预留代码 设置额外配送费操作

Signed-off-by: 周晓航 <xiaohang.zhou@freemud.com>

shopping-cart-application-service/src/main/java/cn/freemud/entities/vo/DeliveryDto.java

@@ -3,8 +3,8 @@ package cn.freemud.entities.vo;
 import cn.freemud.entities.ExtraDeliveryDto;
 import lombok.Data;
 
-import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 
 /**
  * @author : xh.Z
@@ -28,7 +28,7 @@ public class DeliveryDto {
     /**
      * 附加配送费详细数据  上面的金额 已经加上 这里的金额了
      */
-    public List<ExtraDeliveryDto> deliveryAmountList = new ArrayList<>();
+    public List<ExtraDeliveryDto> deliveryAmountList;
 
 
     private DeliveryDto() {
@@ -37,6 +37,7 @@ public class DeliveryDto {
     public DeliveryDto(Long deliveryAmount, Integer deliveryFeeZeroReason, List<ExtraDeliveryDto> deliveryAmountList) {
         this.deliveryAmount = deliveryAmount;
         this.deliveryFeeZeroReason = deliveryFeeZeroReason;
+        Objects.requireNonNull(deliveryAmountList);
         this.deliveryAmountList = deliveryAmountList;
     }
 }