本文代码仅供学习交流！
本文用到一个Python的第三方库requests，这个库的简介和安装方法可以参考这里。
本文所用Python版本为2.7，本文选用测试网站为CSDN和51CTO。
一定要注意提交的页面是否正确！
1、CSDN
#encoding=utf-8
import requests
from urllib import urlencode
headers = {
'Host': 'passport.csdn.net',
'Connection': 'keep-alive',
'Accept': '*/*',
'X-Requested-With': 'XMLHttpRequest',
'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.94 Safari/537.36',
'Content-Type': 'application/x-www-form-urlencoded',
'Referer': 'https://passport.csdn.net/account/loginbox?callback=logined&hidethird=1&from=http%3a%2f%2fwww.csdn.net%2f',
'Accept-Encoding': 'gzip,deflate,sdch',
'Accept-Language': 'zh-CN,zh;q=0.8',
}
username = 'yourusername'
password = 'yourpassword'
url = 'https://passport.csdn.net/ajax/accounthandler.ashx?t=log&remember=0&f=http%3A%2F%2Fwww.csdn.net%2F&rand=0.8652449736837298'
form = urlencode({'u':username.encode('utf-8'), 'p':password.encode('utf-8')})
r = requests.get(url=url, headers=headers, data=form, allow_redirects=True)
#通过返回头中是否存在'set-cookie'值判断用户名和密码是否正确
if str(r.headers).lower().find('set-cookie') > -1:
print('right')
else:
print('wrong')2、51CTO
#coding=utf-8
import requests
from urllib import urlencode
headers = {
'Host': 'home.51cto.com',
'Connection': 'keep-alive',
'Cache-Control': 'max-age=0',
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Origin': 'http://home.51cto.com',
'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.94 Safari/537.36',
'Content-Type': 'application/x-www-form-urlencoded',
'Referer': 'http://home.51cto.com/index.php?s=/Index/index/t/1/',
'Accept-Encoding': 'gzip,deflate,sdch',
'Accept-Language': 'zh-CN,zh;q=0.8',
}
email = 'yourusername'
passwd = 'yourpassword'
url = 'http://home.51cto.com/index.php?s=/Index/doLogin'
form = {
'email':email.encode('utf-8'),
'passwd':passwd.encode('utf-8'),
}
r = requests.post(url=url, headers=headers, data=form, allow_redirects=False)
#通过返回的状态码判断用户名和密码是否正确
if 200 == r.status_code:
print('right')
else:
print('wrong')3、IE8的User-Agent。
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)
相关阅读：Requests：为人类设计的HTTP库
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