如何使用 Python 登录网页并检索 cookie 以供以后使用? [英] How to use Python to login to a webpage and retrieve cookies for later usage?

问题描述

我想使用 python 下载和解析网页，但要访问它，我需要设置几个 cookie.因此，我需要先通过 https 登录到网页.登录时刻涉及向/login.php 发送两个 POST 参数(用户名、密码).在登录请求期间，我想从响应标头中检索 cookie 并存储它们，以便我可以在请求中使用它们来下载网页/data.php.

我将如何在 python(最好是 2.6)中做到这一点?如果可能，我只想使用内置模块.

解决方案

import urllib, urllib2, cookielib用户名 = '我的用户'密码 = '我的密码'cj = cookielib.CookieJar()开瓶器 = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))login_data = urllib.urlencode({'用户名':用户名，'j_password':密码})opener.open('http://www.example.com/login.php', login_data)resp = opener.open('http://www.example.com/hiddenpage.php')打印 resp.read()

resp.read() 是您要打开的页面的直接 html，您可以使用 opener 使用会话 cookie 查看任何页面.>

I want to download and parse webpage using python, but to access it I need a couple of cookies set. Therefore I need to login over https to the webpage first. The login moment involves sending two POST params (username, password) to /login.php. During the login request I want to retrieve the cookies from the response header and store them so I can use them in the request to download the webpage /data.php.

How would I do this in python (preferably 2.6)? If possible I only want to use builtin modules.

解决方案

import urllib, urllib2, cookielib

username = 'myuser'
password = 'mypassword'

cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
login_data = urllib.urlencode({'username' : username, 'j_password' : password})
opener.open('http://www.example.com/login.php', login_data)
resp = opener.open('http://www.example.com/hiddenpage.php')
print resp.read()

resp.read() is the straight html of the page you want to open, and you can use opener to view any page using your session cookie.

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