gwt-rpc call needs concrete class type to do the serialization. So the
generated autobean proxy won' t be serialized.
If you do want to send your autobean object to server side, you need to
use com.google.gwt.http.client.RequestBuilder (client side) to send the
encoded string to server side, and create a servlet to handle this request.
I attached two files (used in our project), hope these can help you.
Le jeudi 20 décembre 2012 14:55:50 UTC+1, Cenk Oguz a écrit :
>
> I have a small application where I am using autobeans extensively both on
> server and gwt side. I have an issue though with gwt-rpc calls, autobeans
> are apparently not serializable which causes gwt to fail with:
>
> com.google.gwt.user.client.rpc.SerializationException: Type '$Proxy85' was
> not included in the set of types which can be serialized by this
> SerializationPolicy
>
> Is there any obvious way that autobeans could be sent client->server side?
> Gwt-rpc is not good enough? Sending it over as a JSON string imposes some
> manual labor, seems overkill, would rather just go with POJOs in that case.
>
> /Cenk
>
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package com.exemple.client.service;
import com.google.gwt.core.client.GWT;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.rpc.StatusCodeException;
import com.exemple.client.ClientAutoBeanUtils;
import com.exemple.domain.autobean.ServerInfoBean;
public class ServerInfoService {
public final static String PATH = "/serverInfo";
public void getServerInfo(final AsyncCallback<ServerInfoBean> callback){
RequestBuilder request = new RequestBuilder(RequestBuilder.POST, PATH);
request.setCallback(new RequestCallback() {
@Override
public void onResponseReceived(Request request, Response response) {
if(callback == null) return;
if(200 == response.getStatusCode()){
try{
callback.onSuccess(ClientAutoBeanUtils.decode(response.getText(), ServerInfoBean.class));
}catch(Exception caught){
callback.onFailure(caught);
}
}else{
callback.onFailure(new StatusCodeException(response.getStatusCode(), response.getText()));
}
}
@Override
public void onError(Request request, Throwable exception) {
if(callback != null){
callback.onFailure(exception);
}else if(GWT.getUncaughtExceptionHandler() != null){
GWT.getUncaughtExceptionHandler().onUncaughtException(exception);
}
}
});
try {
request.send();
} catch (RequestException exception) {
if(callback != null){
callback.onFailure(exception);
}else if(GWT.getUncaughtExceptionHandler() != null){
GWT.getUncaughtExceptionHandler().onUncaughtException(exception);
}
}
}
}
package com.exemple.server.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.web.bindery.autobean.shared.AutoBean;
import com.exemple.client.service.ServerInfoService;
import com.exemple.domain.autobean.ServerInfoBean;
import com.exemple.server.ServerAutoBeanUtils;
@WebServlet(ServerInfoService.PATH)
public class ServerInfoServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.sendRedirect("/");
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
AutoBean<ServerInfoBean> bean = ServerAutoBeanUtils.createServerInfoBean();
bean.as().setAvailable(true);
bean.as().setVersion("");
String responsePayload = ServerAutoBeanUtils.encode(bean);
// now you can write your response into resp...
}
}
