Python3中关于cookie的创建与保存

from http.cookiejar import CookieJar,LWPCookieJar
from urllib.request import Request,urlopen,HTTPCookieProcessor,build_opener
from urllib.parse import urlencode
import ssl
# ----------------------------------------获取cookie---------------------------
# 生成一个管理cookie的对象
cookie_obj = CookieJar()
# 创建一个支持cookie的对象，对象属于HTTPCookieProcessor
cookie_handler = HTTPCookieProcessor(cookie_obj)  
#创建一个opener
opener = build_opener(cookie_handler)  
response = opener.open('http://www.baidu.com')
print(response)
#打印cookie
for cookie in cookie_obj:
  print('key:',cookie.name)
  print('value:',cookie.value)

from http.cookiejar import CookieJar,LWPCookieJar
from urllib.request import Request,urlopen,HTTPCookieProcessor,build_opener
filename = 'neihan.txt'
# 设置cookie保存的文件
cookie_obj = LWPCookieJar(filename=filename)
# 创建一个支持cookie的对象，对象属于HTTPCookieProcessor
cookie_handler = HTTPCookieProcessor(cookie_obj)
#创建一个opener
opener = build_opener(cookie_handler)
#请求网页
response = opener.open('http://www.neihanshequ.com')
# 保存cookie到指定的文件当中去
# ignore_expires=True 即便目标cookie已经在文件中存在，仍然对其写入
# ignore_discard=True  即便cookie将要/已经过期，仍然写入
cookie_obj.save(ignore_expires=True,ignore_discard=True)

from http.cookiejar import CookieJar,LWPCookieJar
from urllib.request import Request,urlopen,HTTPCookieProcessor,build_opener
cookie = LWPCookieJar()
#从文件中读取cookie到变量
cookie.load('neihan.txt')
request = Request('http://www.neihanshequ.com')
# 创建一个支持cookie的对象，对象属于HTTPCookieProcessor
cookie_handler = HTTPCookieProcessor(cookie)
#创建一个opener
opener = build_opener(cookie_handler)
#请求网页
response = opener.open(request)
# print(response.read().decode())

from http.cookiejar import CookieJar,LWPCookieJar
from urllib.request import Request,urlopen,HTTPCookieProcessor,build_opener
from urllib.parse import urlencode
import ssl
cookie = LWPCookieJar(filename='meishi.txt')
cookie_handler = HTTPCookieProcessor(cookie)
opener = build_opener(cookie_handler)
headers={
  'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0'
}
post_url = 'https://i.meishi.cc/login.php?redirect=https%3A%2F%2Fi.meishi.cc%2Flogin.php%3Fac%3Dzhuce'
# urlencode对url当中的参数进行编码
# urlencode()编码的对象为字典类型
post_data = urlencode({
  'username':'***********',  #自己的登陆账号
  'password':'************'  #自己的登陆密码
})
# 请求url 并传参，设置编码方式
request = Request(post_url,bytes(post_data,encoding='utf-8'))
# 解决证书问题
ssl._create_default_https_context = ssl._create_unverified_context
response = opener.open(request)
print(response.read().decode())
cookie.save(ignore_discard=True,ignore_expires=True)