urllib2.HTTPError:HTTP错误401:未经授权

Question

我的要求是从某个网站下载一个abc.zip文件http://clientdownload.xyz.com/Documents/abc.zip

对于这个活动,我编写了一个python脚本,如下所示:

    url_to_check = 'http://clientdownload.xyz.com/Documents/abc.zip'
    username = "user"
    password = "pwd"
    p = urllib2.HTTPPasswordMgrWithDefaultRealm()
    p.add_password(None, url_to_check, username, password)
    handler = urllib2.HTTPBasicAuthHandler(p)
    opener = urllib2.build_opener(handler)
    urllib2.install_opener(opener)
    zip_file = urllib2.urlopen(url_to_check).read()       
    file_name = 'somefile.zip'
    meta = zip_file.info()
    file_size = int(meta.getheaders("Content-Length")[0])
    print "Downloading: %s Bytes: %s" % (file_name, file_size)

    with open(file_name, 'wb') as dwn_file:
        dwn_file.write(zip_file.read())

我在运行脚本时遇到以下错误:

文件"updateCheck.py",第68行,在check_update zip_file = urllib2.urlopen(url_to_check).read()文件"/usr/lib/python2.7/urllib2.py",第126行,在urlopen中返回_opener.open( url,data,timeout)文件"/usr/lib/python2.7/urllib2.py",第406行,打开响应= meth(req,response)文件"/usr/lib/python2.7/urllib2.py" ,第519行,在http_response'htt',请求,响应,代码,消息,hdrs)文件"/usr/lib/python2.7/urllib2.py",第444行,错误返回self._call_chain(*args)文件"/usr/lib/python2.7/urllib2.py",第378行,在_call_chain中结果= func(*args)文件"/usr/lib/python2.7/urllib2.py",第527行,在http_error_default中引发HTTPError (req.get_full_url(),code,msg,hdrs,fp)urllib2.HTTPError:HTTP错误401:未经授权

我已正确地给出了用户名和密码,但它会引发未经授权的错误.

当我尝试使用带有-http-user and --ask-password选项的wget链接下载它时,我可以下载该文件.

同样使用相同的脚本,我可以正确地从其他服务器下载文件.

我运行此脚本以获取更多信息:

import urllib2, re, time, sys

theurl='http://clientdownload.xxx.com/Documents/Forms/AllItems.aspx'

req = urllib2.Request(theurl)

try:
    handle = urllib2.urlopen(req)

except IOError, e:

    if hasattr(e, 'code'):

        if e.code != 401:
            print 'We got another error'
            print e.code
        else:
            print e.headers
            print e.headers['www-authenticate']

我收到了以下信息:

Content-Type: text/html; charset=utf-8
Server: Microsoft-IIS/7.5
SPRequestGuid: 939bad00-40b7-49b9-bbbc-99d0267a1004
X-SharePointHealthScore: 0
WWW-Authenticate: NTLM
X-Powered-By: ASP.NET
MicrosoftSharePointTeamServices: 14.0.0.6029
Date: Wed, 12 Feb 2014 13:14:19 GMT
Connection: close
Content-Length: 16

NTLM

Answer 1

您可以考虑使用requestsHTTP 来更轻松地进行交互。在您的情况下，通过安装requests-ntlm（ 的插件），您将以更透明的方式requests获得NTLM 身份验证：

import requests
from requests_ntlm import HttpNtlmAuth

r = requests.get("http://ntlm_protected_site.com",auth=HttpNtlmAuth('domain\\username','password'))

r保存响应，包括错误代码和标头（专门针对您的情况r.headers.get('Content-Length')[0]）