I have a small application (using GWT) which was working fine on my own
machine but gives problems when I deploy it on GAE. I get a message about a
NotSerializableException
for a class defined as a public inner class of a another class on the server
side. Instances of this class are associated with a session on the server
by:
HttpServletRequest req = this.getThreadLocalRequest();
HttpSession sess = req.getSession();
UserInfo ui = (UserInfo) sess.getAttribute("UserInfo");
The rest of this message is the traceback. Any ideas please?
Steve
---------------------------------------------------------
java.lang.RuntimeException: java.io.NotSerializableException:
uk.org.harwellcroquet.server.LoginServiceImpl$UserInfo
at
com.google.apphosting.runtime.jetty.SessionManager.serialize(SessionManager.java:393)
at
com.google.apphosting.runtime.jetty.SessionManager.createEntityForSession(SessionManager.java:370)
at
com.google.apphosting.runtime.jetty.SessionManager$AppEngineSession.save(SessionManager.java:164)
at
com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:41)
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:238)
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$2.handleRequest(RuntimePb.java:9669)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:439)
at com.google.net.rpc.impl.Server$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$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Caused by: java.io.NotSerializableException:
uk.org.harwellcroquet.server.LoginServiceImpl$UserInfo
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1173)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:343)
at java.util.HashMap.writeObject(HashMap.java:1018)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:962)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1478)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:343)
at
com.google.apphosting.runtime.jetty.SessionManager.serialize(SessionManager.java:390)
... 31 more
--
You received this message because you are subscribed to the Google Groups
"Google App Engine" group.
To post to this group, send email to google-appengine@googlegroups.com.
To unsubscribe from this group, send email to
google-appengine+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-appengine?hl=en.
