Question

In my GWT app I have the following model class:

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

public class TestEntity implements IsSerializable {
    public String testString;
}

This class implements the GWT custom IsSerializable marker interface – which I really don’t like, because I use my model classes not only for GWT. So I prefer java.io.Serializable.

But if I modify the class to implement Serializable instead of IsSerializable, the GWT RPC mechanism doesn’t work anymore. I don’t get an error on the server side, but on the client AsyncCallback.onFailure is invoked.

I am using…

• GWT 1.7.0.
• Spring 2.5.6.SEC01
• Spring and GWT are configured as described here.

Answer 1

Ok, I went through the comments of the Gwt-Spring-Article (the link i posted) and found the solution. I had to change two lines in the process call method:

RPCRequest rpcRequest = RPC.decodeRequest(payload, this.remoteServiceClass, this);
return RPC.invokeAndEncodeResponse(this.remoteService, rpcRequest.getMethod(), rpcRequest.getParameters(), rpcRequest.getSerializationPolicy());