Python requests HTTP验证登录实现流程

1、场景

1）用户输入完网址后，浏览器直接弹出需要输入用户名/密码

PS：此时输入用户名密码即可登录，或者直接带着用户名密码访问网站。

假设url为http://xxx.yyy.zzz

用户名为admin

密码为123456

则访问的网址应该为http://admin:123456@xxx.yyy.zzz【http://username:password@url】

直接访问改网址即可

2）利用requests.get(url)返回状态码为401

# -*- encoding=utf-8 -*-
import requests
if __name__ == \'__main__\':
  url = \'http://xxxxx.yyyyyy\'
  response = requests.get(url=url)
  status_code = response.status_code
  print status_code
  text = response.text
  print text

运行

401
<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\">
<head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\"/>
<title>401 - Unauthorized: Access is denied due to invalid credentials.</title>
<style type=\"text/css\">
<!--
body{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;}
fieldset{padding:0 15px 10px 15px;} 
h1{font-size:2.4em;margin:0;color:#FFF;}
h2{font-size:1.7em;margin:0;color:#CC0000;} 
h3{font-size:1.2em;margin:10px 0 0 0;color:#000000;} 
#header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:\"trebuchet MS\", Verdana, sans-serif;color:#FFF;
background-color:#555555;}
#content{margin:0 0 0 2%;position:relative;}
.content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;}
-->
</style>
</head>
<body>
<div id=\"header\"><h1>Server Error</h1></div>
<div id=\"content\">
 <div class=\"content-container\"><fieldset>
 <h2>401 - Unauthorized: Access is denied due to invalid credentials.</h2>
 <h3>You do not have permission to view this directory or page using the credentials that you supplied.</h3>
 </fieldset></div>
</div>
</body>
</html>

2、HTTP基础验证

这是一种简单的身份认证，它是通过http的authorization请求头中，携带经过base64加密的用户名和密码而实现的一种认证

# -*- encoding=utf-8 -*-
import requests
from requests.auth import HTTPBasicAuth
if __name__ == \'__main__\':
  url = \'http://xxx.yyy.zzz\'
  user = \'admin\'
  password = \'123456\'
  response = requests.get(url=url, auth=HTTPBasicAuth(user, password))
  # 或者
  # response = requests.get(url=url, auth=(user, password))
  print response.status_code

3、摘要式身份认证

# -*- encoding=utf-8 -*-
import requests
from requests.auth import HTTPDigestAuth

if __name__ == \'__main__\':
  url = \'http://xxx.yyy.zzz\'
  user = \'admin\'
  password = \'123456\'
  response = requests.get(url, auth=HTTPDigestAuth(user, password))
  print response.status_code

如果2和3都不行，还是返回401，此时可以试试第4种

使用2和3依旧返回401,此时可以print出response.headers看一下

# -*- encoding=utf-8 -*-

import requests
from requests.auth import HTTPDigestAuth

if __name__ == \'__main__\':
  url = \'http://xxx.yyy.zzz\'
  user = \'admin\'
  password = \'123456\'
  response = requests.get(url, auth=HTTPDigestAuth(user, password))
  print response.status_code
  print response.headers

运行

401
{\’Content-Length\’: \’1293\’, \’X-Powered-By\’: \’ASP.NET\’, \’Server\’: \’Microsoft-IIS/7.5\’, \’Date\’: \’Fri, 05 Jun 2020 05:36:23 GMT\’, \’Content-Type\’: \’text/html\’, \’WWW-Authenticate\’: \’Negotiate, NTLM\’}

打印后可看到headers中带有字样\’WWW-Authenticate\’: \’Negotiate, NTLM\’，表示需要ntlm验证，此时尝试使用第4种[/code]

4、ntlm验证

# -*- encoding=utf-8 -*-
import requests
from requests_ntlm import HttpNtlmAuth
if __name__ == \'__main__\':
  url = \'http://xxx.yyy.zzz\'
  user = \'admin\'
  password = \'123456\'
  response = requests.get(url, auth=HttpNtlmAuth(user, password))
  print response.status_code
  print response.headers

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持自学编程网。