private boolean isRepeatSubmit(HttpServletRequest request) {
        String serverToken = (String) request.getSession(false).getAttribute(SUBMIT_TOKEN_NAME);
        if (serverToken == null) {
            return true;
        }
        String clinetToken = request.getParameter(SUBMIT_TOKEN_NAME);
        if (clinetToken == null) {
            return true;
        }
        if (!serverToken.equals(clinetToken)) {
            return true;
        }
        return false;
    }