Python中使用urllib2防止302跳转的代码例子
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 importurllib2 classRedirctHandler(urllib2.HTTPRedirectHandler): """docstringforRedirctHandler""" defhttp_error_301(self,req,fp,code,msg,headers): pass defhttp_error_302(self,req,fp,code,msg,headers): pass defgetUnRedirectUrl(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() excepturllib2.URLErrorase: ifhasattr(e,'code'): error_info=e.code elifhasattr(e,'reason'): error_info=e.reason finally: ifresponse: response.close() ifhtml: returnhtml else: returnerror_info html=getUnRedirectUrl('http://jb51.net') printhtml