python登录aspx网站

1.安装模块

2.准备aspx登录页面

3.示例代码

 #coding:utf-8
 import re
 from bs4 import BeautifulSoup
 import gzip
 import urllib.request
 import urllib.parse
 import http.cookiejar
 import ssl
 import time

 loginurl='http://192.168.0.108:8005/login.aspx'
 vercodeurl='http://192.168.0.108:8005/vercode.aspx?r=%d'

 heads={
             "Accept":"text/html, application/xhtml+xml, */*",
             "Accept-Language":"zh-CN",
             "User-Agent":"Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0",
             "Accept-Encoding": "gzip, deflate",
             "Host": "http://192.168.0.108:8005",
             "DNT": "",
             "Connection": "Keep-Alive"
             }

 def get_opener(heads):
     cj=http.cookiejar.CookieJar()
     pro=urllib.request.HTTPCookieProcessor(cj)
     opener=urllib.request.build_opener(pro)
     header=[]
     for key,value in heads.items():
         header.append((key,value))
     opener.addheaders=header
     return opener

 def ungzip(data):
     try:
         data=gzip.decompress(data)
         #with open("222.txt",'wb') as file:
              #file.write(data)
     except:
         pass
     return data    

 if __name__=="__main__":
     ssl._create_default_https_context = ssl._create_unverified_context
     opener=get_opener(heads)
     op=opener.open(loginurl)
     data1=op.read()
     data1=ungzip(data1).decode('utf-8')
     soup=BeautifulSoup(data1,"html.parser")

     VIEWSTATE=soup.find("input",{'type':'hidden','name':'__VIEWSTATE'}).get("value")
     VIEWSTATEGENERATOR=soup.find("input",{'type':'hidden','name':'__VIEWSTATEGENERATOR'}).get("value")
     EVENTVALIDATION=soup.find("input",{'type':'hidden','name':'__EVENTVALIDATION'}).get("value")

     '''正则获取隐藏值
     regular = {
         'viewstate': re.compile(r'id="__VIEWSTATE" value="(.+)" />'),
         'eventvalidation': re.compile(r'id="__EVENTVALIDATION" value="(.+)" />')
     }
     print(regular['viewstate'].findall(data1)[0])
     '''

     vercodedata=opener.open(vercodeurl% (time.time() * 1000)).read()
     with open("auto100.jpeg",'wb') as file:
         file.write(vercodedata)
     yzm=input("请输入验证码:")
     postdata={
         "__VIEWSTATE":VIEWSTATE,
         "__VIEWSTATEGENERATOR":VIEWSTATEGENERATOR,
         "__EVENTVALIDATION":EVENTVALIDATION,
         "username":"sulin",
         "userpwd":"",
         "btnlogin":"登录",
         "vercode":yzm
         }
     postdata=urllib.parse.urlencode(postdata).encode('utf-8')

     op2=opener.open(loginurl,postdata)
     login_data=op2.read()
     data=ungzip(login_data).decode("utf-8")
     print(data)
    

4.测试结果