Customize auth error from Spring Security using OAuth2

Question

I was wondering if I could customize the following authorization error:

{
  \"error\": \"unauthorized\",
  \"error_description\": \"Full authentication is re         


        

Answer 1

I think you can use @ControllerAdviceto catch the exception unauthorized then format response as your expectation and return it. Something like this:

@ResponseBody
@ExceptionHandler(CustomException.class)
@ResponseStatus(value=HttpStatus.UNAUTHORIZED, reason="Exception message")
public JsonResponse unAuthorised(HttpServletRequest request, Exception ex) {
    return new JsonResponse("ERROR", 401, "Unauthorised Request");
}

Hope this help.