Controller method to test spring boot internalization

i18nController.java

 @Autowired
  MessageSource messageSource;

  @RequestMapping(value = "/get-greeting", method = RequestMethod.GET)
  public String greeting() {
    /**
     *   @LocaleContextHolder.getLocale()
     *  Return the Locale associated with the given user context,if any, or the system default Locale otherwise.
     *  This is effectively a replacement for Locale.getDefault(), able to optionally respect a user-level Locale setting.
     */
   return messageSource.getMessage("good.morning", null, LocaleContextHolder.getLocale());
  }