将GWT输入发布到PHP页面

Question

I have a GWT app with inputs (let's say Name, Address, Email). After user input all the required fields and press submit button, a PHP page will display the inputs from the GWT app. How can I connect my GWT app to php? I'm using Request Builder now. Do I still have to use XML to pass the GWT inputs to PHP? Please help. I'm just starting to learn GWT here.

Thanks in advance.

Answer 1

You actually don't need RequestBuilder for something like that.
It would be sufficient if you redirect to the PHP url and append your inputs as GET parameters. So for example in the click handler you can do something like that:

submitButton.addClickHandler(new ClickHandler() {
    public void onClick(ClickEvent event) {
        String linkURL = "somePage.php?name="+name+"&address="+address+"&email="+email;
         Window.Location.assign(linkURL);
    }
});

and then in the PHP page you can retrieve the parameters in this way:

$name = $_GET['name'];
$address = $_GET['address'];
$email = $_GET['email'];

Update

If you want to use RequetBuilder you have to do something like that:

submitButton.addClickHandler(new ClickHandler() {
    public void onClick(ClickEvent event) {
        RequestBuilder request = new RequestBuilder(POST,PHP_URL);
        JSONObject jsonValue = new JSONObject();
        jsonValue.put("name", new JSONString(name));
        jsonValue.put("address", new JSONString(address));
        jsonValue.put("email", new JSONString(email));
        request.setHeader("Content-Type", "application/json");
        request.sendRequest(jsonValue.toString(),new RequestCallback() {
            @Override
            public void onResponseReceived(Request request, Response response) {
                if (200 == response.getStatusCode()) {
                     //retrieve a uniqueid or so and redirect to the PHP page which displays the infos
                } else {
                   // displayError("Couldn't retrieve 

                }
            }

            @Override
            public void onError(Request request, Throwable exception) {
                 //displayError("Couldn't retrieve JSON");
            }
         });

    }
});

On the server you just access the global $_POST variable to get the values:

$name = @_POST['name']