python Requests.Session() 的连续请求不起作用 [英] Consecutive requests with python Requests.Session() not working

问题描述

我正在尝试这样做，

import requests
s=requests.Session()
login_data = dict(userName='user', password='pwd')
ra=s.post('http://example/checklogin.php', data=login_data)
print ra.content
print ra.headers
ans = dict(answer='5')
f=s.cookies
r=s.post('http://example/level1.php',data=ans,cookies=f)
print r.content

但是第二个 post 请求返回 404 错误，有人可以帮我为什么吗?

But the second post request returns a 404 error, can someone help me why ?

推荐答案

在最新版本的 requests 中，sessions 对象配备了 Cookie Persistence，查看请求 Sessions ojbects docs.所以你不需要人为地添加cookie.只是

In the latest version of requests, the sessions object comes equipped with Cookie Persistence, look at the requests Sessions ojbects docs. So you don't need add the cookie artificially. Just

import requests
s=requests.Session()
login_data = dict(userName='user', password='pwd')
ra=s.post('http://example/checklogin.php', data=login_data)
print ra.content
print ra.headers
ans = dict(answer='5')
r=s.post('http://example/level1.php',data=ans)
print r.content

只需打印 cookie 即可查看您是否登录.

Just print the cookie to look up wheather you were logged.

for cookie in s.cookies:
    print (cookie.name, cookie.value)

示例站点是您的站点吗?
如果不是，则该站点可能会拒绝机器人/爬虫！
您可以像使用浏览器一样更改请求的用户代理.

And is the example site is yours?
If not maybe the site reject the bot/crawler !
And you can change your requests's user-agent as looks likes you are using a browser.

例如:

import requests
s=requests.Session()
headers = {
    'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.62 Safari/537.36'
}
login_data = dict(userName='user', password='pwd')
ra=s.post('http://example/checklogin.php', data=login_data, headers=headers)
print ra.content
print ra.headers
ans = dict(answer='5')
r=s.post('http://example/level1.php',data=ans, headers = headers)
print r.content

这篇关于python Requests.Session() 的连续请求不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！