Re: Very strange deserialization problem only in dev mode

Little more information on this.  The problem occurs when the page returns and the url is different than it was when it left.  Eg: It has some params.  Note, that is still has the gwt.codesvr param.

Also, the RPC call makes it to the server, it just doesn't make it back.  It falls into the onFailure.

This means we can actually work around the problem by grabbing all the url params we need, doing the RPC, and then adding a check in the onFailure to the redirect to the original url without the params.

Eg:

@Override

public void onFailure(Throwable caught) {

  // Only when using the GWT plugin

  if (GWT.isProdMode() == false) {

    Window.Location.replace("<your original url>");

  }

}

GWT bug bypassed!  :-)

On Wednesday, 10 July 2013 17:28:43 UTC+10, Craig Mitchell wrote:

I'm also getting this problem.  Only in dev mode, and only when the page is returning from an external page.

On our situation, we are doing OAuth.  So we redirect to an external site to login, then when the external site returns, the first RPC call throws a IncompatibleRemoteServiceException.

The only way to get it working again, is to restart the GWT server.  Refreshing, or closing and opening the browser, does not fix it.

GWT 2.5.1, Eclipse, Java 1.7.

On Sunday, January 20, 2013 1:57:14 AM UTC+11, Wayne Rasmuss wrote:

I have an application that gives me the following error only in dev mode and only when I go directly to the place that makes this server call. When the application is compiled or if I navigate to the place that makes the call trough other places, everything works fine. I thought it might be timing issues with getting the app loaded. So, I put a Thread.sleep(10000) in the service impl before I return data. It made no difference. Same behavior in all cases. Any thoughts?

WARNING: Fetch supplies failed: whatsnext.clientonly.EventSource@39cc1709

com.google.gwt.core.client.impl.SerializableThrowable$ThrowableWithClassName: The response could not be deserialized

at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:221)

at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287)

at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)

at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)

at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)

at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)

at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219)

at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)

at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:571)

at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:279)

at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)

at com.google.gwt.core.client.impl.Impl.apply(Impl.java)

at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:242)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)

at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)

at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)

at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)

at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547)

at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)

at java.lang.Thread.run(Thread.java:662)

Caused by: com.google.gwt.core.client.impl.SerializableThrowable$ThrowableWithClassName: java.lang.RuntimeException: Unable to find class com.google.gwt.user.client.rpc.core.java.lang.String_Array_Rank_1_FieldSerializer

at com.google.gwt.user.client.rpc.impl.SerializerBase.getTypeHandler(SerializerBase.java:164)

at com.google.gwt.user.client.rpc.impl.SerializerBase.instantiate(SerializerBase.java:114)

at com.google.gwt.user.client.rpc.impl.ClientSerializationStreamReader.deserialize(ClientSerializationStreamReader.java:396)

at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader.readObject(AbstractSerializationStreamReader.java:119)

at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter$ResponseReader$8.read(RequestCallbackAdapter.java:106)

at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:214)

... 28 more

Caused by: com.google.gwt.core.client.impl.SerializableThrowable$ThrowableWithClassName: Unable to find class com.google.gwt.user.client.rpc.core.java.lang.String_Array_Rank_1_FieldSerializer

at com.google.gwt.user.client.rpc.impl.ReflectionHelper.loadClass(ReflectionHelper.java:93)

at com.google.gwt.user.client.rpc.impl.SerializerBase.getTypeHandler(SerializerBase.java:160)

... 33 more

Caused by: com.google.gwt.core.client.impl.SerializableThrowable$ThrowableWithClassName

at com.google.gwt.dev.shell.CompilingClassLoader$MultiParentClassLoader.findClass(CompilingClassLoader.java:368)

at com.google.gwt.dev.shell.CompilingClassLoader$MultiParentClassLoader.loadClass(CompilingClassLoader.java:388)

at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:169)

at com.google.gwt.user.client.rpc.impl.ReflectionHelper.loadClass(ReflectionHelper.java:91)

... 34 more

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