修改 orderCreateItemDTO ，改为内部 static

order/order-application/src/main/java/cn/iocoder/mall/order/application/convert/OrderConvertAPP.java

@@ -38,7 +38,7 @@ public interface OrderConvertAPP {
     OrderCreateDTO convert(OrderCreatePO orderCreatePO);
 
     @Mappings({})
-    List<OrderCreateItemDTO> convert(List<CartItemBO> cartItems);
+    List<OrderCreateDTO.OrderItem> convert(List<CartItemBO> cartItems);
 
     default OrderCreateDTO createOrderCreateDTO(Integer userId, Integer userAddressId, String remark, String ip,
                                                 List<CartItemBO> cartItems, Integer couponCardId) {

order/order-application/src/main/java/cn/iocoder/mall/order/application/po/user/OrderCreatePO.java

@@ -1,9 +1,9 @@
 package cn.iocoder.mall.order.application.po.user;
 
-import cn.iocoder.mall.order.api.dto.OrderCreateItemDTO;
 import lombok.Data;
 import lombok.experimental.Accessors;
 
+import javax.validation.constraints.Max;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Size;
 import java.io.Serializable;
@@ -38,6 +38,22 @@ public class OrderCreatePO implements Serializable {
 
     @NotNull()
     @Size(max = 1000, min = 1, message = "用户订单中没有商品!")
-    private List<OrderCreateItemDTO> orderItems;
+    private List<OrderItem> orderItems;
 
+    @Data
+    @Accessors(chain = true)
+    public static class OrderItem {
+
+        /**
+         * 商品编号
+         */
+        @NotNull
+        private Integer skuId;
+        /**
+         * 数量
+         */
+        @NotNull
+        @Max(value = 1000)
+        private Integer quantity;
+    }
 }