本文介绍了Python中使用urllib2防止302跳转的方法,python实现避免302跳转,python的urllib2获取网页(urlopen)会自动重定向,有时需要获取302,301页面的状态信息,就必须获取到转向前的调试信息。
python/urllib2/ target=_blank class=infotextkey>python urllib2模块防止302跳转
python的urllib2获取网页(urlopen)会自动重定向(301,302)。
有时需要获取302,301页面的状态信息。就必须获取到转向前的调试信息。
例子,避免302重定向到新的网页。
复制代码 代码示例:
#!/usr/bin/python
# -*- coding: utf-8 -*-
#encoding=utf-8
#Filename:states_code.py
# www.jb200.com
#
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://jb200.com')
print html