Exposing GreetingServiceImpl as web service

Hi all,

Problem scenario is: I am writing a Google Gadget. Data presented in the gadget will come from my deployed gwt app. I am planing to call the web service from JS to show the required data.

I need to know how I can expose the Service implementation class like GreetingServiceImpl(generated by default as sample in Eclipse GWT project) as web service.

Regards,
Vikram

You can use something like this

Thanks Maneesh. Will explore on that.

Regards,
Vikram

Approach suggested http://code.google.com/p/gwtrpccommlayer/ will not work as, it is meant for the the consumption from java based client. Where as I am trying to invoke the web service through Java Script.

I either need to expose GreetingServiceImpl as a SOAP web service or as a REST full web service. I followed the tutorial given here. But instead of creating the Dynamic Web Project, I am trying this in the GWT project it self. But its giving the 404 error.

here is the code.

Servlet declaration in web.xml

And finally I HTML, having java script code to call the above service

<head>
    <title></title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <script language="javascript">
    var xmlhttp;
    function init() {
       // put more code here in case you are concerned about browsers that do not provide XMLHttpRequest object directly
       xmlhttp = new XMLHttpRequest();
    }
    function getdetails() {
        var empno = document.getElementById("empno");
        var url = "http://127.0.0.1:8888/Test/resources/employee?empno=1";
        xmlhttp.open('GET',url,true);
        xmlhttp.send(null);
        xmlhttp.onreadystatechange = function() {

Can anyone please give pointer on how can I solve this problem

Guys need help...

Please provide input, or there is any other way around to expose the logic written in the Service implementation class . I need to develope a Google Gadget/Wordpress Widget, and it needs data from my GWT app, how I can achieve this?

Thanks & Regards,
Vikram