Google Web Toolkit: Re: RequestBuilder Newbie Question

Wednesday, March 27, 2013

Re: RequestBuilder Newbie Question

"samewebsite" is not necessarily the same "origin": an "origin" is defined as the triplet: scheme (http vs. https), host (note that hostname is not the same as IP address for the same machine) and port.

I bet you get getStatusCode() == 0, which is a symptom of cross-origin requests.

Solution: either use the same origin (easy fix: remove http://samewebsite" from the URL, just use /BROADCAST/etc.) or enable CORS on your server.

On Wednesday, March 27, 2013 4:13:28 PM UTC+1, Ed wrote:

HI All,

I am trying to implemet a call to server for data retreival using request builder.

The request builder does not throw errors but also does NOT return data.

When I run the url in a browser window it does return results
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
  <head></head>
<body>
<p>Any Old Song Will Do..</p>
  </body>
</html>  
private final String    url            = "http://samewebsite/" + "BROADCAST" + "/cyberobjects/RemoteUpdate.html?LTA=MBONAIR&LTN=MOBILE";

        RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, URL.encode(url));

        try {
            @SuppressWarnings("unused")
            Request response = builder.sendRequest(null, new RequestCallback() {
                public void onError(Request request, Throwable exception) {

                    System.out.println("RequestBuilder On Error: " + url);
                }

                public void onResponseReceived(Request request, Response response) {
                    System.out.println("RequestBuilder Success: " + url);
                    System.out.println("RequestBuilder Success: getTxt" + response.getText());
                    System.out.println("RequestBuilder Success: getHeadersAsString" + response.getHeadersAsString());
                    System.out.println("RequestBuilder Success: getStatusText()" + response.getStatusText());
                    System.out.println("RequestBuilder Success: toString()" + response.toString());
                    System.out.println("RequestBuilder Success: toString()" + response.toString());

                }

            });

Yields the following results:

RequestBuilder Success: http://samewebsite/BROADCAST/cyberobjects/RemoteUpdate.html?LTA=MBONAIR&LTN=MOBILE
RequestBuilder Success: getText (is blank)
RequestBuilder Success: getHeadersAsString (is blank)
RequestBuilder Success: getStatusText() (is blank)
RequestBuilder Success: toString()com.google.gwt.http.client.Request$1@1380717c

I am wondering if I need to switch to json data retrieval or if I am constructing the response/request in a wrong way.

Thanks

Ed

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Google Web Toolkit

Wednesday, March 27, 2013

Re: RequestBuilder Newbie Question

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