#!/usr/bin/env python
# -*- coding: utf-8 -*-

import cookielib
import urllib2

url = "http://www.baidu.com"
response1 = urllib2.urlopen(url)
print "第一种方法"
# 获取状态码，200表示成功
print response1.getcode()
# 获取网页内容的长度
print len(response1.read())

print "第二种方法"
request = urllib2.Request(url)
# 模拟Mozilla浏览器进行爬虫
request.add_header("user-agent", "Mozilla/5.0")
response2 = urllib2.urlopen(request)
print response2.getcode()
print len(response2.read())

print "第三种方法"
cookie = cookielib.CookieJar()
# 加入urllib2处理cookie的能力
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie))
urllib2.install_opener(opener)
response3 = urllib2.urlopen(url)
print response3.getcode()
print len(response3.read())
print cookie