生成订单

src/main/java/com/org/flashsalesystem/service/ProductService.java

@@ -261,7 +261,22 @@ public class ProductService {
                 productRepository.increaseStock(productId, quantity);
             } else if ("decrease".equals(operation)) {
                 // 减少库存
-                Long currentStock = (Long) redisService.get(stockKey);
+                Object stockObj = redisService.get(stockKey);
+                Long currentStock = null;
+                if (stockObj != null) {
+                    if (stockObj instanceof Integer) {
+                        currentStock = ((Integer) stockObj).longValue();
+                    } else if (stockObj instanceof Long) {
+                        currentStock = (Long) stockObj;
+                    } else if (stockObj instanceof String) {
+                        try {
+                            currentStock = Long.parseLong((String) stockObj);
+                        } catch (NumberFormatException e) {
+                            log.error("库存数据格式错误: 商品ID={}, 数据={}", productId, stockObj);
+                            return false;
+                        }
+                    }
+                }
                 if (currentStock == null || currentStock < quantity) {
                     log.warn("库存不足: 商品ID={}, 当前库存={}, 需要扣减={}", productId, currentStock, quantity);
                     return false;