python写的一段程序，典型的用户登录，获取请求信息，做相应的导航，获取response。

import httplib

import urlparse

import urllib

import base64

 

class Connection:

def __init__(self, base_url, username, password):

self.base_url = base_url

self.username = username

self.password = password

self.url = urlparse.urlparse(base_url)

 

def request_get(self, resource, args = None):

self.request(resource, "get", args)

 

def request_post(self, resource, args = None):

self.request(resource, "post", args)

 

def request(self, resource, method = "get", args = None):

params = None

path = resource

headers = {}

 

if args:

path += "?" + urllib.urlencode(args)

 

if self.username and self.password:

encoded = base64.encodestring("%s:%s" % (self.username, self.password))[:-1]

headers["Authorization"] = "Basic %s" % encoded

 

if (self.url.port == 443):

conn = httplib.HTTPSConnection(self.url.netloc)

else:

conn = httplib.HTTPConnection(self.url.netloc)

 

req = conn.request(method.upper(), "/" + path, None, headers)

 

r = conn.getresponse()