Python模拟京东登录
分析登录的网络请求
京东登录https://passport.jd.com/new/login.aspx,打开浏览器的调试面板,然后,输入账号密码 =>> 登录,然后看调试面板上面的Network捕捉到的网络请求,如下图:
根据上面的图片,我们可以知道,在我们点击完登录按钮之后,浏览器发送了一个POST请求到https://passport.jd.com/uc/loginService,然后在请求头上面带上了一些基本的参数,最重要的有三个,一个是cookie,一个是Referer,还有一个是User-Agent。不要问我为何重要,我只是知道登录需要带上-_-||
然后,再看看请求所需要的参数,这里面有两部分,一个是Query Params:
uuid:6a9ddda4-1819-4819-a888-b59301f83a59ReturnUrl:https://item.jd.com/5089239.html
r: 0.2520828231526894
version: 2015
另一个是Form Data:
uuid:6a9ddda4-1819-4819-a888-b59301f83a59eid:F37T4YRBOPZZ6JSEGDA7WH2VCIETQY…J23JGCTD3IM4TMK44Y5ATOTO6G4SM
fp:87783198d64a9aa25b3f0b28b152b094
_t:_t
loginType:f
loginname:test@qq.com
nloginpwd:P+TbkVGbhhhC4DFlZ7y4az8j/Y1QYw…h0qs8+bKp7UbHeGWF1KEMrQUG5po=
chkRememberMe:
authcode:
pubKey: MIGfMA0GCSqGSIb3DQEBAQUAA4GNAD…woanQq+CA6agNkqly2H4j6wIDAQAB
sa_token: B68C442BE645754F33277E70120805…8EF504D2CD67D7341B8BFBA47FFA5
上面的参数里面,基本可以在页面上面可以找到:
其中:ReturnUrl是登录成功后返回的页面,authcode是图片验证码,本例子上面不需要输入验证码。
Python实现
根据上面的分析我们只需要通过代码发送一个post请求,并且带上相对应的参数就可以实现登录了。所有的参数,我们都可以轻而易举地获取,唯一的困难是cookie,但是,Python的requests库给我们提供了会话机制,也就是requests.Session(),因此,具体的实现过程可以如代码所示:
全部代码
# -*- coding: UTF-8 -*-import json
import requests
import sys
from bs4 import BeautifulSoup
s = requests.Session()
class JD:
def __init__(self, username, password):
self.username = username
self.password = password
self.headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0",
"Referer": "https://www.jd.com/"
}
def get_login_data(self):
url = "https://passport.jd.com/new/login.aspx"
html = s.get(url, headers=self.headers).content
soup = BeautifulSoup(html, "lxml")
display = soup.select("#o-authcode")[0].get("style")
auth_code = ""
if not display:
print("需要验证码。。。")
auth_code_url = soup.select("#JD_Verification1")[0].get("src2")
auth_code = self.get_auth_img(auth_code_url)
uuid = soup.select("#uuid")[0].get("value")
eid = soup.select("#eid")[0].get("value")
fp = soup.select("input[name="fp"]")[0].get("value") # session id
_t = soup.select("input[name="_t"]")[0].get("value") # token
login_type = soup.select("input[name="loginType"]")[0].get("value")
pub_key = soup.select("input[name="pubKey"]")[0].get("value")
sa_token = soup.select("input[name="sa_token"]")[0].get("value")
data = {
"uuid": uuid,
"eid": eid,
"fp": fp,
"_t": _t,
"loginType": login_type,
"loginname": self.username,
"nloginpwd": self.password,
"chkRememberMe": True,
"authcode": "",
"pubKey": pub_key,
"sa_token": sa_token,
"authCode": auth_code
}
return data
def get_auth_img(self, url):
auth_code_url = "http:" + url
auth_img = s.get(auth_code_url, headers=self.headers)
with open(sys.path[0] + "/auth.jpg", "wb") as f:
f.write(auth_img.content)
code = input("请输入验证码:")
return code
def login(self):
"""
登录
:return:
"""
url = "https://passport.jd.com/uc/loginService"
data = self.get_login_data()
headers = {
"Referer": "https://passport.jd.com/uc/login?ltype=logout",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0",
"X-Requested-With": "XMLHttpRequest"
}
content = s.post(url, data=data, headers=headers).text
result = json.loads(content[1: -1])
return result
def rush(self):
print("功能正在赶来的路上,敬请期待。。。")
pass
def handle():
print("*************** 菜单列表 **************")
print("1、抢购")
print("2、加入购物车")
num = input("请输入功能编号:")
if num == "1":
print("抢购功能正在赶来的路上,敬请期待。。。")
else:
print("加入购物车功能正在赶来的路上,敬请期待。。。")
# print("加入购物车成功!!!")
pass
username = input("请输入京东账号:")
password = input("请输入京东密码:")
jd = JD(username, password)
result = jd.login()
if result.get("success"):
print("登录成功")
handle()
else:
print("登录失败")
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