python登录豆瓣并发帖的方法

本文实例讲述了python登录豆瓣并发帖的方法。分享给大家供大家参考。具体如下：

这里涉及urllib、urllib2及cookielib常用方法的使用

登录豆瓣，由于有验证码，采取的办法是将验证码图片下载到同目录下，查看图片后输入验证码即可登录、发帖

帖子内容写死在代码中了

    # -- coding:gbk --
    import sys, time, os, re
    import urllib, urllib2, cookielib
    loginurl = 'https://www.douban.com/accounts/login'
    cookie = cookielib.CookieJar()
    opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie))
    params = {
    "form_email":"your email",
    "form_password":"your password",
    "source":"index_nav" #没有的话登录不成功
    }
    #从首页提交登录
    response=opener.open(loginurl, urllib.urlencode(params))
    #验证成功跳转至登录页
    if response.geturl() == "https://www.douban.com/accounts/login":
      html=response.read()
      #验证码图片地址
      imgurl=re.search('<img id="captcha_image" src="(.+?)" alt="captcha" class="captcha_image"/>', html)
      if imgurl:
        url=imgurl.group(1)
        #将图片保存至同目录下
        res=urllib.urlretrieve(url, 'v.jpg')
        #获取captcha-id参数
        captcha=re.search('<input type="hidden" name="captcha-id" value="(.+?)"/>' ,html)
        if captcha:
          vcode=raw_input('请输入图片上的验证码：')
          params["captcha-solution"] = vcode
          params["captcha-id"] = captcha.group(1)
          params["user_login"] = "登录"
          #提交验证码验证
          response=opener.open(loginurl, urllib.urlencode(params))
          ''' 登录成功跳转至首页 '''
          if response.geturl() == "http://www.douban.com/":
            print 'login success ! '
            print '准备进行发帖'
            p={"ck":""}
            c = [c.value for c in list(cookie) if c.name == 'ck']
            if len(c) > 0:
              p["ck"] = c[0].strip('"')    
            addtopicurl="http://www.douban.com/group/python/new_topic"
            res=opener.open(addtopicurl)
            html=res.read()
            m= re.search('<input type="hidden" name="topic_id" value="(.+?)">', html) 
            p["topic_id"] = m.group(1)
            m= re.search('<input type="hidden" name="topic_id_sig" value="(.+?)">', html) 
            p["topic_id_sig"] = m.group(1)
            p["rev_title"] = 'title'
            p["rev_text"] = 'send body'
            p["rev_submit"] = '好了，发言'
            request=urllib2.Request(addtopicurl)
            request.add_header("User-Agent","Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11")
            request.add_header("Accept-Charset", "GBK,utf-8;q=0.7,*;q=0.3")
            request.add_header("Origin", "http://www.douban.com")
            request.add_header("Referer", "http://www.douban.com/group/python/new_topic")
            opener.open(request, urllib.urlencode(p))

希望本文所述对大家的Python程序设计有所帮助。