无法使用Python的请求模块登录ASP.NET网站

我正在尝试使用中的

请求

模块登录网站

在手动登录网站时，我可以看到以下标题以及cookies

请求头：

Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding:gzip,deflate
Accept-Language:en-US,en;q=0.8
Cache-Control:max-age=0
Connection:keep-alive
Content-Length:810
Content-Type:application/x-www-form-urlencoded
Cookie:ASP.NET_SessionId=sfiziz55undlnz452gfc2d55; __utma=120481550.280814175.1411461613.1411461613.1411479534.2; __utmb=120481550.1.10.1411479534; __utmc=120481550; __utmz=120481550.1411461613.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
Host:www11.davidsonsinc.com
Origin:http://www11.davidsonsinc.com
Referer:http://www11.davidsonsinc.com/Login/Login.aspx?ReturnUrl=%2fdefault.aspx
User-Agent:Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.103 Safari/537.36

__EVENTTARGET:
__EVENTARGUMENT:
__LASTFOCUS:
__VIEWSTATE:/wEPDwUKMTY3MDM5MDAxNQ9kFgJmD2QWAgIDD2QWAgIDD2QWAgIBD2QWBAIBD2QWAmYPZBYCAg0PEA8WAh4HQ2hlY2tlZGdkZGRkAgMPDxYCHgdWaXNpYmxlaGRkGAEFHl9fQ29udHJvbHNSZXF1aXJlUG9zdEJhY2tLZXlfXxYBBUBjdGwwMCRDb250ZW50UGxhY2VIb2xkZXJOYXZQYW5lJExlZnRTZWN0aW9uJFVzZXJMb2dpbiRSZW1lbWJlck1lsSFPYUYvIbQNBPs/54aHYcx6GyU=
__VIEWSTATEGENERATOR:1806D926
__EVENTVALIDATION:/wEWBQLy8oGOCwKanaixDwKPr7TsAQKu3uTtBgKs+sa/CQVDEisOu4Iw1m9stXWgAAz9TWQn
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$UserName:Username
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$Password:password
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$RememberMe:on
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$LoginButton:Log In

表单数据：

Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding:gzip,deflate
Accept-Language:en-US,en;q=0.8
Cache-Control:max-age=0
Connection:keep-alive
Content-Length:810
Content-Type:application/x-www-form-urlencoded
Cookie:ASP.NET_SessionId=sfiziz55undlnz452gfc2d55; __utma=120481550.280814175.1411461613.1411461613.1411479534.2; __utmb=120481550.1.10.1411479534; __utmc=120481550; __utmz=120481550.1411461613.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
Host:www11.davidsonsinc.com
Origin:http://www11.davidsonsinc.com
Referer:http://www11.davidsonsinc.com/Login/Login.aspx?ReturnUrl=%2fdefault.aspx
User-Agent:Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.103 Safari/537.36

__EVENTTARGET:
__EVENTARGUMENT:
__LASTFOCUS:
__VIEWSTATE:/wEPDwUKMTY3MDM5MDAxNQ9kFgJmD2QWAgIDD2QWAgIDD2QWAgIBD2QWBAIBD2QWAmYPZBYCAg0PEA8WAh4HQ2hlY2tlZGdkZGRkAgMPDxYCHgdWaXNpYmxlaGRkGAEFHl9fQ29udHJvbHNSZXF1aXJlUG9zdEJhY2tLZXlfXxYBBUBjdGwwMCRDb250ZW50UGxhY2VIb2xkZXJOYXZQYW5lJExlZnRTZWN0aW9uJFVzZXJMb2dpbiRSZW1lbWJlck1lsSFPYUYvIbQNBPs/54aHYcx6GyU=
__VIEWSTATEGENERATOR:1806D926
__EVENTVALIDATION:/wEWBQLy8oGOCwKanaixDwKPr7TsAQKu3uTtBgKs+sa/CQVDEisOu4Iw1m9stXWgAAz9TWQn
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$UserName:Username
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$Password:password
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$RememberMe:on
ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$LoginButton:Log In

请求Cookies

ASP.NET_SessionId: nz452gfc2d55

.ASPXAUTH: 1F5A05237A1AA18795ECA108CE6E70D48FE5CBB5B38D061E0770618F6C069ABA03604335B6209CF8198AD3E98AE934F14056F5C887A92BB099BF38D639A22BC12972DEEE91BCE0BF36239BD1728E228E0E9CA1E5146A6C69E906E177CC8FB27395CE2F56B4013535C62E821384231EF0AD632474D6EBCFCD859882DBE9D420B6A8816BE6

响应Cookies

ASP.NET_SessionId: nz452gfc2d55

.ASPXAUTH: 1F5A05237A1AA18795ECA108CE6E70D48FE5CBB5B38D061E0770618F6C069ABA03604335B6209CF8198AD3E98AE934F14056F5C887A92BB099BF38D639A22BC12972DEEE91BCE0BF36239BD1728E228E0E9CA1E5146A6C69E906E177CC8FB27395CE2F56B4013535C62E821384231EF0AD632474D6EBCFCD859882DBE9D420B6A8816BE6

下面是我使用Python/登录网站时使用的脚本

---

但是我不知道如何登录ASP.NET网站。如何在ASP.NET网站上发布数据？

我最初也使用requests+bs4，但我正在废弃的ASPX网站遇到了类似的问题。我找到了另一个名为wrapps requests+bs4的库。使用此功能，在与ASPX站点交互时，您不再需要手动设置项目，如“\u\u VIEWSTATE”和好友

import requests
from bs4 import BeautifulSoup

URL="http://www11.davidsonsinc.com/Login/Login.aspx"
headers={"User-Agent":"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"}

username="username"
password="password"

s=requests.Session()
s.headers.update(headers)
r=s.get(URL)
soup=BeautifulSoup(r.content)

VIEWSTATE=soup.find(id="__VIEWSTATE")['value']
VIEWSTATEGENERATOR=soup.find(id="__VIEWSTATEGENERATOR")['value']
EVENTVALIDATION=soup.find(id="__EVENTVALIDATION")['value']

login_data={"__VIEWSTATE":VIEWSTATE,
"__VIEWSTATEGENERATOR":VIEWSTATEGENERATOR,
"__EVENTVALIDATION":EVENTVALIDATION,
"ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$UserName":username,
"ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$Password":password,
"ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$LoginButton":"Log In"}

r=s.post(URL, data=login_data)
print r.url

from robobrowser import RoboBrowser

url = ' http://www11.davidsonsinc.com'
login_url = url + '/Login/Login.aspx'

username = "username"
password = "password"

browser = RoboBrowser(history=True)
# This retrieves __VIEWSTATE and friends
browser.open(login_url)

signin = browser.get_form(id='aspnetForm')
signin["ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$UserName"].value = username
signin["ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$Password"].value = password
signin["ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$LoginButton"].value = "Log In"
browser.submit_form(signin)
print browser.url

---

我认为这更干净、更通用。

import requests
from bs4 import BeautifulSoup

url="http://www11.davidsonsinc.com/Login/Login.aspx"

username="username"
password="password"

session = requests.Session()
# Dont botter with headers at first
# s.headers.update(headers)
response = session.get(url)
soup = BeautifulSoup(response.content)
login_data = {}
# get the aspnet state form data needed with bsoup
aspnetstates = ['__VIEWSTATE', '__VIEWSTATEGENERATOR', '__EVENTVALIDATION', '__EVENTTARGET', 
                '__EVENTARGUMENT', '__VIEWSTATEENCRYPTED' ];    
for aspnetstate in aspnetstates: # search for existing aspnet states and get its values 
    result = soup.find('input', {'name': aspnetstate})
    if not (result is None): # when existent (some may not be needed!)
        login_data.update({aspnetstate : result['value']})      

login_data.update(
    {"ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$UserName" : username,
    "ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$Password" : password,
    "ctl00$ContentPlaceHolderNavPane$LeftSection$UserLogin$LoginButton" : "Log In"})

response = session.post(url, data=login_data)

---

谢谢Mohsin，这就是我所看到的，它运行得非常完美。非常感谢！！！：-）我很高兴我能提供帮助这里有更多关于为什么我们需要发送视图状态参数的信息-