It's just working asynchronously. Step 1 gets printed, then the call to the server is made asynchronously, so the code moves directly to the next step where Step 2 is printed out. You can't block/sequence execution of server calls in the way you're thinking in JavaScript (and therefore not in GWT).
To print Step2 after the file contents, you need to move the request to print it to the onResponseReceived method of your response handler. //Adam On 10 Jan, 18:47, Antoine Bruguier <[email protected]> wrote: > Hello, > > I am a newbie with GWT so please bear with me. I would like to write > some code that fetches some HTTP file. I have read the tutorials but > they do not quite answer my question. > > private void readFile(String url) > { > RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, > URL.encode(url)); > > System.out.println("fetching..."); > > 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) > { > System.out.println("response received..."); > if (200 == response.getStatusCode()) > { > PrintOut(response.getText()); > } > else > { > // response.getStatusText() > } > } > });} > > catch (RequestException e) > { > System.out.println("exception..." + e); > // Couldn't connect to server > } > > } > > public void PrintOut(String msg) > { > System.out.println(msg); > } > > public boolean isInputDataValid() > { > PrintOut("Step 1"); > readFile("http://localhost:8888/com.bruguier.dbquiz/dbquiz.html";); > PrintOut("Step 2"); > return true; > } > > OK, here's my code. It does something but not quite what I want. The > entry point is the function isInputDataValid(). My problem is that it > prints "Step 1", then "Step 2", then the content of the HTML page. I > guess the fetching is done in another thread. That is not what I want, > since I would like to return a specific boolean depending on the > content of my page. > > I guess I could write the code inside the function PrintOut() but that > is not so good. I am planning to fetch several pages and I would have > to replicate the code several times. I could also use a mutex system, > but that I haven't been able to find. Or maybe there's a ready example > using another approach but I couldn't find it. > > Please point me toward the right information. I hope I was clear. > > Thanks, > Tony --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
