aiohttp.client_exceptions.ContentTypeError: 0：json(content_type=‘??‘)

Posted 2021-08-21 ZSYL

aiohttp.client_exceptions

• 问题
• 解决

问题

   # 获取异步requests
    async with aiohttp.ClientSession() as session:
        async with session.post(url, headers=headers, data=data) as resp:
            # 写入数据
            csvWriter.writerow(await resp.json())  # 读取内容是异步的，需要挂起
            print('库编号', data['p'], '爬取完毕！')

from aiohttp_requests import requests
 
async def req(URL):
    headers = {"Accept": 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
        "Accept-Language": "zh-CN,zh;q=0.9", "Host": "xin.baidu.com",
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36", }
    resp = await requests.get(URL,headers=headers,timeout=10,verify_ssl=False)
    resp_text = await resp.json(encoding='utf-8')
    return resp_text
 
if __name__ == "__main__":
    print("HELLO WORLD")
    URL = "https://xin.baidu.com/detail/basicAjax?pid=xlTM-TogKuTw9PzC-u6VwZxUBuZ5J7WMewmd"
    loop = asyncio.get_event_loop()
    loop.run_until_complete(req(URL))

csvWriter.writerow(await resp.json())

运行上面的程序会报错

解决

ContentTypeError：类型错误

在resp.json()：传入编码文本类型参数即可：

resp.json(content_type='text/html',encoding='utf-8')

参考：Link

衷心感谢！