When you open your bundle in /system/console, do you see your servlet there listed as a service?

I am not able to see the servlet in the bundle .I created the sample servlet under we-retail project only (I can see CartEntryServlet).
Not sure what went wrong.

Then your servlet is not properly registered. Do you see any warnings during the maven-deploy?

Yes there are some warnings ,Please find it below :

[WARNING] Bundle com.adobe.cq.sample:we.retail.core:bundle:2.0.5-SNAPSHOT : Split package, multiple jars provide the same package:we/retail/core/productrelationships

Use Import/Export Package directive -split-package:=(merge-first|merge-last|error|first) to get rid of this warning

Package found in   [Jar:., Jar:uber-jar]

Class path         [Jar:., Jar:org.apache.felix.scr.annotations, Jar:bndlib, Jar:osgi.core, Jar:osgi.cmpn, Jar:osgi.annotation, Jar:jsr305, Jar:javax.inject, Jar:slf4j-api, Jar:jcr, Jar:servlet-api, Jar:commons-lang3, Jar:commons-collections, Jar:org.apache.sling.models.api, Jar:core.wcm.components.core, Jar:uber-jar]

[WARNING] Bundle com.adobe.cq.sample:we.retail.core:bundle:2.0.5-SNAPSHOT : aQute.bnd.annotation.Version annotation used in class we.retail.core.package-info. Bnd versioning annotations are deprecated as of Bnd 3.2 and support will be removed in Bnd 4.0. Please change to use OSGi versioning annotations.

[WARNING] Bundle com.adobe.cq.sample:we.retail.core:bundle:2.0.5-SNAPSHOT : aQute.bnd.annotation.ProviderType annotation used in class com.adobe.cq.commerce.api.CommerceServiceFactory. Bnd versioning annotations are deprecated as of Bnd 3.2 and support will be removed in Bnd 4.0. Please change to use OSGi versioning annotations.

[WARNING] Bundle com.adobe.cq.sample:we.retail.core:bundle:2.0.5-SNAPSHOT : aQute.bnd.annotation.ProviderType annotation used in class com.adobe.cq.commerce.api.ProductRelationshipsProvider. Bnd versioning annotations are deprecated as of Bnd 3.2 and support will be removed in Bnd 4.0. Please change to use OSGi versioning annotations.

Apart from what Feike mentioned, if you still want to use this article:- Adobe Experience Manager Help | Developing AEM components that display WordPress information

Or

Adobe Experience Manager Help | Creating an AEM HTML Template Language Component that posts data using AJAX

OR

Adobe Experience Manager Help | Submitting Adobe Experience Manager form data to Java Sling Servlets

package com.adobe.cq.sling;

import <all libs>

@SlingServlet(paths="/bin/myWordPress", methods = "GET", metatype=true)

public class HandleWordPress extends org.apache.sling.api.servlets.SlingAllMethodsServlet  

{

    /** Default log. */

    protected final Logger log = LoggerFactory.getLogger(this.getClass());

    private ArrayList<String> posts ;

    @Override

     protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) {

      try

      {

         //Your Code

        response.setContentType("text/html");

            response.getWriter().write(listString);

      }

      catch(Exception e)

      {

          e.printStackTrace();

      }

    }

}

Or you can use OSGi annotations.

-Kautuk

You have to make sure that the OSGi bundle (In which the servlet exists) - is in an Active State.

TO see a Servlet work - so you can follow the steps - watch this video --

Scott's Digital Community: Submitting Adobe Experience Manager form data to custom Sling Servlets

Yes the bundle is active

Hi Feike ,

Sorry for delay in reply.
I tried using OSGI annotations as well but still it is giving same issue(Resource at '/bin/customServlet' not found: No resource found).

I used the following code :

//import packages

/**

* Test Servlet

*/

@Component(service = Servlet.class,

property =

{ SLING_SERVLET_PATHS + "=/bin/customServlet",

  SLING_SERVLET_METHODS + "=GET",

})

public class Test extends SlingAllMethodsServlet {

    /**

*

*/

private static final long serialVersionUID = 1L;

protected static final Logger LOGGER = LoggerFactory.getLogger(Test.class);

    @Override

    protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException {

    LOGGER.info("ENTERED THE SERVLET");

    }

}

@kautuksahni  :
Thanks for the links.
I tried using felix SCR annotations as well instead of OSGI annotation(org.osgi.service.component.annotations),but still it is giving the error message -Resource at '/bin/customServlet' not found: No resource found

I am not sure If I have to anything additionally.Please let me know.

Thanks,
Pallavi