修复订单优惠券报错问题

BBWY.Server.Business/Order/OrderBusiness.cs

@@ -1293,6 +1293,8 @@ namespace BBWY.Server.Business
             var itemList = new List<OrderCouponDetailGroupItemResponse>();
             var couponDetailVoJToken = jtoken["jingdong_pop_order_coupondetail_responce"]["couponDetailExternal"]["couponDetailVo"];
             var promotionTaskJArray = couponDetailVoJToken["promotionList"] as JArray;
+            if (promotionTaskJArray != null)
+            {
                 itemList.AddRange(promotionTaskJArray.Select(j => new OrderCouponDetailGroupItemResponse()
                 {
                     Initiator = string.IsNullOrEmpty(j.Value<string>("promotionName")) ? "平台" : "商家",
@@ -1301,8 +1303,11 @@ namespace BBWY.Server.Business
                     UndertakenByMerchantAmount = j.Value<decimal>("salePrice"),
                     UndertakenByPlatformAmount = 0
                 }));
+            }
 
             var couponJArray = couponDetailVoJToken["couponList"] as JArray;
+            if (couponJArray != null)
+            {
                 itemList.AddRange(couponJArray.Select(j => new OrderCouponDetailGroupItemResponse()
                 {
                     Initiator = string.IsNullOrEmpty(j.Value<string>("couponName")) ? "平台" : "商家",
@@ -1313,6 +1318,7 @@ namespace BBWY.Server.Business
                                                 j.Value<decimal>("couponPrice"),
                     UndertakenByPlatformAmount = j.Value<decimal>("jdDivideMoney")
                 }));
+            }
 
             var groups = itemList.GroupBy(x => x.Initiator);