code: public static String generateToken() {
          String timestampByBase64 = Utils.rightTrim(Base64.encode(String.valueOf(System.currentTimeMillis())), "=");
          return (RandomUtil.simpleUUID() + timestampByBase64).toLowerCase();
      }
docs: 生成令牌
  
  @return 令牌
  
  @since 1.1.1