Question

I need to read form TXT file on the server side and send its contents to the client side to print in a label or any thing, i need to know where i place the TXT file is it on the server package or in WAR and how to code it?? thanks

Answer 1

It doens’t really matter where you place the file. It must be on the server and a php script must be able to open the file. You can ready the text file the following way with php.
Then make a http request with GWT to that file.

Read the file:

<?php
// get contents of a file into a string
$filename = "/usr/local/something.txt";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize($filename));
fclose($handle);
echo $contents;
?>

Make http request:

public class GetExample implements EntryPoint {
  public static final int STATUS_CODE_OK = 200;

  public static void doGet(String url) {
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);

    try {
      Request response = builder.sendRequest(null, new RequestCallback() {
        public void onError(Request request, Throwable exception) {
          // Code omitted for clarity
        }

        public void onResponseReceived(Request request, Response response) {
          String content = response.getText();
        }
      });
    } catch (RequestException e) {
      // Code omitted for clarity
    }
  }

  public void onModuleLoad() {
    doGet("/");
  }
}