def check_aliexpress_item_accuracy(json_data):
    try:
        # 1. 检查根结构
        if "result" not in json_data:
            return False, "返回结构异常，无 result 节点"

        result = json_data["result"]
        if not result:
            return False, "未获取到商品信息"

        # 2. 商品ID校验
        product_id = result.get("productId")
        if not product_id or not str(product_id).isdigit():
            return False, f"商品ID无效：{product_id}"

        # 3. 标题校验
        title = result.get("subject")
        if not title or len(title) < 5:
            return False, "商品标题过短或为空"

        # 4. 价格校验
        price = result.get("price", "0")
        try:
            price_val = float(price)
            if price_val <= 0:
                return False, f"价格异常：{price}"
        except:
            return False, "价格格式错误"

        # 5. 主图链接校验
        img_url = result.get("imageURL")
        if not img_url or "http" not in img_url:
            return False, "商品主图无效"

        # 6. 库存校验
        stock = result.get("stock", 0)
        try:
            if int(stock) < 0:
                return False, "库存不能为负数"
        except:
            pass

        # 7. 店铺/卖家信息
        seller = result.get("sellerName")
        if not seller:
            return False, "卖家信息缺失"

        return True, "速卖通商品数据校验通过"

    except Exception as e:
        return False, f"校验异常：{str(e)}"

{
  "result": {
    "productId": "100500123456789",
    "subject": "Wireless Bluetooth Earbuds Mini Headphones",
    "price": "15.99",
    "currency": "USD",
    "imageURL": "https://ae01.alicdn.com/kf/xxx.jpg",
    "stock": 1500,
    "categoryId": 50909001,
    "sellerName": "Official Store",
    "detailUrl": "https://www.aliexpress.com/item/xxx.html"
  },
  "code": 200,
  "success": true}

# 调用速卖通API获取jsonjson_result = requests.get(api_url, params=params).json()# 校验ok, msg = check_aliexpress_item_accuracy(json_result)print(ok, msg)