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": "1",
            "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":"123",
        "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