Wednesday, May 8, 2013

Re: SubmitCompleteEvent.getResults() always returns null

OK,

I realized what I'm doing is a cross-domain call, thanks to "@tip, the result html can be null as a result of submitting a form to a different domain."

However, how do I solve this thing out? I really don't know what to do...


Em quarta-feira, 8 de maio de 2013 12h09min56s UTC-3, Robson Braga escreveu:
Hi guys,

I've a RESTful webservice that returns xml/json and it works properly.

If I submit a HTML form to that webservice, Firefox and Chrome shows the XML file, but when I try to submit a GWT FormPanel, on the onSubmitComplete callback, SubmitCompleteEvent.getResults() always returns null.

Here is my HTML code:

<html>
    <body>
        <form method="POST" action="http://localhost:8080/myWebService/entry">
            <input type="email" id="email" name="email" width="10"><br>
            <input type="password" id="password" name="password" width="10"><br>
            <input type="submit" value="Test">
        </form>
    </body>
</html>

Here is my GWT Code:

    public void onModuleLoad() {
        final FormPanel formPanel = new FormPanel();
        formPanel.setEncoding(FormPanel.ENCODING_URLENCODED);
        formPanel.setMethod(FormPanel.METHOD_POST);

        VerticalPanel verticalPanel = new VerticalPanel();

        verticalPanel.add(new Label("Username"));
        TextBox userid = new TextBox();
        userid.setName("email");
        verticalPanel.add(userid);

        verticalPanel.add(new Label("Password"));
        PasswordTextBox passwd = new PasswordTextBox();
        passwd.setName("password");
        verticalPanel.add(passwd);

        verticalPanel.add(new Button("Submit", new ClickHandler() {
            public void onClick(ClickEvent event) {
                formPanel.submit();
            }
        }));

        formPanel.add(verticalPanel);
        formPanel.setAction("http://localhost:8080/myWebService/entry");
        formPanel.addSubmitCompleteHandler(new FormPanel.SubmitCompleteHandler() {
            public void onSubmitComplete(SubmitCompleteEvent event) {
               Window.alert(event.getResults());
            }
        });

        RootPanel.get().add(formPanel);   
    }

What am I doing wrong? Am I forgetting something? Is there any SOP restriction? How do I bypass this issue?

Thanks in advance.

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