商品券校验提示

shopping-cart-application-service/src/main/java/cn/freemud/enums/ResponseResult.java

@@ -85,6 +85,7 @@ public enum ResponseResult {
     SHOPPING_CART_SHOP_ID_NOT_EMPTY("44019", "门店编号不能为空"),
     SHOPPING_CART_COUPON_CAN_NOT_USE_THIS_SHOP("44020", "券不适用于该门店"),
     SHOPPING_CART_SEAT_EMPTY("44020", "键位为空"),
+    SHOPPING_CART_COUPON_USED("44021", "商品券已使用"),
 
     /**
      * 订单状态码

shopping-cart-application-service/src/main/java/cn/freemud/service/impl/mcoffee/ShoppingCartMCoffeeServiceImpl.java

@@ -192,7 +192,7 @@ public class ShoppingCartMCoffeeServiceImpl {
                     coupons.add(calculationDiscountCoupon);
                 }
                 if (couponCode != null && couponCode.equals(cartGoods.getCouponCode())) {
-                    throw new ServiceException(ResponseResult.PARAMETER_MISSING, "商品券已添加");
+                    throw new ServiceException(ResponseResult.SHOPPING_CART_COUPON_USED);
                 }
             }
         }