Python实现模拟登录及表单提交的方法

# -*- coding: utf-8 -*- 
import re 
import urllib 
import urllib2 
import cookielib 
#获取CSDN博客标题和正文 
url = "http://blog.csdn.net/[username]/archive/2010/07/05/5712850.aspx" 
sock = urllib.urlopen(url) 
html = sock.read() 
sock.close() 
content = re.findall('(?<=blogstory">).*(?=<p class="right artical)',html,re.S) 
content = re.findall('<script.*>.*</script>(.*)',content[0],re.S) 
title = re.findall('(?<=<title>)(.*)-.* - CSDN.*(?=</title>)',re.S) 
#根据上文获取内容新建表单值 
blog = {'spBlogTitle': title[0].decode('utf-8').encode('gbk'),#百度博客标题 
    'spBlogText': content[0].decode('utf-8').encode('gbk'),#百度博客内容 
    'ct': "1",'cm': "1"} 
del content 
del title 
#模拟登录 
cj = cookielib.CookieJar() 
#用户名和密码 
post_data = urllib.urlencode({'username': '[username]','password': '[password]','pwd': '1'}) 
#登录路径 
path = 'https://passport.baidu.com/?login' 
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj)) 
opener.addheaders = [('User-agent','Opera/9.23')] 
urllib2.install_opener(opener) 
req = urllib2.Request(path,post_data) 
conn = urllib2.urlopen(req) 
#获取百度发布博客的认证令牌 
bd = urllib2.urlopen(urllib2.Request('http://hi.baidu.com/[username]/creat/blog')).read() 
bd = re.findall('(?<=bdstoken" value=").*(?=ct)',bd,re.S) 
blog['bdstoken'] = bd[0][:32] 
#设置分类名 
blog['spBlogCatName'] = 'php' 
#比较表单发布博客 
req2 = urllib2.Request('http://hi.baidu.com/[username]/commit',urllib.urlencode(blog)) 
#查看表单提交后返回内容 
print urllib2.urlopen(req2).read() 
#请将[username]/[password]替换为您的真实用户名和密码