在采集网页信息的时候，经常需要伪造报头来实现采集脚本的有效执行

下面，我们将使用urllib2的header部分伪造报头来实现采集信息

方法1、 #!/usr/bin/python

-- coding: utf-8 --

#encoding=utf-8 #Filename:urllib2-header.py

import urllib2 import sys

#抓取网页内容-发送报头-1 url= "www.jb51.net" send_headers = { 'Host':'www.jb51.net', 'User-Agent':'Mozilla/5.0 (Windows NT 6.2; rv:16.0) Gecko/20100101 Firefox/16.0', 'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8', 'Connection':'keep-alive' }

req = urllib2.Request(url,headers=send_headers) r = urllib2.urlopen(req)

html = r.read() #返回网页内容 receive_header = r.info() #返回的报头信息

sys.getfilesystemencoding()

html = html.decode('utf-8','replace').encode(sys.getfilesystemencoding()) #转码:避免输出出现乱码

print receive_header

print '####################################'

print html

-- coding: utf-8 --

#encoding=utf-8 #Filename:urllib2-header.py

import urllib2 import sys

#抓取网页内容-发送报头-1 url= "www.jb51.net" send_headers = { 'Host':'www.jb51.net', 'User-Agent':'Mozilla/5.0 (Windows NT 6.2; rv:16.0) Gecko/20100101 Firefox/16.0', 'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8', 'Connection':'keep-alive' }

req = urllib2.Request(url,headers=send_headers) r = urllib2.urlopen(req)

html = r.read() #返回网页内容 receive_header = r.info() #返回的报头信息

sys.getfilesystemencoding()

html = html.decode('utf-8','replace').encode(sys.getfilesystemencoding()) #转码:避免输出出现乱码

print receive_header

print '####################################'

print html 方法2、 #!/usr/bin/python

-- coding: utf-8 --

#encoding=utf-8 #Filename:urllib2-header.py

import urllib2 import sys

url = 'www.jb51.net'

req = urllib2.Request(url) req.add_header('Referer','www.jb51.net/') req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.2; rv:16.0) Gecko/20100101 Firefox/16.0') r = urllib2.urlopen(req)

html = r.read() receive_header = r.info()

html = html.decode('utf-8').encode(sys.getfilesystemencoding())

print receive_header print '#####################################' print html

#!/usr/bin/python 在采集网页信息的时候，经常需要伪造报头来实现采集脚本的有效执行

下面，我们将使用urllib2的header部分伪造报头来实现采集信息

方法1、 #!/usr/bin/python

-- coding: utf-8 --

#encoding=utf-8 #Filename:urllib2-header.py

import urllib2 import sys

#抓取网页内容-发送报头-1 url= "www.jb51.net" send_headers = { 'Host':'www.jb51.net', 'User-Agent':'Mozilla/5.0 (Windows NT 6.2; rv:16.0) Gecko/20100101 Firefox/16.0', 'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8', 'Connection':'keep-alive' }

req = urllib2.Request(url,headers=send_headers) r = urllib2.urlopen(req)

html = r.read() #返回网页内容 receive_header = r.info() #返回的报头信息

sys.getfilesystemencoding()

html = html.decode('utf-8','replace').encode(sys.getfilesystemencoding()) #转码:避免输出出现乱码

print receive_header

print '####################################'

print html

-- coding: utf-8 --

#encoding=utf-8 #Filename:urllib2-header.py

import urllib2 import sys

#抓取网页内容-发送报头-1 url= "www.jb51.net" send_headers = { 'Host':'www.jb51.net', 'User-Agent':'Mozilla/5.0 (Windows NT 6.2; rv:16.0) Gecko/20100101 Firefox/16.0', 'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8', 'Connection':'keep-alive' }

req = urllib2.Request(url,headers=send_headers) r = urllib2.urlopen(req)

html = r.read() #返回网页内容 receive_header = r.info() #返回的报头信息

sys.getfilesystemencoding()

html = html.decode('utf-8','replace').encode(sys.getfilesystemencoding()) #转码:避免输出出现乱码

print receive_header

print '####################################'

print html 方法2、 #!/usr/bin/python

-- coding: utf-8 --

#encoding=utf-8 #Filename:urllib2-header.py

import urllib2 import sys

url = 'www.jb51.net'

req = urllib2.Request(url) req.add_header('Referer','www.jb51.net/') req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.2; rv:16.0) Gecko/20100101 Firefox/16.0') r = urllib2.urlopen(req)

html = r.read() receive_header = r.info()

html = html.decode('utf-8').encode(sys.getfilesystemencoding())

print receive_header print '#####################################' print html

#!/usr/bin/python