coding=UTF-8

import re
import urllib.request, http.cookiejar, urllib.parse#
# print('---------------第一种方法----------------------')
# URL = 'https://baike.baidu.com/item/%E5%B7%B4%E6%B2%99%E5%B0%94%C2%B7%E9%98%BF%E8%90%A8%E5%BE%B7/2867946?fromtitle=%E9%98%BF%E8%90%A8%E5%BE%B7&fromid=9693472'
# response = urllib.request.urlopen(URL)
# if response.getcode() == 200:
#     conf = response.read()
#     print(conf)
# else:
#     print('Fail')
#
# print('---------------第二种方法----------------------')
# # 创建 request 对象
# request = urllib.request.Request(URL)
#
# # 封装 request 对象
# request.add_header('User-Agent', 'Mozilla/5.0')
#
# # 发送带头信息的请求
# response1 = urllib.request.urlopen(request)
# if response1.getcode() == 200:
#     conf = response1.read()
#     print(conf)
# else:
#     print('Fail')print('---------------第三种方法----------------------')
URL2 = 'http://lczl.cnki.net/jbdetail/index?query=1'
URL3 = 'http://r.cnki.net/Klogin/Login.aspx?ReturnUrl=http://lczl.cnki.net/jbdetail/index?query=1'
# 创建cookieJar作为cookie容器
cj = http.cookiejar.CookieJar()# 创建一个opener
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))# 给urllib.request安装opener
urllib.request.install_opener(opener)# 封装 request 对象
request1 = urllib.request.urlopen(URL2)def getVIEWSTATE(data):cer = re.compile('name=\"__VIEWSTATE\" id=\"__VIEWSTATE\" value=\"(.*)\"', flags=0)strlist = cer.findall(data)# print(data)return strlist[0]VIEWSTATE = getVIEWSTATE(request1.read().decode())
# print(VIEWSTATE)
data = {'__VIEWSTATE': VIEWSTATE.encode(), 'userName': '345666561@qq.com', 'passWord': '215501','iplogin': 0}  # 登陆用户名和密码
post_data = urllib.parse.urlencode(data).encode()request2 = urllib.request.Request(URL3, post_data)
request2.add_header('User-Agent', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:55.0) Gecko/20100101 Firefox/55.0')response2 = urllib.request.urlopen(request2)
if response2.getcode() == 200:conf = response2.read()print(conf.decode('utf8'))print(cj)
else:print('Fail')