后端：商品确认下单的信息 api 接口，后续需要结合促销，完善这个接口。

order/order-application/src/main/java/cn/iocoder/mall/order/application/controller/users/UsersOrderController.java

@@ -1,18 +1,25 @@
 package cn.iocoder.mall.order.application.controller.users;
 
 import cn.iocoder.common.framework.vo.CommonResult;
+import cn.iocoder.mall.order.api.CartService;
 import cn.iocoder.mall.order.api.OrderService;
+import cn.iocoder.mall.order.api.bo.CalcOrderPriceBO;
 import cn.iocoder.mall.order.api.bo.OrderCreateBO;
 import cn.iocoder.mall.order.api.bo.OrderPageBO;
+import cn.iocoder.mall.order.api.dto.CalcOrderPriceDTO;
 import cn.iocoder.mall.order.api.dto.OrderCreateDTO;
 import cn.iocoder.mall.order.api.dto.OrderQueryDTO;
+import cn.iocoder.mall.order.application.convert.CartConvert;
 import cn.iocoder.mall.order.application.convert.OrderConvertAPP;
 import cn.iocoder.mall.order.application.po.user.OrderCreatePO;
+import cn.iocoder.mall.order.application.vo.UsersOrderConfirmCreateVO;
 import cn.iocoder.mall.user.sdk.context.UserSecurityContextHolder;
-import org.springframework.beans.factory.annotation.Autowired;
+import com.alibaba.dubbo.config.annotation.Reference;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.Collections;
+
 /**
  * 订单API(users)
  *
@@ -23,8 +30,10 @@ import org.springframework.web.bind.annotation.*;
 @RequestMapping("users/order")
 public class UsersOrderController {
 
-    @Autowired
+    @Reference(validation = "true")
     private OrderService orderService;
+    @Reference(validation = "true")
+    private CartService cartService;
 
     @GetMapping("order_page")
     public CommonResult<OrderPageBO> getOrderPage(@Validated OrderQueryDTO orderQueryDTO) {
@@ -40,4 +49,19 @@ public class UsersOrderController {
         orderCreateDTO.setUserId(userId);
         return orderService.createOrder(orderCreateDTO);
     }
+
+    @GetMapping("/confirm_create_order")
+    public CommonResult<UsersOrderConfirmCreateVO> getConfirmCreateOrder(@RequestParam("skuId") Integer skuId,
+                                                                         @RequestParam("quantity") Integer quantity) {
+        // 创建 CalcOrderPriceDTO 对象，并执行价格计算
+        CalcOrderPriceDTO calcOrderPriceDTO = new CalcOrderPriceDTO()
+                .setItems(Collections.singletonList(new CalcOrderPriceDTO.Item(skuId, quantity, true)));
+        CommonResult<CalcOrderPriceBO> calcOrderPriceResult = cartService.calcOrderPrice(calcOrderPriceDTO);
+        if (calcOrderPriceResult.isError()) {
+            return CommonResult.error(calcOrderPriceResult);
+        }
+        // 执行数据拼装
+        return CommonResult.success(CartConvert.INSTANCE.convert(calcOrderPriceResult.getData()));
+    }
+
 }

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

@@ -0,0 +1,15 @@
+package cn.iocoder.mall.order.application.convert;
+
+import cn.iocoder.mall.order.api.bo.CalcOrderPriceBO;
+import cn.iocoder.mall.order.application.vo.UsersOrderConfirmCreateVO;
+import org.mapstruct.Mapper;
+import org.mapstruct.factory.Mappers;
+
+@Mapper
+public interface CartConvert {
+
+    CartConvert INSTANCE = Mappers.getMapper(CartConvert.class);
+
+    UsersOrderConfirmCreateVO convert(CalcOrderPriceBO calcOrderPriceBO);
+
+}

order/order-application/src/main/java/cn/iocoder/mall/order/application/vo/UsersOrderConfirmCreateVO.java

@@ -0,0 +1,152 @@
+package cn.iocoder.mall.order.application.vo;
+
+import cn.iocoder.mall.product.api.bo.ProductAttrAndValuePairBO;
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+import java.util.List;
+
+@Data
+@Accessors(chain = true)
+public class UsersOrderConfirmCreateVO {
+
+    /**
+     * 商品分组数组
+     */
+    private List<ItemGroup> itemGroups;
+    /**
+     * 费用
+     */
+    private Fee fee;
+
+    /**
+     * 商品分组
+     *
+     * 多个商品，参加同一个活动，从而形成分组。
+     */
+    @Data
+    @Accessors(chain = true)
+    public static class ItemGroup {
+
+        // TODO 优惠活动
+        private Object activity;
+        /**
+         * 商品数组
+         */
+        private List<Sku> items;
+
+    }
+
+    @Data
+    @Accessors(chain = true)
+    public static class Sku {
+
+        // SKU 自带信息
+        /**
+         * sku 编号
+         */
+        private Integer id;
+        /**
+         * SPU 信息
+         */
+        private Spu spu;
+        /**
+         * 图片地址
+         */
+        private String picURL;
+        /**
+         * 规格值数组
+         */
+        private List<ProductAttrAndValuePairBO> attrs; // TODO 后面改下
+        /**
+         * 价格，单位：分
+         */
+        private Integer price;
+        /**
+         * 库存数量
+         */
+        private Integer quantity;
+
+        // 非 SKU 自带信息
+
+        /**
+         * 购买数量
+         */
+        private Integer buyQuantity;
+
+    }
+
+    @Data
+    @Accessors(chain = true)
+    public static class Spu {
+
+        /**
+         * SPU 编号
+         */
+        private Integer id;
+
+        // ========== 基本信息 =========
+        /**
+         * SPU 名字
+         */
+        private String name;
+        /**
+         * 分类编号
+         */
+        private Integer cid;
+        /**
+         * 商品主图地址
+         *
+         * 数组，以逗号分隔
+         *
+         * 建议尺寸：800*800像素，你可以拖拽图片调整顺序，最多上传15张
+         */
+        private List<String> picUrls;
+
+    }
+
+    /**
+     * 费用（合计）
+     */
+    @Data
+    @Accessors(chain = true)
+    public static class Fee {
+
+        /**
+         * 总价
+         */
+        private Integer originalTotal;
+        /**
+         * 优惠总价
+         *
+         * 注意，满多少元包邮，不算在优惠中。
+         */
+        private Integer discountTotal;
+        /**
+         * 邮费
+         */
+        private Integer postageTotal;
+        /**
+         * 最终价格
+         *
+         * 计算公式 = 总价 - 优惠总价 + 邮费
+         */
+        private Integer presentTotal;
+
+    }
+
+    /**
+     * 邮费信息
+     */
+    @Data
+    @Accessors(chain = true)
+    public static class Postage {
+
+        /**
+         * 需要满足多少钱，可以包邮。单位：分
+         */
+        private Integer threshold;
+
+    }
+
+}