使用Python中的cookielib模拟登录网站

前面简单提到了 python/' target='_blank'>python 模拟登录的程序，但是没写清楚，这里再补上一个带注释的 Python 模拟登录的示例程序。简单说一下流程：先用cookielib获取cookie，再用获取到的cookie，进入需要登录的网站。

 # -*- coding: utf-8 -*- # !/usr/bin/python  import urllib2 import urllib import cookielib import re  auth_url = 'http://www.nowamagic.net/' home_url = 'http://www.nowamagic.net/'; # 登陆用户名和密码 data={   "username":"nowamagic",   "password":"pass" } # urllib进行编码 post_data=urllib.urlencode(data) # 发送头信息 headers ={   "Host":"www.nowamagic.net", "Referer": "http://www.nowamagic.net" } # 初始化一个CookieJar来处理Cookie cookieJar=cookielib.CookieJar() # 实例化一个全局opener opener=urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJar)) # 获取cookie req=urllib2.Request(auth_url,post_data,headers) result = opener.open(req) # 访问主页 自动带着cookie信息 result = opener.open(home_url) # 显示结果 print result.read()

再附带几个示例程序：

1. 使用已有的cookie访问网站

import cookielib, urllib2  ckjar = cookielib.MozillaCookieJar(os.path.join('C:\Documents and Settings\tom\Application Data\Mozilla\Firefox\Profiles\h5m61j1i.default', 'cookies.txt'))  req = urllib2.Request(url, postdata, header)  req.add_header('User-Agent', \   'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)')  opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(ckjar) )  f = opener.open(req) htm = f.read() f.close()

2. 访问网站获得cookie，并把获得的cookie保存在cookie文件中

 import cookielib, urllib2  req = urllib2.Request(url, postdata, header) req.add_header('User-Agent', \   'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)')  ckjar = cookielib.MozillaCookieJar(filename) ckproc = urllib2.HTTPCookieProcessor(ckjar)  opener = urllib2.build_opener(ckproc)  f = opener.open(req) htm = f.read() f.close()  ckjar.save(ignore_discard=True, ignore_expires=True)

3. 使用指定的参数生成cookie,并用这个cookie访问网站

 import cookielib, urllib2  cookiejar = cookielib.CookieJar() urlOpener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookiejar)) values = {'redirect':", 'email':'abc@abc.com',      'password':'password', 'rememberme':", 'submit':'OK, Let Me In!'} data = urllib.urlencode(values)  request = urllib2.Request(url, data) url = urlOpener.open(request) print url.info() page = url.read()  request = urllib2.Request(url) url = urlOpener.open(request) page = url.read() print page