解决邮件轰炸

license/src/main/java/iot/sixiang/license/controller/LoginController.java

@@ -139,6 +139,10 @@ public class LoginController {
     @ApiOperation(value = "发送验证码", notes = "发送验证码到邮箱")
     @GetMapping("send_code")
     public BaseResult sendCode() {
+        Date emailCodeExpTime = UserUtils.getEmailCodeExpTime(account);
+        if (emailCodeExpTime != null && emailCodeExpTime.after(new Date())) {
+            return BaseResult.failed().setMsgValue("验证码还在有效期内");
+        }
         String code = CommonUtil.getValidateCode();
         String content = "感谢您使用实名制服务器" + "\n" + "此次登录验证码为：" + code + "(有效期三分钟)。验证码提供给他人可能导致账号被盗，请勿转发或泄露。" + "\n" + "--------------------------------------------------------------" + "此邮件由系统自动发送，请勿回复此邮件" + "--------------------------------------------------------------";
         emailUtils.sendSimpleMail(account, "感谢您使用实名制服务器", content);