python - requests headers 解码

问题描述

问 题

我需要使用python的requests 下载一些文件，但是文件是中文名的

chrome调试看出来的文件名是

Content-Disposition:attachment; filename=%C9%F1%BC%B6%BB%F5%C0%C9.txt

requests 下载显示的却是乱码

import requests
url = 'http://www.23us.so/modules/article/txtarticle.php?id=156'
req = requests.head(url)
headers = req.headers
print( headers.get('Content-Disposition'))

>> attachment; filename=ÇàÔÆÏÉ·.txt

我试过设置req.encoding 没有效果

怎么把header中的文字恢复出来，requests中似乎没有相关方法
各位可以调试一下

解决方案

咳咳, 你应该早点放出具体链接地址的, 我跟进下方法, 放码:

url = 'http://www.23us.so/modules/article/txtarticle.php?id=156'
req = requests.head(url)
headers = req.headers
print(headers.get('Content-Disposition').encode(req.encoding).decode('gbk'))  # gb2312也可以正确解码

结果:

attachment; filename=青云仙路.txt

---

你让req.encoding自己猜目标的编码方式即可.
requests模块的models.py第 769 行注释说的很清楚, 人家可以自动检测目标网页内容的编码类型, 而具体负责检测编码的代码在这里universaldetector.py
所以我们只需要利用下这个特性编码然后再按utf-8解码即可, 看代码:

import requests


url = "http://www.weather.com.cn/data/cityinfo/101010100.html"
req = requests.get(url)
print(req.text)
print(req.encoding)
print(req.text.encode(req.encoding))
print(req.text.encode(req.encoding).decode('utf-8'))

结果:

{"weatherinfo":{"city":"北京","cityid":"101010100","temp1":"-2℃","temp2":"16℃","weather":"晴","img1":"n0.gif","img2":"d0.gif","ptime":"18:00"}}
ISO-8859-1
b'{"weatherinfo":{"city":"\xe5\x8c\x97\xe4\xba\xac","cityid":"101010100","temp1":"-2\xe2\x84\x83","temp2":"16\xe2\x84\x83","weather":"\xe6\x99\xb4","img1":"n0.gif","img2":"d0.gif","ptime":"18:00"}}'
{"weatherinfo":{"city":"北京","cityid":"101010100","temp1":"-2℃","temp2":"16℃","weather":"晴","img1":"n0.gif","img2":"d0.gif","ptime":"18:00"}}

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