Thursday, April 17, 2014

JS Error after compiling, runs great in dev mode

Hi, I have spent almost a couple of days trying to resolve this issue to no avail, so any help would be much appreciated.

I am intercepting GWT calls using Spring MVC through a custom GwtRpcController class. The method of interest is as follows:

 @Override
    public String processCall(String payload) throws SerializationException {
        try {
            RPCRequest rpcRequest = RPC.decodeRequest(payload, this.remoteServiceClass);
            // delegate work to the spring injected service
            return RPC.invokeAndEncodeResponse(this.remoteService, rpcRequest.getMethod(), rpcRequest.getParameters() );
        } catch (IncompatibleRemoteServiceException ex) {
            getServletContext().log("An IncompatibleRemoteServiceException was thrown while processing this call.", ex);
            return RPC.encodeResponseForFailure(null, ex);
        } catch (UnexpectedException ex) {
            if (ex.getCause() instanceof org.springframework.security.access.AccessDeniedException) {
                AccessDeniedException clientEx = new AccessDeniedException();
                getServletContext().log("A Spring AccessDeniedException was thrown while processing this call.", clientEx);
                return RPC.encodeResponseForFailure(null, clientEx);
            } else {
                throw ex;
            }
        }
    }


As you can see, I am catching the Spring Access Denied Exception which comes from the @PreAuthorize annotation in my methods, and using RPC.encodeResponseForFailure to pass my custom Exception (extends RuntimeException(as does GWT's own InvocationException), implements IsSerializable, and has a zero argument constructor). Here's the code if you want to refer:

package com.fundwave.fundadmin.shared;

import com.google.gwt.user.client.rpc.IsSerializable;

public class AccessDeniedException extends java.lang.RuntimeException implements IsSerializable {

    private static String AUTHORIZATION_ERROR = "Authorization Error: ";
   
    private String message;
   
    public AccessDeniedException() {
        super(AUTHORIZATION_ERROR+"Your account does not have the rights to perform this action.");
        this.message = AUTHORIZATION_ERROR+"Your account does not have the rights to perform this action.";
    }
   
    public AccessDeniedException(String msg) {
        super(AUTHORIZATION_ERROR+msg);
        this.message = AUTHORIZATION_ERROR+msg;
    }
   
    public AccessDeniedException(Throwable t) {
        super(t);
    }

    public AccessDeniedException(String msg, Throwable t) {
        super(AUTHORIZATION_ERROR+msg, t);
        this.message = AUTHORIZATION_ERROR+msg;
    }
   
    public String getMessage() {
        return message;
    }
   
    public void setMessage(String message) {
        this.message = message;
    }

}


On the client side, my code painlessly catches my custom exception in the development mode:

        caught.printStackTrace();
        if (caught instanceof AccessDeniedException) {
            serverResponseLabel.setText("Error: " + caught.getMessage());
        }


Surprisingly, after compiling, I get the following error:

Error: (TypeError) stack: com_google_gwt_user_client_rpc_impl_SerializerBase$MethodMap_$instantiate__Lcom_google_gwt_user_client_rpc_impl_SerializerBase$MethodMap_2Lcom_google_gwt_user_client_rpc_SerializationStreamReader_2Ljava_lang_String_2Ljava_lang_Object_2@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:36006 com_google_gwt_user_client_rpc_impl_SerializerBase_$instantiate__Lcom_google_gwt_user_client_rpc_impl_SerializerBase_2Lcom_google_gwt_user_client_rpc_SerializationStreamReader_2Ljava_lang_String_2Ljava_lang_Object_2@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:14354 com_google_gwt_user_client_rpc_impl_AbstractSerializationStreamReader_$readObject__Lcom_google_gwt_user_client_rpc_impl_AbstractSerializationStreamReader_2Ljava_lang_Object_2@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:35554 com_google_gwt_user_client_rpc_impl_RequestCallbackAdapter_onResponseReceived__Lcom_google_gwt_http_client_Request_2Lcom_google_gwt_http_client_Response_2V@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:35810 com_google_gwt_http_client_Request_$fireOnResponseReceived__Lcom_google_gwt_http_client_Request_2Lcom_google_gwt_http_client_RequestCallback_2V@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:27307 com_google_gwt_http_client_RequestBuilder$1_onReadyStateChange__Lcom_google_gwt_xhr_client_XMLHttpRequest_2V@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:27464 com_google_gwt_xhr_client_XMLHttpRequest_$setOnReadyStateChange__Lcom_google_gwt_xhr_client_XMLHttpRequest_2Lcom_google_gwt_xhr_client_ReadyStateChangeHandler_2V/this$static.onreadystatechange<@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:41345 com_google_gwt_core_client_impl_Impl_apply__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:23703 com_google_gwt_core_client_impl_Impl_entry0__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:23743 com_google_gwt_core_client_impl_Impl_entry__Lcom_google_gwt_core_client_JavaScriptObject_2Lcom_google_gwt_core_client_JavaScriptObject_2/<@http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html:23730 __gwt$exception: <skipped> fileName: http://127.0.0.1:8888/fundwave/3214F6C013E9480AD0BA8FA2C08F3CF9.cache.html lineNumber: 36006 columnNumber: 2: this$static[signature][0] is not a function

If it runs great in dev mode, what could cause the issue after compilation? I have tried with the latest GWT release (2.6) as well as the penultimate release.



 
 

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