@RequestMapping(method = RequestMethod.POST)
    public String onSubmit(HttpServletRequest request, Model model, 
            @ModelAttribute("loginResult") LoginResult loginResult,
            BindingResult result) {
        ValidationUtils.rejectIfEmptyOrWhitespace(result, "login",
                "required.login");
        ValidationUtils.rejectIfEmptyOrWhitespace(result, "password",
                "required.password");

        result.rejectValue("error", "error.account");
        
        if (!result.hasErrors()) {
            Account account = accountBo.getByLoginAndPassword(loginResult);
            if (account == null)
            {
                return "Login";
            }
            request.getSession().setAttribute("account", account);
            
        }
        else{
            return "Login";
        }
        
        return null;
    }

errors.reject("Hello");