@RequestMapping(value="/edit.do", method=RequestMethod.GET)
    public String editProfile(@RequestParam(value="userId", required = false) Long userId, Model model) {
        if(userId == null) {
            model.addAttribute("user", new User()); 
        } else {
            model.addAttribute("user", new User() ); //userService.getUser(userId));
        }
        return "editProfile";
    }