i tested the RequestBuilder class,it does not work.
final RequestBuilder rb = new
RequestBuilder(RequestBuilder.POST,
"http://code.google.com/intl/zh-CN/webtoolkit/doc/1.6/tutorial/
RPC.html");
rb.setCallback(new RequestCallback() {
public void onResponseReceived(Request request,
Response response)
{
Window.alert(String.valueOf(response.getStatusCode()));
if (response.getStatusCode() == 200) {
Window.alert(response.getText());
}
}
@Override
public void onError(Request request, Throwable
exception) {
}
});
Button btn = new Button();
RootPanel.get().add(btn);
btn.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
try {
rb.send();
} catch (RequestException e) {
e.printStackTrace();
}
}
});
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