Python模拟登录csdn代码

#encoding:utf-8

import urllib
import urllib2
import cookielib
from bs4 import BeautifulSoup

filename = 'cookie_csdn.txt'
#声明一个MozillaCookieJar对象实例来保存cookie，之后写入文件
cookie = cookielib.MozillaCookieJar(filename)
#利用urllib2库的HTTPCookieProcessor对象来创建cookie处理器
handler = urllib2.HTTPCookieProcessor(cookie)
#通过handler来构建opener
opener = urllib2.build_opener(handler)

loginUrl = "https://passport.csdn.net/account/login?from=http://my.csdn.net/my/mycsdn"

#登陆前准备：获取lt和exection
response = opener.open(loginUrl)
soup = BeautifulSoup(response.read())
for input in  soup.form.find_all("input"):
    if input.get("name") == "lt":
        lt = input.get("value")
    if input.get("name") == "execution":
        execution = input.get("value")


#post信息
postdata = {
        "username":"xxxxx@qq.com",
        "password":"xxxxxx",
        "lt":lt,
        "execution":execution,
        "_eventId":"submit"
    }
postdata = urllib.urlencode(postdata)

opener.addheaders = [("User-Agent","Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.63 Safari/537.36")]

#模拟登录,保存cookie到cookie.txt中
result = opener.open(loginUrl, postdata)
#保存cookie
cookie.save(ignore_discard=True, ignore_expires=True)
#登陆后我们随意跳转到博客获取内容
url = "http://blog.csdn.net"
response = opener.open(url)

#读取内容保存到html文件中，方便查看
f = open('csdn_index.html', 'w')
f.write(response.read());
f.close()
print 'ok'

 

 

python 3 代码

 

# -*- coding: UTF-8 -*-
import urllib
from urllib import request
from http import cookiejar
from bs4 import BeautifulSoup

if __name__ == '__main__':

    #设置保存cookie的文件的文件名,相对路径,也就是同级目录下
    filename = 'cookie.txt'
    #创建MozillaCookieJar实例对象
    cookie = cookiejar.MozillaCookieJar(filename)
    #从文件中读取cookie内容到变量
    #cookie.load(filename, ignore_discard=True, ignore_expires=True)
    #利用urllib.request库的HTTPCookieProcessor对象来创建cookie处理器,也就CookieHandler
    handler=request.HTTPCookieProcessor(cookie)
    #通过CookieHandler创建opener
    opener = request.build_opener(handler)

    loginUrl = "https://passport.csdn.net/account/login?from=http://my.csdn.net/my/mycsdn"

    # 登陆前准备：获取lt和exection

    response = opener.open(loginUrl)

    #获取表单隐藏的登录信息
    soup = BeautifulSoup(response.read(), 'lxml')
    for input in soup.form.find_all("input"):
        if input.get("name") == "lt":
            lt = input.get("value")
        if input.get("name") == "execution":
            execution = input.get("value")

    # post信息

    postdata = {
        "username": "xxxxx@qq.com",
        "password": "xxxxx",
        "lt": lt,
        "execution": execution,
        "_eventId": "submit"
    }

    postdata = urllib.parse.urlencode(postdata).encode('utf-8')

    #此用opener的open方法打开网页
    opener.addheaders = [("User-Agent",
                          "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.63 Safari/537.36")]
    result = opener.open(loginUrl, postdata)

    # 保存cookie

    cookie.save(ignore_discard=True, ignore_expires=True)

    # 登陆后我们随意跳转到博客获取内容
    url = "http://my.csdn.net/my/mycsdn"
    response = opener.open(url)
    html = response.read().decode('utf-8')
    f = open('csdn.html', 'w')
    f.write(html)
    f.close()
    print('ok')