Python调用1688商品详情API接口时可能遇到哪些异常情况？

import requests
import json
import time
import logging
import re
from tenacity import retry, stop_after_attempt, wait_exponential
# 日志配置
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
logger = logging.getLogger(__name__)
# 数据清洗函数
def clean_price(price_str):
    if not price_str:
        return 0.0
    return float(re.sub(r"[^\d.]", "", str(price_str)))
# 带重试和异常处理的调用函数
@retry(
    stop=stop_after_attempt(3),  # 最多重试3次
    wait=wait_exponential(multiplier=1, min=2, max=5),  # 重试间隔2s→4s→5s
    retry=retry_if_exception_type((requests.exceptions.Timeout, requests.exceptions.ConnectionError))
)
def call_1688_api(item_id, app_key, app_secret):
    # 1. 参数校验
    if not item_id or not str(item_id).isdigit():
        logger.error(f"无效商品ID：{item_id}")
        return None
    
    # 2. 构造参数（省略签名生成逻辑，参考之前代码）
    params = {
        "app_key": app_key,
        "method": "alibaba.item.get",
        "timestamp": time.strftime("%Y-%m-%d %H:%M:%S"),
        "format": "json",
        "v": "2.0",
        "sign_method": "md5",
        "item_id": item_id,
        "fields": "item_id,title,price,min_order_quantity"
    }
    # --- 签名生成逻辑 ---
    # params["sign"] = generate_1688_sign(params)
    
    # 3. 发起请求
    try:
        response = requests.get(
            "https://gw.api.1688.com/openapi/param2/1/alibaba.item.get/2.0",
            params=params,
            timeout=10,
            headers={"User-Agent": "Mozilla/5.0"}
        )
        response.encoding = "utf-8"
        
        # 4. 校验响应格式
        if response.headers.get("Content-Type") != "application/json":
            logger.error(f"非JSON响应：{response.text[:200]}")
            return None
        
        # 5. 解析JSON
        result = json.loads(response.text)
        
        # 6. 处理接口错误
        if result.get("code") != 0:
            error = result["data"]["error_response"]
            error_msg = f"接口错误：{error['msg']}（错误码：{error['sub_code']}）"
            logger.error(f"商品ID {item_id}：{error_msg}")
            # 限流错误特殊处理：延迟后终止重试
            if error.get("sub_code") == "isv.api-rate-limit-exceeded":
                time.sleep(5)
                return None
            raise Exception(error_msg)
        
        # 7. 解析并清洗数据
        item = result["data"]["item_get_response"]["item"]
        return {
            "item_id": item.get("item_id"),
            "title": item.get("title"),
            "price": clean_price(item.get("price")),
            "min_order_quantity": int(item.get("min_order_quantity", 1))
        }
    
    except json.JSONDecodeError as e:
        logger.error(f"JSON解析失败：{item_id}，响应：{response.text[:200]}")
        return None
    except KeyError as e:
        logger.error(f"字段缺失：{item_id}，缺失字段：{e}")
        return None
    except ValueError as e:
        logger.error(f"数据类型转换失败：{item_id}，错误：{e}")
        return None
    except Exception as e:
        logger.error(f"未知异常：{item_id}，错误：{e}")
        raise  # 非预期异常抛出，便于排查