Python模拟登陆京东

一、分析网络请求

1、打开京东登陆网页：https://passport.jd.com/new/login.aspx

2、打开浏览器调试面板 ，接着输入账号密码进行登陆；此时在浏览器调试面板Network捕捉到网络信息

在调试面板下找到登陆的那个post请求：如上图的红色框中：https://passport.jd.com/uc/loginService?uuid=a1a5174c-c0a6-4a99-adfc-f84ef548591d&&r=0.754448520266626&version=2015

查看调试面板的header
请求头：

查询字符串：

表单数据：

当然上面的请求头、查询字符串、表单数据基本上可以在页面上找到：

二、Python代码实现

# coding=utf-8
import requests
from bs4 import BeautifulSoup
import sys
import json
s = requests.Session()

class JD:
    def __init__(self,username,password):
        self.username = username
        self.passward = password
        self.headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36',
            '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')
        # 获取验证码标签
        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('scr2')
            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')