模拟用户登录保存cookie，利用cookie访问

curl 'http://*******/login/' -c '/tmp/300' #生成cookie文件
curl -d 'a=b&c=d' 'http://******/ajax/know/' -b '/tmp/300' #利用cookie访问

#! -*- coding:utf-8 -*-
'''
模拟登录
curl 'http://*******/login/' -c '/tmp/300' #生成cookie文件
curl -d 'a=b&c=d' 'http://******/ajax/know/' -b '/tmp/300' #利用cookie访问
'''
import pycurl
import StringIO
import json
import sys
def initCurl():
c = pycurl.Curl()
c.setopt(pycurl.COOKIEFILE, "cookie_file_name")#把cookie保存在该文件中
c.setopt(pycurl.COOKIEJAR, "cookie_file_name")
c.setopt(pycurl.FOLLOWLOCATION, 1) #允许跟踪来源
c.setopt(pycurl.MAXREDIRS, 5)
return c

def GetDate(curl, url):
head = ['Accept:*/*',
'User-Agent:Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11']
buf = StringIO.StringIO()
curl.setopt(pycurl.WRITEFUNCTION, buf.write)
curl.setopt(pycurl.URL, url)
curl.setopt(pycurl.HTTPHEADER,  head)
curl.perform()
the_page =buf.getvalue()
buf.close()
return the_page
def PostData(curl, url, data):
head = ['Accept:*/*',
'User-Agent:Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11']
buf = StringIO.StringIO()
curl.setopt(pycurl.WRITEFUNCTION, buf.write)
curl.setopt(pycurl.POSTFIELDS,  data)
curl.setopt(pycurl.URL, url)
curl.setopt(pycurl.HTTPHEADER,  head)
curl.perform()
the_page = buf.getvalue()
buf.close()
return the_page
GetDate(initCurl(),'http://********/login')
p=PostData(initCurl(), 'http://********/post', 'a=b&c=d')
print p