I am trying to send a http request to my webserver using GWT. I keep
on getting a error on the line that reads
Request request = builder.sendRequest(null, new RequestCallback()
It says
RequestCallback cannot be resolved to a type.
I have the same problem on the line that catches the exception
catch (RequestException e) {
RequestException cannot be resolved to a object.
I’m new at java, I’m assuming that those names are not declared? I was
unable to get it to work and the current code I copied from google’s
site. Is there something wrong with my installation?
I’m using the eclipse plugin. The code looks like
package gWTAJAX.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class GWTAjax implements EntryPoint {
/**
* The message displayed to the user when the server cannot be
reached or
* returns an error.
*/
public void onModuleLoad() {
final Label label = new Label("hello ted");
RootPanel.get().add(label);
// set uppc
RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
"www");
try {
Request request = builder.sendRequest(null, new
RequestCallback()
{
public void onError(Request request, Throwable
exception) {
// Couldn't connect to server (could be timeout,
SOP
violation, etc.)
}
public void onResponseReceived(Request request,
Response
response) {
if (200 == response.getStatusCode()) {
// Process the response in response.getText()
} else {
// Handle the error. Can get the status text
from
response.getStatusText()
}
}
});
} catch (RequestException e) {
}
}
}
-Ted ajax
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