Use the cloud code to crack the problem of authentication code encountered during login

Cloud code address ：

Crawl the target website , It is an ancient poetry website
https://so.gushiwen.org/user/login.aspx?from=http://so.gushiwen.org/user/collect.aspx
Yunda code is a coding platform ,
Yunda code usage process

• register ： Ordinary developers and users
• Sign in ：
  1 . Normal user login : Query whether the user has any remaining points
  2 . Developer login ：
  - Create a software ,： My documents –》 Add software first –》 Enter the software name –》 Submit （appid and appkey）
  - Download sample code ,： Developing documents –》 Click to download ： Cloud coding interface DLL–》PythonHTTP Sample download
  Custom functions in code blocks login Inside email and pwd Is the login account and password , You can log in to your own user account , To climb , Be careful ：： Certain points will be deducted for each crawl , How much to deduct There are certain regulations ：http://www.yundama.com/price.html This is the link to the price list of points , You can get to know !

by the way ！ The other thing is that , When logging in again, you must create a session , Otherwise, the code will be written again No Problem**！ All are single , Be sure to carry cookie To visit ,

# -*- coding = utf-8 -*-
#@time :2020/5/18 13:39
#Author :Song
#@file  Ancient poetry network verification code identification .py
#@Software: PyCharm


# Download the verification code image to the local 

import requests
from fake_useragent import UserAgent
from lxml import etree
from webspider.day18.verification_code import get_code

def indexHTML(s):
    url ="https://so.gushiwen.org/user/login.aspx?from="
    r =s.get(url=url,headers={
    "User-Agent":UserAgent().chrome})
    return r.text

def download_image(html,s):
    tree = etree.HTML(html)
    # Gets the captcha image 
    image_src =tree.xpath('//*[@id="imgCode"]/@src')[0]
    # A complete mosaic image url
    image_url ="https://so.gushiwen.org" + image_src
    r =s.get(url=image_url,headers={
    "User-Agent":UserAgent().random})
    with open("yzm.png","wb")as fp:
        fp.write(r.content)
    code =get_code("yzm.png",1004)
    print(code)
    # print(code)
    # Command parsing 
    viewstate = __VIEWSTATE = tree.xpath('//*[@id="aspnetForm"]/div[1]/input/@value')[0]
    viewstategenerator = __VIEWSTATEGENERATOR =tree.xpath('//*[@id="aspnetForm"]/div[2]/input/@value')[0]
    # print(viewstategenerator)
    # print(viewstate)
    return code,viewstate,viewstategenerator


def login(code,viewstate,viewstategenerator,s):
    post_url="https://so.gushiwen.org/user/login.aspx?from="
    formdata={
    
    "__VIEWSTATE":viewstate,
    "__VIEWSTATEGENERATOR":viewstategenerator,
    "from":"",
    "email":"**********",
    "pwd":"**********",
    "wasd":"",
    "code":code,
    "denglu":" Sign in ",
    }
    r =s.post(url=post_url,headers={
    "User-Agent":UserAgent().chrome},data=formdata)
    # print(r.text)
    with open("gs.html","w",encoding="utf8")as fp:
        fp.write(r.text)
def main():
    # Create a session , To log in 
    s =requests.Session()
    # The ancient poetry website did not log on to the previous page , Get page information , To download the verification code image 
    html = indexHTML(s)
    # Download verification code ,
    code,viewstate,viewstategenerator = download_image(html,s)
    # Sign in 
    login(code,viewstate,viewstategenerator,s)

if __name__ == '__main__':
    main()