Python Requests使用Cookie的几种方式详解

import requests

get_url = "https://postman-echo.com/get"
# key为Cookie，值为使用;拼接的 cookie_name=cookie_value 字符串
headers = {"Cookie":"cka=111a;ckb=111b"}

res = requests.get(url=get_url,headers=headers)

print(res.json().get("headers").get("cookie"))
print(res.request.headers.get("Cookie"))

import requests

get_url = "https://postman-echo.com/get"
# cookies 以字典形式提供，cookies 值以字典形式提供，key为cookie_name，value为cookie_value
cookies = {"cka":"222a","ckb":"222b"}

res = requests.get(url=get_url,cookies=cookies)

print(res.json().get("headers").get("cookie"))
print(res.request.headers.get("Cookie"))

import requests

session = requests.session()
print("会话初始cookie：",dict(session.cookies))

get_url = "https://postman-echo.com/get"
res = session.get(url=get_url)

print("响应头中set-cookie：",res.headers.get("set-cookie"))
print("会话现有cookie：",dict(session.cookies))

import requests

session = requests.session()
print("会话初始cookie：",dict(session.cookies))

# 直接通过key设置cookie，但不支持设置cookie的 path、domain 等值
session.cookies["cka"]="111a"
session.cookies["ckb"]="111b"

get_url = "https://postman-echo.com/get"
res = session.get(url=get_url)

print("本次请求使用的cookie：",res.request.headers.get("Cookie"))
print("会话现有cookie：",dict(session.cookies))

import requests

session = requests.session()
print("会话初始cookie：",dict(session.cookies))

# 通过set方法设置cookie，且支持设置path、domain等值
session.cookies.set("ck2","222",path="/",domain="postman-echo.com")

get_url = "https://postman-echo.com/get"
res = session.get(url=get_url)

print("本次请求使用的cookie：",res.request.headers.get("Cookie"))
print("会话现有cookie：",session.cookies)

import requests

session = requests.session()
print("会话初始cookie：",dict(session.cookies))

# 通过 requests.utils 工具包里的 add_dict_to_cookiejar 方法设置cookie，但不支持设置 path、domain 等值
cookie_dict = {"ck3a":"333a","ck3b":"333b"}
requests.utils.add_dict_to_cookiejar(session.cookies,cookie_dict=cookie_dict)

get_url = "https://postman-echo.com/get"
res = session.get(url=get_url)

print("本次请求使用的cookie：",res.request.headers.get("Cookie"))
print("会话现有cookie：",dict(session.cookies))

import requests

session = requests.session()
print("会话初始cookie：",dict(session.cookies))

# 创建一个空 RequestsCookieJar()对象，然后使用对象的set方法赋值，然后update更新到当前会话cookie，支持设置 path、domain等值
ckj = requests.sessions.RequestsCookieJar()
ckj.set('ck4a', '444a', path='/', domain='postman-echo.com')
session.cookies.update(ckj)

get_url = "https://postman-echo.com/get"
res = session.get(url=get_url)

print("本次请求使用的cookie：",res.request.headers.get("Cookie"))
print("会话现有cookie：",dict(session.cookies))

import requests

session = requests.session()
print("会话初始cookie：",dict(session.cookies))

# 通过 requests.utils 工具包里的 cookiejar_from_dict 方法将字典格式的cookie转换为cookiejar对象，然后update更新到当前会话，不支持设置 path、domain 等值
cookie_dict = {"ck5a":"555a","ck5b":"555b"}
ckj5 = requests.utils.cookiejar_from_dict(cookie_dict=cookie_dict)
session.cookies.update(ckj5)

get_url = "https://postman-echo.com/get"
res = session.get(url=get_url)

print("本次请求使用的cookie：",res.request.headers.get("Cookie"))
print("会话现有cookie：",dict(session.cookies))