@RequestMapping(value = "/getNum/{value}", method = RequestMethod.GET)
    public ModelAndView getNum(@PathVariable(value = "value") int value){
        int firstResult = value * 10;
        int maxResult = value * 10 + 10;
        ModelAndView mv = new ModelAndView("list");
        mv.addObject("users", userService.getUsers(firstResult, maxResult));
        return mv;
    }