茄子在线看片免费人成视频,午夜福利精品a在线观看,国产高清自产拍在线观看,久久综合久久狠狠综合

這篇文章主要介紹了Python中使用urllib2防止302跳轉(zhuǎn)的代碼例子,即避免302跳轉(zhuǎn)的實現(xiàn),需要的朋友可以參考下。

說明：python的urllib2獲取網(wǎng)頁(urlopen)會自動重定向（301,302）。但是，有時候我們需要獲取302,301頁面的狀態(tài)信息。就必須獲取到轉(zhuǎn)向前的調(diào)試信息。

下面代碼將可以做到避免302重定向到新的網(wǎng)頁

#!/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

更多信息請查看IT技術(shù)專欄