Re: GWT 2.0 RC1 deRPC fails on App Engine?
Don't know if it is the same problem.. but are you initializing GAE to
run in your application configuration? I couldn't get server side to
work because when configuring a custom Java Application Configuration,
since Web Application doesn't work with GWT 2.0 because it is now
DevMode and not HostedMode. To get GAE up, we need to pass a "-server"
argument so that GAE runs instead of plain old Jetty. I haven't gotten
an answer from anyone what that -server argument should be.
Tristan
On Nov 18, 11:01 pm, Kabe <kabr...@robichaux.com> wrote:
> I'm trying to use deRPC of GWT 2.0 RC1 on App Engine and i'm getting
> the following exception. Is this because sun.misc.Unsafe is
> unavailable on App Engine (i'm not sure it isn't, but it seems
> possible)? Seems strange that GWT 2.0 RPC would not work on App
> Engine. Did i fail to configure something correctly or is this an
> intended incompatibility with App Engine?
>
> javax.servlet.ServletContext log: Exception while dispatching incoming
> RPC call
> java.lang.ExceptionInInitializerError
> at com.google.gwt.rpc.server.RPC.decodeRequest(RPC.java:158)
> at com.google.gwt.rpc.server.RpcServlet.processCall(RpcServlet.java:
> 141)
> at com.google.gwt.rpc.server.RpcServlet.processPost(RpcServlet.java:
> 203)
> at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost
> (AbstractRemoteServiceServlet.java:62)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> 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$CachedChain.doFilter
> (ServletHandler.java:1084)
> at org.mortbay.jetty.servlet.ServletHandler.handle
> (ServletHandler.java:360)
> at org.mortbay.jetty.security.SecurityHandler.handle
> (SecurityHandler.java:216)
> at org.mortbay.jetty.servlet.SessionHandler.handle
> (SessionHandler.java:181)
> at org.mortbay.jetty.handler.ContextHandler.handle
> (ContextHandler.java:712)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> 405)
> at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle
> (AppVersionHandlerMap.java:238)
> at org.mortbay.jetty.handler.HandlerWrapper.handle
> (HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:313)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> 506)
> at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete
> (HttpConnection.java:830)
> at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable
> (RpcRequestParser.java:76)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
> at
> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
> (JettyServletEngineAdapter.java:139)
> at com.google.apphosting.runtime.JavaRuntime.handleRequest
> (JavaRuntime.java:239)
> at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $6.handleBlockingRequest(RuntimePb.java:5135)
> at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $6.handleBlockingRequest(RuntimePb.java:5133)
> at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest
> (BlockingApplicationHandler.java:24)
> at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
> 363)
> at com.google.net.rpc.impl.Server$2.run(Server.java:814)
> at com.google.tracing.LocalTraceSpanRunnable.run
> (LocalTraceSpanRunnable.java:56)
> at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
> (LocalTraceSpanBuilder.java:516)
> at com.google.net.rpc.impl.Server.startRpc(Server.java:769)
> at com.google.net.rpc.impl.Server.processRequest(Server.java:351)
> at com.google.net.rpc.impl.ServerConnection.messageReceived
> (ServerConnection.java:437)
> at com.google.net.rpc.impl.RpcConnection.parseMessages
> (RpcConnection.java:319)
> at com.google.net.rpc.impl.RpcConnection.dataReceived
> (RpcConnection.java:290)
> at com.google.net.async.Connection.handleReadEvent(Connection.java:
> 436)
> at com.google.net.async.EventDispatcher.processNetworkEvents
> (EventDispatcher.java:762)
> at com.google.net.async.EventDispatcher.internalLoop
> (EventDispatcher.java:207)
> at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
> 101)
> at com.google.net.rpc.RpcService.runUntilServerShutdown
> (RpcService.java:251)
> at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
> (JavaRuntime.java:396)
> at java.lang.Thread.run(Unknown Source)
> Caused by: java.lang.RuntimeException: Unable to get Unsafe instance
> at com.google.gwt.rpc.server.CommandSerializationUtil.<clinit>
> (CommandSerializationUtil.java:443)
> ... 45 more
> Caused by: java.lang.NoSuchFieldException: theUnsafe
> at com.google.appengine.runtime.Request.process-c17519ba124c1455
> (Request.java)
> at java.lang.Class.getDeclaredField(Class.java:158)
> at com.google.gwt.rpc.server.CommandSerializationUtil.<clinit>
> (CommandSerializationUtil.java:430)
> ... 45 more
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