说明：python的urllib2获取网页(urlopen)会自动重定向（301,302）。但是，有时候我们需要获取302,301页面的状态信息。就必须获取到转向前的调试信息。

下面代码将可以做到避免302重定向到新的网页

#!/usr/bin/python# -*- coding: utf-8 -*-#encoding=utf-8#Filename:states_code.py import urllib2 class RedirctHandler(urllib2.HTTPRedirectHandler): """docstring for RedirctHandler""" def http_error_301(self, req, fp, code, msg, headers): pass def http_error_302(self, req, fp, code, msg, headers): pass def getUnRedirectUrl(url,timeout=10): req = urllib2.Request(url) debug_handler = urllib2.HTTPHandler(debuglevel = 1) opener = urllib2.build_opener(debug_handler, RedirctHandler) html = None response = None try: response = opener.open(url,timeout=timeout) html = response.read() except urllib2.URLError as e: if hasattr(e, 'code'): error_info = e.code elif hasattr(e, 'reason'): error_info = e.reason finally: if response: response.close() if html: return html else: return error_info html = getUnRedirectUrl('http://jb51.net')print html