避免频繁的发送短信验证码的处理

@RequestMapping("code")
public JSONResult smsCode(@RequestParam("mobile") String mobile){
    JSONResult result = new JSONResult();
    try {
        captchaService.sendSmsCode(mobile, CaptchaService.SMS_TYPE_OPEN);
        (JSONResult.SUCCESS);

    } catch (CaptchaException e) {
        (JSONResult.FAIL);
        ("发的太快了，歇一歇吧");
    }
    return result;
}