减库存

src/main/java/com/example/afrishop_v3/controllers/OrderController.java

@@ -200,19 +200,24 @@ public class OrderController extends Controller {
                 return new Result<>(ResultCodeEnum.SERVICE_ERROR.getCode(), "Missing information !");
             TbCfStationItem stationItem = byId.get();
             //减库存 Inventory reduction
-            subCount(itemId, itemNum);
+            boolean success = subCount(itemId, itemNum);
+            if (!success) {
+                return new Result<>(v_code, "Goods in short stock!");
+            }
             allByUserId.add(getCart(stationItem, itemSku, itemNum, itemPrice));
 
         } else {
             System.out.println(Arrays.toString(tbCfOrder.getIds()));
             allByUserId = cartRepository.findAllByCartRecordIdIn(tbCfOrder.getIds());
-            allByUserId.forEach(cart -> {
+            for (TbCfCartRecordR cart : allByUserId) {
                 String id = cart.getItemId();
                 Integer num = cart.getItemNum();
-                subCount(id, num);
-            });
+                boolean success = subCount(id, num);
+                if (!success) {
+                    return new Result<>(v_code, "Goods in short stock!");
+                }
+            }
         }
-
 
         String addressId = tbCfOrder.getDeliveryAddressId();
 
@@ -297,14 +302,20 @@ public class OrderController extends Controller {
     }
 
     //减库存 Inventory reduction
-    public void subCount(String itemId, Integer num) {
+    public boolean subCount(String itemId, Integer num) {
+        boolean success = false;
         logger.info("减库存操作开始...");
         Optional<TbCfStationItem> itemOptional = itemRepository.findById(itemId);
         if (itemOptional.isPresent()) {
             TbCfStationItem item = itemOptional.get();
+            if (item.getItemCount() <= 0 || num > item.getItemCount()) {
+                success = false;
+            }
             logger.info("商品[" + item.getItemId() + "]原库存：" + item.getItemCount() + "，购买数量：" + num + "，现库存：" + (item.getItemCount() - num));
             item.setItemCount(item.getItemCount() - num);
+            success = true;
         }
+        return success;
     }
 
     @GetMapping