc.impl.Server$2.run(Server.java:792)
> > > >        at com.google.tracing.LocalTraceSpanRunnable.run
> > > > (LocalTraceSpanRunnable.java:56)
> > > >        at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
> > > > (LocalTraceSpanBuilder.java:489)
> > > >        at com.google.net.rpc.impl.Server.startRpc(Server.java:748)
> > > >        at
> > com.google.net.rpc.impl.Server.processRequest(Server.java:340)
> > > >        at com.google.net.rpc.impl.ServerConnection.messageReceived
> > > > (ServerConnection.java:422)
> > > >        at com.google.net.rpc.impl.RpcConnection.parseMessages
> > > > (RpcConnection.java:319)
> > > >        at com.google.net.rpc.impl.RpcConnection.dataReceived
> > > > (RpcConnection.java:290)
> > > >        at
> > com.google.net.async.Connection.handleReadEvent(Connection.java:
> > > > 419)
> > > >        at com.google.net.async.EventDispatcher.processNetworkEvents
> > > > (EventDispatcher.java:733)
> > > >        at com.google.net.async.EventDispatcher.internalLoop
> > > > (EventDispatcher.java:207)
> > > >        at
> > com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
> > > > 101)
> > > >        at com.google.net.rpc.RpcService.runUntilServerShutdown
> > > > (RpcService.java:249)
> > > >        at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
> > > > (JavaRuntime.java:373)
> > > >        at java.lang.Thread.run(Unknown Source)
> > > > C 04-09 10:54PM 42.669
> > > > Uncaught exception from servlet
> > > > java.lang.ClassCastException:
> > > > com.google.appengine.api.users.UserServiceFailureException cannot be
> > > > cast to javax.servlet.ServletException
> > > >        at org.apache.jasper.runtime.PageContextImpl.handlePageException
> > > > (PageContextImpl.java:754)
> > > >        at org.apache.jsp.index_jsp._jspService(index_jsp.java:78)
> > > >        at
> > > > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> > > >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> > > >        at
> > > > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > > > 487)
> > > >        at org.mortbay.jetty.servlet.ServletHandler.handle
> > > > (ServletHandler.java:362)
> > > >        at org.mortbay.jetty.security.SecurityHandler.handle
> > > > (SecurityHandler.java:216)
> > > >        at org.mortbay.jetty.servlet.SessionHandler.handle
> > > > (SessionHandler.java:181)
> > > >        at org.mortbay.jetty.handler.ContextHandler.handle
> > > > (ContextHandler.java:712)
> > > >        at
> > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > > > 405)
> > > >        at
> > org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:268)
> > > >  

<nicolas.fran...@gmail.com> wrote:
> Hi,

> I'm stuck with such a ClassCastException too and I can't read the
> stack trace of the embedded exception :-(. When do you plan to
> integrate the new release of Jasper, both on Google and in the SDK ?

> Thanks for your answer.

} %>

> org.datanucleus.exceptions.NucleusUserException. Since it is only the
> first time I'm using the DataNucleus framework, I have no idea what I
> did wrong. Do you know what I should search for (and where...) ?

> On Apr 16, 9:56 am, "nicolas.fran...@gmail.com"

> <nicolas.fran...@gmail.com> wrote:
> > Hi,

> > I'm stuck with such a ClassCastException too and I can't read the
> > stack trace of the embedded exception :-(. When do you plan to
> > integrate the new release of Jasper, both on Google and in the SDK ?

> > Thanks for your answer.

> You can try wrapping your JSP in a try-catch block like so:
> <% try { %>
> <!-- JSP code here -->
> <% } catch (RuntimeException ex) {
>   Logger log = Logger.getLogger(getClass().getName());
>   StringWriter sw = new StringWriter();
>   e.printStackTrace(new PrintWriter(sw));
>   log.severe(sw.toString());

>   throw ex;

> } %>

> This should leave the original exception message and stack trace in
> the logs for you to examine.

> org.apache.jsp.page.listTimesheets_jsp _jspService: Object Manager has
> been closed
> org.datanucleus.exceptions.NucleusUserException: Object Manager has
> been closed
>         at org.datanucleus.ObjectManagerImpl.assertIsOpen
> (ObjectManagerImpl.java:3816)
>         at org.datanucleus.ObjectManagerImpl.findObjectUsingAID
> (ObjectManagerImpl.java:2073)
>         at org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo
> (DatastoreQuery.java:335)
>         at org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo
> (DatastoreQuery.java:303)
>         at org.datanucleus.store.appengine.query.DatastoreQuery.access$000
> (DatastoreQuery.java:90)
>         at org.datanucleus.store.appengine.query.DatastoreQuery$1.apply
> (DatastoreQuery.java:250)
>         at org.datanucleus.store.appengine.query.DatastoreQuery$1.apply
> (DatastoreQuery.java:249)
>         at
> org.datanucleus.store.appengine.query.StreamingQueryResult.resolveNext
> (StreamingQueryResult.java:115)
>         at org.datanucleus.store.appengine.query.StreamingQueryResult.size
> (StreamingQueryResult.java:152)