用Python访问有密码保护的网站----附代码样例

做这个东西的初衷是希望能够控制家里的TP-Link的Mercury路由器，这个路由器只提供了Web接口；

 

因为家里用的是长城宽带，长城宽带的业务员告诉我，他们115开头的IP是电信提供的IP，访问大多数应用时速度会快很多，比如PPS或一些游戏服务器，我试过一次，确实有效；

但是不是每次启动路由器时，都能够自动获取到115网段开始的IP，大多数时220开头的，刚开始时我是自己到路由器上手工刷，一般刷5到6次可能能刷到115的IP；

 

刷得久了也挺烦的，就想能不能弄个脚本自动完成这个工作，于是就有了下面这些代码；

 

import string import urllib2 import sys import re import base64 from urlparse import urlparse print("--------------------------start----------------------------") theurl = 'http://192.168.1.1/userRpm/StatusRpm.htm' # if you want to run this example you'll need to supply # a protected page with your username and password username = 'admin' password = 'admin' # a very bad password req = urllib2.Request(theurl) try: handle = urllib2.urlopen(req) except IOError, e: # here we *want* to fail pass else: # If we don't fail then the page isn't protected print "This page isn't protected by authentication." sys.exit(1) if not hasattr(e, 'code') or e.code != 401: # we got an error - but not a 401 error print "This page isn't protected by authentication." print 'But we failed for another reason.' sys.exit(1) authline = e.headers['www-authenticate'] # this gets the www-authenticate line from the headers # which has the authentication scheme and realm in it authobj = re.compile( r'''(?:/s*www-authenticate/s*:)?/s*(/w*)/s+realm=['"]([^'"]+)['"]''', re.IGNORECASE) # this regular expression is used to extract scheme and realm matchobj = authobj.match(authline) if not matchobj: # if the authline isn't matched by the regular expression # then something is wrong print 'The authentication header is badly formed.' print authline sys.exit(1) scheme = matchobj.group(1) realm = matchobj.group(2) print(scheme) print(realm) # here we've extracted the scheme # and the realm from the header if scheme.lower() != 'basic': print 'This example only works with BASIC authentication.' sys.exit(1) base64string = base64.encodestring( '%s:%s' % (username, password))[:-1] authheader = "Basic %s" % base64string req.add_header("Authorization", authheader) try: handle = urllib2.urlopen(req, None, 5) except IOError, e: # here we shouldn't fail if the username/password is right print "It looks like the username or password is wrong." sys.exit(1) thepage = handle.read() #Get wanpara line # strList = string.split(thepage, '/n') # wanParaStr = '' # for everyStr in strList: # if ('var wanPara' in everyStr): # nextIndex = strList.index(everyStr) + 1 # wanParaStr = strList[nextIndex] # break # wanParaList = string.split(wanParaStr, ', ') # print(wanParaList[14]) # print(len(wanParaList)) print("--------------------------end----------------------------")