618!python京东 PC 版抢券程序

前言

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作者:python技术

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618!京东 PC 版抢卷

618不到一个月了,京东 618 活动已经开始了,不知道小伙伴们参与了没。先抢一下京东的优惠劵,也许 618 出现神劵呢?

抓包分析登录

获取二维码图片

这里我们使用二维码登录,通过浏览器的控制台可以看出有个带 show 的 url 地址可以得到二维码登录图片
618!python京东 PC 版抢券程序_第1张图片
首先导入所有需要的包和一个解析 json 的方法

import requests
import random
import time
import os
import json

from PIL import Image

def parse_json(str):
    return json.loads(str[str.find('{'):str.rfind('}') + 1])

显示京东登录二维码图片

user_agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36'

session = requests.session()

def show_QRcode():
    url = 'https://qr.m.jd.com/show'
    params = {
     
        'appid': 133,
        'size': 147,
        't': str(int(time.time() * 1000)),
    }
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://passport.jd.com/new/login.aspx',
    }
    resp = session.get(url=url, headers=headers, params=params)

    QRcode_path = 'QRcode.png'
    with open(QRcode_path, 'wb') as f:
        for chunk in resp.iter_content(chunk_size=1024):
            f.write(chunk)

    QRcode = Image.open(QRcode_path)
    QRcode.show()

检测二维码是否扫码

获取二维码图片之后,在 Fiddler 抓包神器中一直刷新带 check 的 url 地址,猜测这个也是和登录有关的,应该是检测二维码是否被扫码。
618!python京东 PC 版抢券程序_第2张图片
检测是否被扫码抓包

def check_QRcode():
    
    url = 'https://qr.m.jd.com/check'
    params = {
     
        'appid': '133',
        'callback': 'jQuery{}'.format(random.randint(1000000, 9999999)),
        'token': session.cookies.get('wlfstk_smdl'),
        '_': str(int(time.time() * 1000)),
    }
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://passport.jd.com/new/login.aspx?ReturnUrl=https%3A%2F%2Fwww.jd.com%2F',
    }
    resp = session.get(url=url, headers=headers, params=params)
    resp_json = parse_json(resp.text)

    if 'ticket' in resp_json:
        print(resp_json)
        return resp_json['ticket']
    else:
        print(resp_json['msg'])
        print('请刷新京东登录二维码!')
        os._exit(0)

示例结果

{
     'code': 200, 'ticket': 'AAEAIPL-bkU4RNrUw7YaLqYZhjWKqvP23PtkY1XTD2Cv2a52'}

验证二维码

在检测二维码是否被扫码之后,在 Fiddler 抓包神器中出现有一个带 qrCodeTicketValidation 的 url 地址,需要传递一个 t 参数,这个参数正好是 https://qr.m.jd.com/check 的返回值
618!python京东 PC 版抢券程序_第3张图片
验证二维码抓包

def validation_QRcode(ticket):
    url = 'https://passport.jd.com/uc/qrCodeTicketValidation'
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://passport.jd.com/new/login.aspx?ReturnUrl=https%3A%2F%2Fwww.jd.com%2F',
    }
    params={
     
        't': ticket
    }
    resp = session.get(url=url, headers=headers, params=params)
    print(resp.text)

示例结果

{
     "returnCode":0,"url":"https://www.jd.com/"}

到这里京东二维码已经登录成功了

领取优惠券


可以看到这个 url 的参数有 page,pageSize,不用猜都知道这是刷新的优惠券列表,抓它

def coupon_list():
    url = 'https://a.jd.com/indexAjax/getCouponListByCatalogId.html'
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://a.jd.com/?cateId=118',
    }
    couponList = []
    for i in range(1, 20):
        params = {
     
            'callback': 'jQuery{}'.format(random.randint(1000000, 9999999)),
            'catalogId': '118',
            'page': str(i),
            'pageSize': '9',
            '_': str(int(time.time() * 1000)),
        }
        try:
            resp = session.get(url=url, params=params, headers=headers)
            json = parse_json(resp.text)
            couponList.extend(json['couponList'])
            if json['totalNum'] == 1:
                continue
            else:
                break
        except Exception:
            print('出错了!')
    return couponList

示例结果就不写了,返回的 json 串太长了

最后一步领取优惠劵,在浏览器控制台中 url 地址上有一个 key,这个 key 存在与优惠劵列表的返回值中

最后一步,领取优惠券

def get_coupon(coupon_list):
    url = 'https://a.jd.com/indexAjax/getCoupon.html'
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://a.jd.com/?cateId=118',
    }
    for coupon in coupon_list:
        params = {
     
            'callback': 'jQuery{}'.format(random.randint(1000000, 9999999)),
            'key': coupon['key'],
            'type': '1',
            '_': str(int(time.time() * 1000)),
        }
        time.sleep(1)
        resp = session.get(url=url, params=params, headers=headers)
        print(resp.text)

示例结果

jQuery1912666({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery3381540({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery6247320({
     "code":"16","success":false,"message":"本时段优惠券已抢完,请14:00再来吧!"})
jQuery5888701({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery5048959({
     "code":"14","success":false,"message":"您已经参加过此活动,别太贪心哟,下次再来~"})
jQuery8608381({
     "code":"14","success":false,"message":"您已经参加过此活动,别太贪心哟,下次再来~"})
jQuery2539212({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery6439595({
     "code":"999","success":true,"message":"领券成功"})
jQuery2972325({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery1697862({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery1905738({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery7639432({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery8239706({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})
jQuery1221489({
     "code":"15","success":false,"message":"您今天已经参加过此活动,别太贪心哟,明天再来~"})

完整代码

import requests
import random
import time
import os
import json

from PIL import Image

user_agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36'

session = requests.session()


def show_QRcode():
    url = 'https://qr.m.jd.com/show'
    params = {
     
        'appid': 133,
        'size': 147,
        't': str(int(time.time() * 1000)),
    }
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://passport.jd.com/new/login.aspx',
    }
    resp = session.get(url=url, headers=headers, params=params)

    QRcode_path = 'QRcode.png'
    with open(QRcode_path, 'wb') as f:
        for chunk in resp.iter_content(chunk_size=1024):
            f.write(chunk)

    QRcode = Image.open(QRcode_path)
    QRcode.show()

def check_QRcode():
    
    url = 'https://qr.m.jd.com/check'
    params = {
     
        'appid': '133',
        'callback': 'jQuery{}'.format(random.randint(1000000, 9999999)),
        'token': session.cookies.get('wlfstk_smdl'),
        '_': str(int(time.time() * 1000)),
    }
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://passport.jd.com/new/login.aspx?ReturnUrl=https%3A%2F%2Fwww.jd.com%2F',
    }
    resp = session.get(url=url, headers=headers, params=params)
    resp_json = parse_json(resp.text)

    if 'ticket' in resp_json:
        print(resp_json)
        return resp_json['ticket']
    else:
        print(resp_json['msg'])
        print('请刷新JD登录二维码!')
        os._exit(0)


def validation_QRcode(ticket):

    url = 'https://passport.jd.com/uc/qrCodeTicketValidation'
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://passport.jd.com/new/login.aspx?ReturnUrl=https%3A%2F%2Fwww.jd.com%2F',
    }
    params={
     
        't': ticket
    }
    resp = session.get(url=url, headers=headers, params=params)
    print(resp.text)


def parse_json(str):
    return json.loads(str[str.find('{'):str.rfind('}') + 1])


def coupon_list():
    url = 'https://a.jd.com/indexAjax/getCouponListByCatalogId.html'
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://a.jd.com/?cateId=118',
    }
    couponList = []
    for i in range(1, 20):
        params = {
     
            'callback': 'jQuery{}'.format(random.randint(1000000, 9999999)),
            'catalogId': '118',
            'page': str(i),
            'pageSize': '9',
            '_': str(int(time.time() * 1000)),
        }
        try:
            resp = session.get(url=url, params=params, headers=headers)
            json = parse_json(resp.text)
            couponList.extend(json['couponList'])
            if json['totalNum'] == 1:
                continue
            else:
                break
        except Exception:
            print('出错了!')
    return couponList


def get_coupon(coupon_list):
    url = 'https://a.jd.com/indexAjax/getCoupon.html'
    headers = {
     
        'User-Agent': user_agent,
        'Referer': 'https://a.jd.com/?cateId=118',
    }
    for coupon in coupon_list:
        params = {
     
            'callback': 'jQuery{}'.format(random.randint(1000000, 9999999)),
            'key': coupon['key'],
            'type': '1',
            '_': str(int(time.time() * 1000)),
        }
        time.sleep(1)
        resp = session.get(url=url, params=params, headers=headers)
        print(resp.text)



if __name__ == '__main__':
    show_QRcode()

    time.sleep(10)

    ticket = check_QRcode()
    validation_QRcode(ticket)
    coupon_list = coupon_list()
    get_coupon(coupon_list)

总结

京东PC版抓取优惠券到这里就结束了,代码还有不完善的地方,比如每次都要扫码登录,没有保存 cookies 自动登录京东等待。小伙伴们可以根据自身需求更改代码,造出适合自己的轮子。

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