调用LiveScore API触发JSONDecodeError问题求助

开发从LiveScore获取赛事信息的Python脚本时，遇到JSONDecodeError: Expecting value: line 1 column 1 (char 0)错误。

报错堆栈信息 #

File "/home/sop/.local/lib/python3.8/site-packages/sopel/bot.py", line 763, in call_rule
    rule.execute(sopel, trigger)
  File "/home/sop/.local/lib/python3.8/site-packages/sopel/plugins/rules.py", line 1057, in execute
    exit_code = self._handler(bot, trigger)
  File "/home/sop/.local/lib/python3.8/site-packages/sopel/plugin.py", line 1071, in guarded
    return function(bot, trigger, *args, **kwargs)
  File "/home/sop/.sopel/plugins/livescores.py", line 310, in var
    data = get_match_info(id)
  File "/home/sop/.sopel/plugins/livescores.py", line 82, in get_match_info
    json = requests.get(url, headers=headers).json()
  File "/home/sop/.local/lib/python3.8/site-packages/requests/models.py", line 900, in json
    return complexjson.loads(self.text, **kwargs)
  File "/usr/lib/python3.8/json/__init__.py", line 357, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.8/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.8/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

相关代码片段 #

def get_match_info(id):
    data = {}
    url = f'https://prod-public-api.livescore.com/v1/api/app/match/soccer/{id}/0.0'
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0',
        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'Accept-Language': 'en-GB,en;q=0.5',
        'Connection': 'keep-alive',
        'Upgrade-Insecure-Requests': '1',
        'Cache-Control': 'max-age=0',
        'TE': 'Trailers',
    }
    json = requests.get(url, headers=headers).json()
    kickoff = datetime.datetime.strptime(str(json['Esd']), '%Y%m%d%H%M%S')
    kickoff_utc = kickoff.replace(tzinfo=timezone('UTC'))
    kickoff_ro = kickoff_utc.astimezone(timezone('Europe/Bucharest'))
    data['country'] = json['Stg']['Cnm']
    data['Esd'] = json['Esd']
    data['league'] = json['Stg']['Snm']
    if json['Eps'] == 'NS':
        data['time'] = ("Kick Off: " + str(kickoff_ro.time())[:-3])
    else:
        data['time'] = json['Eps']
    data['home_team'] = json['T1'][0]['Nm']
    data['home_score'] = json['Tr1'] if "Tr1" in json else "0"
    data['away_team'] = json['T2'][0]['Nm']
    data['away_score'] = json['Tr2'] if "Tr2" in json else "0"
    data['refs'] = json['Refs'][0]['Nm'] if "Refs" in json else 'VAR'

    return data

解决思路 #

这个错误说明requests.get()返回的内容不是有效JSON，大概率是请求失败、返回HTML错误页或空内容，按以下步骤排查修复：

• 先验证请求状态
  在调用.json()前先检查响应状态码，触发HTTP错误提示：

  response = requests.get(url, headers=headers)
  response.raise_for_status()  # 若返回403/404/503等会直接抛出异常
  

  如果是403拒绝访问，可能需要更新请求头（比如添加Referer字段）、更换更贴近真实浏览器的UA，或者LiveScore API需要额外认证参数。

• 查看真实响应内容
  报错时打印返回内容，判断是错误页还是空值：

  response = requests.get(url, headers=headers)
  print(response.text)  # 输出前200字符即可，快速定位问题
  

  如果返回Cloudflare验证页、登录提示或404页面，说明请求未通过服务端校验，需要调整请求逻辑。

• 增加异常捕获
  避免脚本直接崩溃，同时记录错误信息：

  try:
      response = requests.get(url, headers=headers)
      response.raise_for_status()
      json_data = response.json()
  except requests.exceptions.HTTPError as e:
      print(f"HTTP请求失败: {e}")
      return None
  except json.JSONDecodeError:
      print(f"无效JSON响应: {response.text[:200]}")
      return None
  

• 优化请求头
  当前Accept字段偏向HTML请求，API接口通常需要JSON类型，修改为：

  'Accept': 'application/json, */*'
  

  同时移除Upgrade-Insecure-Requests这类针对HTML页面的冗余头，让请求更贴合API调用场景。

• 校验赛事ID有效性
  确认传入的id参数是否正确，无效ID可能返回空内容或错误页，可手动在浏览器访问该URL验证是否返回正常JSON。

内容的提问来源于stack exchange，提问作者askingaquestion