How to get the path of the component instance under a page, that's invoking a servlet?

Joerg is correct - although the Sling Servlet docs say both ways are supported - Apache Sling :: Servlets and Scripts - Reg by Resource type is better practice.

When you build a Maven 13 archetype, it builds a servlet that is OOTB bound to the page that is created. For example - in a package named com.aem.community.core.servlets you will find  SimpleServlet.

For example- see this (I added "sling.servlet.selectors=" + "groups") :

@Component(service=Servlet.class,

           property={

                   Constants.SERVICE_DESCRIPTION + "=Simple Demo Servlet",

                   "sling.servlet.methods=" + HttpConstants.METHOD_GET,

                   "sling.servlet.resourceTypes="+ "AEMMaven13/components/structure/page",

                   "sling.servlet.selectors=" + "groups"

           })

public class SimpleServlet extends SlingSafeMethodsServlet {

    private static final long serialVersionUid = 1L;

    @Override

    protected void doGet(final SlingHttpServletRequest req,

            final SlingHttpServletResponse resp) throws ServletException, IOException {

        final Resource resource = req.getResource();

        resp.setContentType("text/plain");

        resp.getWriter().write("COOL Title = " + resource.adaptTo(ValueMap.class).get("jcr:title"));

This is bound too this page:

Now you can call this Servlet by using this URL:

http://localhost:4502/content/AEMMaven13/en.groups.html

And you can use this same URL to invoke this SERVLET via an AJAX CALL (that is called when a button is clicked for example):

$(document).ready(function() {

    $('body').hide().fadeIn(5000);

$('#submit').click(function() {

    var failure = function(err) {

             alert("Unable to retrive data "+err);

   };

   var claimId = 0;

    //Use JQuery AJAX request to post data to a Sling Servlet

    $.ajax({

         type: 'GET',   

         url:'http://localhost:4502/content/AEMMaven13/en.groups.html',

         success: function(msg){

           var myMsg = msg;

            alert(myMsg);

         }

     });

  });

}); // end ready

Result of an AJAX CALL -

Thanks Scott & Jorge..

This code sample is really helpful.

Hey Scott,

This works very nicely. I have tested this code snippet and this works!! Below is the screenshot.

Thanks,

Ratna Kumar.