Python 模拟验证码登陆

Python 模拟验证码登陆

• 获取登录请求
  • 打开preserve log
  • 点击登录，获取登录请求(post)
• 验证码地址可变
  • 爬取页面验证码地址，获取验证码内容
  • 将data进行post请求
• 验证码地址不变，而内容随机变化

  • 设置session进行验证码的get请求并下载图片进行识别得到验证码的识别结果，再利用这个sesson进行post请求，把账号密码和验证码识别结果的表单数据进行post从而模拟登录

    • 
    • 如果请求中产生了cookie，则该cookie会被自动存储/携带在该session对象中
    • session可以进行请求的发送

    sesson =requests.session()
    code_img_data = sesson.get(url=url,headers=headers).content
    #
    #
    #
    response = sesson.post(url = log_url,headers = headers,data=data)

模拟古诗词网登录
codet.py:

#!/usr/bin/env python
# coding:utf-8

import requests
from hashlib import md5

class Chaojiying_Client(object):

    def __init__(self, username, password, soft_id):
        self.username = username
        password =  password.encode('utf8')
        self.password = md5(password).hexdigest()
        self.soft_id = soft_id
        self.base_params = {
            'user': self.username,
            'pass2': self.password,
            'softid': self.soft_id,
        }
        self.headers = {
            'Connection': 'Keep-Alive',
            'User-Agent': 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0)',
        }

    def PostPic(self, im, codetype):
        """
        im: 图片字节
        codetype: 题目类型 参考 http://www.chaojiying.com/price.html
        """
        params = {
            'codetype': codetype,
        }
        params.update(self.base_params)
        files = {'userfile': ('ccc.jpg', im)}
        r = requests.post('http://upload.chaojiying.net/Upload/Processing.php', data=params, files=files, headers=self.headers)
        return r.json()

    def ReportError(self, im_id):
        """
        im_id:报错题目的图片ID
        """
        params = {
            'id': im_id,
        }
        params.update(self.base_params)
        r = requests.post('http://upload.chaojiying.net/Upload/ReportError.php', data=params, headers=self.headers)
        return r.json()

#
# if __name__ == '__main__':
#     chaojiying = Chaojiying_Client('超级鹰用户名', '超级鹰用户名的密码', '96001')	#用户中心>>软件ID 生成一个替换 96001
#     im = open('a.jpg', 'rb').read()													#本地图片文件路径 来替换 a.jpg 有时WIN系统须要//
#     print chaojiying.PostPic(im, 1902)												#1902 验证码类型  官方网站>>价格体系 3.4+版 print 后要加()

main.py:

from codet import Chaojiying_Client
import requests
from lxml import etree
if __name__ == '__main__':
   headers = {
       "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36"
               }
   url = 'https://so.gushiwen.cn/user/login.aspx?from=http://so.gushiwen.cn/user/collect.aspx'
   #利用session保存cookie信息
   sesson =requests.session()
   #登录界面
   log_page_text = sesson.get(url=url,headers=headers).text
   tree = etree.HTML(log_page_text)
   #验证码图片链接
   code_img_url = 'https://so.gushiwen.cn'+tree.xpath('//img[@id="imgCode"]/@src')[0]
   print(code_img_url)
   #获取验证码内容，每次请求验证码内容都会更改，利用session保存最后一次更新的cookie
   code_img_data = sesson.get(code_img_url).content
   with open('code.jpg','wb') as fp:
       fp.write(code_img_data)

   chaojiying = Chaojiying_Client('wi0i0i', '********', '920413')	#用户中心>>软件ID 生成一个替换 96001
   im = open('code.jpg', 'rb').read()													#本地图片文件路径 来替换 a.jpg 有时WIN系统须要//
   #print (chaojiying.PostPic(im, 1902)	)
   pic_str = chaojiying.PostPic(im, 1902)['pic_str']
   print(pic_str)
   #点击登录按钮，产生的请求
   headers = {
       'referer': 'https: // so.gushiwen.cn / user / login.aspx?from=http: // so.gushiwen.cn / user / collect.aspx',
       "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36"
   }
   log_url = 'https://so.gushiwen.cn/user/login.aspx?from=http%3a%2f%2fso.gushiwen.cn%2fuser%2fcollect.aspx'
   data = {
       '__VIEWSTATE': 'AVP2UqKeeCzJep4Lb05tbFRvGOQjFCxVHE / EFBHpF + W + +3eo2R8m6hLLw + FLJNXGm1wVguwWRixwR3U84ig2ifnQJyjcBkLZdLzBWvC7t5XiZvnXcLnVaofhEtk =',
   '__VIEWSTATEGENERATOR': 'C93BE1AE',
   'from': 'http://so.gushiwen.cn/user/collect.aspx',
   'email': '3059519959@qq.com',
   'pwd': '*********',
   'code': pic_str,
   'denglu': '登录'
   }
   #利用session保存的cookie，保持会话，保证验证码内容一致，
   response = sesson.post(url = log_url,headers = headers,data=data)
   print(response.status_code)
   with open('log.html','w',encoding='utf-8') as fp:
       fp.write(response.text)

• 代理
  • 请求参数- proxies =