Sling servlet invalid recursion selector with json extension

Question

I am registering a Sling Servlet using

@Component(service=Servlet.class,
           property={
                   Constants.SERVICE_DESCRIPTION + "=Simple Demo Servlet",
                   "sling.servlet.methods=" + HttpConstants.METHOD_GET,
                   "sling.servlet.resourceTypes="+ "myapp/components/structure/page",
                   "sling.servlet.extensions=" + "json",
                   "sling.servlet.selectors=" + "myselector"
 })

But when calling URL <host:port>/content/myapp/en.myselector.js I get error

Invalid recursion selector value 'myselector'
Cannot serve request to /content/myapp/en.myselector.json in 
org.apache.sling.servlets.get.DefaultGetServlet

If we remove "sling.servlet.extensions=" + "json", from annotation, we are able to hit the servlet using <host:port>/content/myapp/en.myselector.js or <host:port>/content/myapp/en.myselector.html but not <host:port>/content/myapp/en.myselector.json

Any additional configurations required? or its conflicting with DefaultGetServlet? We were trying to expose JSON out of resource using servlet and JSON extension semantically making sense.

Did you try using <host:port>/content/myapp/en/_jcr_content.myselector.json. Since you are registering the servlet against the resource, the resource type for the page would in the jcr:content node and not on the page node itself. — rakhi4110
Thanks @rakhi4110, it works with jcr:content. I think when both selector and extension is there path till jcr:content is required, else if only selector is there it works without jcr:content for .js of .html. You can post answer, I can accept it. — Sandeep Kumar

rakhi4110 rakhi4110 · Accepted Answer · 2018-06-21T03:48:19

Since you've registered the servlet against the resource instead of a path, the resource is actually the jcr:content node of the page, rather than the page node itself.

Hence, the servlet should work when accessed with the jcr:content in the URL as shown below

<host:port>/content/myapp/en/_jcr_content.myselector.json

Sling servlet invalid recursion selector with json extension

1 Answers