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')