spzx-model/src/main/java/com/atguigu/spzx/model/vo/h5/TradeVo.java

@@ -10,11 +10,9 @@ import java.util.List;
 @Data
 @Schema(description = "结算实体类")
 public class TradeVo {
-
     @Schema(description = "结算总金额")
     private BigDecimal totalAmount;
 
     @Schema(description = "结算商品列表")
     private List<OrderItem> orderItemList;
-
 }

spzx-service/service-order/src/main/java/com/atguigu/order/controller/OrderInfoController.java

@@ -38,4 +38,11 @@ public class OrderInfoController {
         OrderInfo orderInfo = orderInfoService.getOrderInfo(orderId);
         return Result.success(orderInfo);
     }
+
+    @Operation(summary = "立即购买")
+    @GetMapping("auth/buy/{skuId}")
+    public Result<TradeVo> buy(@Parameter(name = "skuId", description = "商品skuId", required = true) @PathVariable Long skuId) {
+        TradeVo tradeVo = orderInfoService.buy(skuId);
+        return Result.success(tradeVo);
+    }
 }

spzx-service/service-order/src/main/java/com/atguigu/order/service/OrderInfoService.java

@@ -27,4 +27,12 @@ public interface OrderInfoService {
      * @return OrderInfo
      */
     OrderInfo getOrderInfo(Long orderId);
+
+    /**
+     * 立即购买
+     *
+     * @param skuId 商品Id
+     * @return 结算实体类
+     */
+    TradeVo buy(Long skuId);
 }

spzx-service/service-order/src/main/java/com/atguigu/order/service/impl/OrderInfoServiceImpl.java

@@ -160,4 +160,33 @@ public class OrderInfoServiceImpl implements OrderInfoService {
     public OrderInfo getOrderInfo(Long orderId) {
         return orderInfoMapper.getById(orderId);
     }
+
+    /**
+     * 立即购买
+     *
+     * @param skuId 商品Id
+     * @return 结算实体类
+     */
+    @Override
+    public TradeVo buy(Long skuId) {
+        // 查询商品
+        ProductSku productSku = productFeignClient.getBySkuId(skuId).getData();
+        List<OrderItem> orderItemList = new ArrayList<>();
+        OrderItem orderItem = new OrderItem();
+        orderItem.setSkuId(skuId);
+        orderItem.setSkuName(productSku.getSkuName());
+        orderItem.setSkuNum(1);
+        orderItem.setSkuPrice(productSku.getSalePrice());
+        orderItem.setThumbImg(productSku.getThumbImg());
+        orderItemList.add(orderItem);
+
+        // 计算总金额
+        BigDecimal totalAmount = productSku.getSalePrice();
+        TradeVo tradeVo = new TradeVo();
+        tradeVo.setTotalAmount(totalAmount);
+        tradeVo.setOrderItemList(orderItemList);
+
+        // 返回
+        return tradeVo;
+    }
 }