前面簡單提到了 Python 模擬登錄的程序，但是沒寫清楚，這里再補上一個帶注釋的 Python 模擬登錄的示例程序。簡單說一下流程：先用cookielib獲取cookie，再用獲取到的cookie，進入需要登錄的網站。

 # -*- 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/'; # 登陸用戶名和密碼 data={   "username":"nowamagic",   "password":"pass" } # urllib進行編碼 post_data=urllib.urlencode(data) # 發送頭信息 headers ={   "Host":"www.nowamagic.net", "Referer": "http://www.nowamagic.net" } # 初始化一個CookieJar來處理Cookie cookieJar=cookielib.CookieJar() # 實例化一個全局opener opener=urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJar)) # 獲取cookie req=urllib2.Request(auth_url,post_data,headers) result = opener.open(req) # 訪問主頁 自動帶著cookie信息 result = opener.open(home_url) # 顯示結果 print result.read()

再附帶幾個示例程序：

1. 使用已有的cookie訪問網站

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. 訪問網站獲得cookie，并把獲得的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. 使用指定的參數生成cookie,并用這個cookie訪問網站

 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