File reader in GWT

Question

i've got the follow issue: I wanna implement a file-reader in my GWT-application which allows the user to upload a file and work with it's content (in this particular case I'm talking about HTML). How do I realize that? As far as I know there is no way to use Java's usual BufferedReader. The only thing I've discovered so far is the following:

        try {
        Request r = new RequestBuilder(RequestBuilder.GET, file).sendRequest("", new RequestCallback() {

            @Override
            public void onResponseReceived(Request request, Response response) {
                String text = response.getText();
                System.out.println("1234");
            }

            @Override
            public void onError(Request request, Throwable exception) {
                System.out.println("456");
            }

            });
    } catch (RequestException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

But this wouldn't be that helpful as far as there's no file-chooser dialog.

I'd realy appreciate your help!

Regards

Answer 1

There is no ready to use FileReader API in GWT. You can build your own on top of JS Api http://www.html5rocks.com/en/tutorials/file/dndfiles/ for Firefox/Chrome and you'll have to use some kind of plugin for IE (flash for example) in order to make it work everywhere