问题
I am scraping LAN data using BeautifulSoup4 and Python requests for a company project. Since the site has a login interface, I am not authorized to access the data. The login interface is a pop-up that doesn't allow me to access the page source or inspect the page elements without log in. the error I get is this-
Access Error: Unauthorized Access to this document requires a User ID
This is a screen-shot of the pop-up box (The blackened part is sensitive information). It has not information about the html tags at all, hence I cannot auto-login via python.
I have tried requests_ntlm, selenium, python requests and even ParseHub but it did not work. I have been stuck in this phase for a month now! Please, any help would be appreciated.
Below is my initial code:
import requests
from requests_ntlm import HttpNtlmAuth
from bs4 import BeautifulSoup
r = requests.get("www.amazon.in")
from urllib.request import Request, urlopen
req = Request('http://www.cmegroup.com/trading/products/#sortField=oi&sortAsc=false&venues=3&page=1&cleared=1&group=1', headers={'User-Agent': 'Mozilla/5.0'})
webpage = urlopen(req).read()
print r.content
r = requests.get("www.amazon.in",auth=HttpNtlmAuth('user_name','passwd'))
print r.content*
s_data = BeautifulSoup(r.content,"lxml")*
print s_data.content
Error:
Document Error: Unauthorized
Access to this document requires a User IDAccess Error: Unauthorized
This is the error I get when BeautifulSoup tries to access the data after I have manually logged into the site.
回答1:
Have you considered using mechanise?
import mechanize
from bs4 import BeautifulSoup
import urllib2
import cookielib
cook = cookielib.CookieJar()
req = mechanize.Browser()
req.set_cookiejar(cook)
req.open("http://www.cmegroup.com/trading/products/#sortField=oi&sortAsc=false&venues=3&page=1&cleared=1&group=1")
req.select_form(nr=0)
req.form['username'] = 'username'
req.form['password'] = 'password.'
req.submit()
print req.response().read()
EDIT
If you come up against robots.txt issues and you have permission to circumvent this then take a look at this answer for techniques to do this https://stackoverflow.com/questions/13303449/urllib2-httperror-http-error-403-forbidden
回答2:
If you are using BeautifulSoup and requests on Python 3.x, just use this:
from bs4 import BeautifulSoup
import requests
r = requests.get('URL', auth=('USER_NAME', 'PASSWORD'))
soup = BeautifulSoup(r.content)
来源:https://stackoverflow.com/questions/46987241/using-beautifulsoup-where-authentication-is-required