本文将从多个方面详细阐述如何使用Python实现淘宝秒下单功能,包含登录淘宝、搜索商品、加入购物车、提交订单四个阶段。
一、登录淘宝
登录淘宝需要获取登录页面、构造post数据、模拟浏览器行为三个步骤:
import requests from bs4 import BeautifulSoup def get_login_page(): url = 'https://login.taobao.com/member/login.jhtml' headers = { 'Referer': 'https://www.taobao.com/', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3', } response = requests.get(url, headers=headers) return response.content def get_post_data(soup): form = soup.find('form', id='login-form') inputs = form.find_all('input') data = {} for inp in inputs: name = inp.get('name') value = inp.get('value') if name and value: data[name] = value return data def login(username, password): page = get_login_page() soup = BeautifulSoup(page, 'html.parser') post_data = get_post_data(soup) post_data['TPL_username'] = username post_data['TPL_password'] = password post_url = soup.find('form', id='login-form').get('action') headers = { 'Referer': 'https://login.taobao.com/member/login.jhtml', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3', } session = requests.Session() session.post(post_url, data=post_data, headers=headers) return session
使用get_login_page函数获取登录页面,使用get_post_data函数从页面源码中获取post数据,用login函数进行登录。
二、搜索商品
搜索商品需要构造搜索页面、解析搜索结果、获取商品ID三个步骤:
import re def search_goods(session, keyword): s = requests.Session() s.headers.update({'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}) response = s.get(f'https://s.taobao.com/search?q={keyword}') m = re.search(r'g_page_config = ({.*});n', response.text) goods = eval(m.group(1))['mods']['itemlist']['data']['auctions'] return goods[0]['nid']
使用requests.Session构造Session对象,使用正则表达式解析搜索结果页面的HTML源码,获取商品ID。
三、加入购物车
加入购物车需要构造请求URL、发送Cookie、获取CartId三个步骤:
import json def add_cart(session, goods_id): s = requests.Session() s.headers.update({'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}) url = f'https://cart.taobao.com/add_cart_item.htm?buyNow=true&itemId={goods_id}&quantity=1' response = s.get(url, cookies=session.cookies.get_dict()) m = re.search(r'"cartId":"(d+)"', response.text) return m.group(1)
使用requests.Session构造Session对象,构造请求URL后发送Cookie模拟购物车添加行为。获取加入购物车后分配的CartId。
四、提交订单
提交订单需要构造订单页面、获取post数据、发送post请求三个步骤:
def submit_order(session, cart_id): confirm_url = 'https://buy.taobao.com/auction/confirm_order.htm' response = session.get(confirm_url) soup = BeautifulSoup(response.content, 'html.parser') post_url = soup.find('form').get('action') post_data = {} inputs = soup.find_all('input') for i in inputs: name = i.get('name') value = i.get('value') if name: post_data[name] = value post_data.update({'cartIds': cart_id}) headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3', 'Referer': 'https://buy.taobao.com/auction/confirm_order.htm'} response = session.post(post_url, data=post_data, headers=headers) return response.content
使用requests.Session构造Session对象,构造订单页面和post数据后发送post请求,模拟提交订单行为。
总结
本文基于Python,演示了如何实现淘宝秒下单的功能。整个过程包含四个阶段:登录淘宝、搜索商品、加入购物车、提交订单。