EndpointHandlerMapping : Did not find handler method for message in the logs

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I have a simple @RestController setup in a spring boot application. I have spring filter setup that hits this "/desktop/sessionTimeoutCheck" to make sure user session is still active. It works for most of the time and then it stops working.

When I look at the logs I see the "did not find hanlder" DEBUG level message but I know that this controller is being hit based on the "In desktop session handler" message I am printing. Is it normal to see this message or does this mean something is wrong with the controller setup?

Controller

@RequestMapping(value = "/desktop/sessionTimeoutCheck", method = GET)
public ResponseEntity<RestResponse> sessionCheck() {
    System.out.println("SessionController: In desktop session handler");
    return new ResponseEntity<>(new RestResponse<>(null, MessageSeverity.SUCCESS, "Done"), HttpStatus.OK);
}

Logs

o.s.b.w.f.OrderedRequestContextFilter    : Bound request context to thread: Request(GET //localhost:8080/desktop/sessionTimeoutCheck)@6bb79ef4
o.s.b.a.e.mvc.EndpointHandlerMapping     : Looking up handler method for path /desktop/sessionTimeoutCheck
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Did not find handler method for [/desktop/sessionTimeoutCheck]
SessionController: In desktop session handler
o.s.b.w.f.OrderedRequestContextFilter    : Cleared thread-bound request context: Request(GET //localhost:8080/desktop/sessionTimeoutCheck)@6bb79ef4
spring-restcontroller spring-boot spring-mvc spring java
1 Answers

It’s normal.

When the dispatcher servlet receives a request, it calls each of its handler mappings in turn to find a handler for the request. It stops searching once it has found a matching handler and dispatches the request to it. In this case the matching handler is the method on your session controller.

The debug logging from EndpointHandlerMapping shows it being called as part of the search for a matching handler. It responds that it doesn’t have one. The search continues till the handler for your controller method is found.

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