code: @Override
      public void checkVaild() {
          super.checkVaild();
          if (this.refundmoney < 1) throw new RuntimeException("refundmoney is illegal");
          if (this.paymoney < 1) throw new RuntimeException("paymoney is illegal");
          if (this.refundno == null || this.refundno.isEmpty()) throw new RuntimeException("refundno is illegal");
          if (this.thirdpayno == null || this.thirdpayno.isEmpty()) throw new RuntimeException("thirdpayno is illegal");
          if (this.clientAddr == null || this.clientAddr.isEmpty()) throw new RuntimeException("clientAddr is illegal");
      }
docs: 扩展信息