python 模拟登录新浪微博

<p>首先python2.7要安装easy_install</p><p>然后在 easy_install里面安装 lxml</p><p>最后下面是代码，</p>

# -*- coding: utf-8 -*import urllib2import urllibimport cookielibimport lxml.html as HTMLclass Fetcher(object):    def __init__(self, username=None, pwd=None, cookie_filename=None):        #获取一个保存cookie的对象        self.cj = cookielib.LWPCookieJar()        if cookie_filename is not None:            self.cj.load(cookie_filename)        #将一个保存cookie对象，和一个HTTP的cookie的处理器绑定        self.cookie_processor = urllib2.HTTPCookieProcessor(self.cj)        #创建一个opener，将保存了cookie的http处理器，还有设置一个handler用于处理http的URL的打开        self.opener = urllib2.build_opener(self.cookie_processor, urllib2.HTTPHandler)        #将包含了cookie、http处理器、http的handler的资源和urllib2对象绑定在一起        urllib2.install_opener(self.opener)        self.username = username        self.pwd = pwd        self.headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; rv:14.0) Gecko/20100101 Firefox/14.0.1',                        'Referer':'','Content-Type':'application/x-www-form-urlencoded'}    def get_rand(self, url):        headers = {'User-Agent':'Mozilla/5.0 (Windows;U;Windows NT 5.1;zh-CN;rv:1.9.2.9)Gecko/20100824 Firefox/3.6.9',                   'Referer':''}        req = urllib2.Request(url ,"", headers)        login_page = urllib2.urlopen(req).read()        rand = HTML.fromstring(login_page).xpath("//form/@action")[0]        passwd = HTML.fromstring(login_page).xpath("//input[@type='password']/@name")[0]        vk = HTML.fromstring(login_page).xpath("//input[@name='vk']/@value")[0]        return rand, passwd, vk    def login(self, username=None, pwd=None, cookie_filename=None):        if self.username is None or self.pwd is None:            self.username = username            self.pwd = pwd        assert self.username is not None and self.pwd is not None        url = 'http://3g.sina.com.cn/prog/wapsite/sso/login.php?ns=1&revalid=2&backURL=http%3A%2F%2Fweibo.cn%2F&backTitle=%D0%C2%C0%CB%CE%A2%B2%A9&vt='        # 获取随机数rand、password的name和vk        rand, passwd, vk = self.get_rand(url)        data = urllib.urlencode({'mobile': self.username,                                 passwd: self.pwd,                                 'remember': 'on',                                 'backURL': 'http://weibo.cn/',                                 'backTitle': '新浪微博',                                 'vk': vk,                                 'submit': '登录',                                 'encoding': 'utf-8'})        url = 'http://3g.sina.com.cn/prog/wapsite/sso/' + rand        # 模拟提交登陆        page =self.fetch(url,data)        link = HTML.fromstring(page).xpath("//a/@href")[0]        if not link.startswith('http://'): link = 'http://weibo.cn/%s' % link        # 手动跳转到微薄页面        self.fetch(link,"")        # 保存cookie        if cookie_filename is not None:            self.cj.save(filename=cookie_filename)        elif self.cj.filename is not None:            self.cj.save()        print 'login success!',data    def fetch(self, url,data):        print 'fetch url: ', url        req = urllib2.Request(url,data, headers=self.headers)        return urllib2.urlopen(req).read()# 开始运行fet=Fetcher()fet.login("xxxx","xxxxx")

下面是登录成功的结果：fetch url: http://3g.sina.com.cn/prog/wapsite/sso/login_submit.php?rand=1516239938&backURL=http%3A%2F%2Fweibo.cn%2F&backTitle=%D0%C2%C0%CB%CE%A2%B2%A9&vt=4&revalid=2&ns=1 fetch url: http://weibo.cn/register.php?backURL=http%3A%2F%2Fweibo.cn%2F&backTitle=%D0%C2%C0%CB%CE%A2%B2%A9&vt=4&revalid=2&ns=1&PHPSESSID=ec7c2aba4da371a7cf4722ff7a4d89e9 login success! backTitle=%E6%96%B0%E6%B5%AA%E5%BE%AE%E5%8D%9A&password_4287=&backURL=http%3A%2F%2Fweibo.cn%2F&remember=on&encoding=utf-8&mobile=jakill%40sina.com&vk=4287_7522_1851253375&submit=%E7%99%BB%E5%BD%95