使用Python Requests实现Supreme商品加购失败求助

尝试用Python的Requests库实现Supreme网站商品加购功能，发送加购请求后无报错，但返回响应显示加购失败。相关代码及返回结果如下：

代码示例 #

#imports
import requests
from bs4 import BeautifulSoup

#constants
baseurl = "https://www.supremenewyork.com/"
product_category = ""
size = ["Medium"]
product_keywords = ["Supreme®/The North Face® Steep Tech Fleece Pant"]
product_style = ["Brown"]


#functions

def carting(url):
    session = requests.Session()
    r = session.get(baseurl+url)
    soup = BeautifulSoup(r.text, "html.parser")
    name = soup.find("h1", {"itemprop" : "name"}).text
    style = soup.find("p", {"itemprop" : "model"}).text
    for keyword in product_keywords:
        if keyword in name:
            for keyword in product_style:
                if keyword in style:
                    print("Product Found! Adding to cart...")
                    form = soup.find("form", {"id" : "cart-add"})
                    payload = {
                        "utf8" : "✓",
                        "authenticity_token" : form.find("input", {"name" : "authenticity_token"})["value"],
                        "style" : form.find("input", {"name" : "style"})["value"],
                        "size" :  "92001",           #form.find("select", {"id" : "size"})["value"]  Need to rework getting Size through Keyword
                        "qty" : "1"
                    }
                    headers = {
                        "user-agent" : "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36",
                        "origin" : "https://www.supremenewyork.com",
                        "referer" : baseurl + url,
                        "path" : form["action"],
                        'Host': 'www.supremenewyork.com',                                                                                                                     
                        'Accept': 'application/json',                                                                                                                             
                        'Proxy-Connection': 'keep-alive',                                                                                                                                   
                        'X-Requested-With': 'XMLHttpRequest',                                                                                                                               
                        'Accept-Encoding': 'gzip, deflate',                                                                                                                                
                        'Accept-Language': 'en-us',                                                                                                                                        
                        'Content-Type': 'application/x-www-form-urlencoded',                                                                                                            
                        'Origin': 'http://www.supremenewyork.com',                                                                                                                
                        'Connection': 'keep-alive',
                    }
                    response = session.post(baseurl+form["action"], data=payload)
                    
                    print(response.text)
                    
                    return(session)

carting("/shop/pants/mj1czv0pa/jcyp91a8w")

返回结果 #

Product Found! Adding to cart...
{"cart":[],"success":false}

怀疑是请求头设置不符合网站要求，不确定需包含哪些必要请求头，请求解决该问题。

针对Supreme加购失败的问题，从请求头、会话状态、参数准确性三个方向排查修复：

1. 修复请求头的冲突与冗余问题 #

你的请求头存在两处关键错误：

• 重复设置了Origin字段（同时有http和https版本），Supreme站点为HTTPS，需统一为https://www.supremenewyork.com
• 多余的path字段不属于请求头范畴，需要移除
• 精简后的核心请求头如下：

headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36",
    "Origin": "https://www.supremenewyork.com",
    "Referer": baseurl + url,
    "Host": "www.supremenewyork.com",
    "Accept": "application/json",
    "X-Requested-With": "XMLHttpRequest",
    "Accept-Language": "en-US,en;q=0.9",
    "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
    "Connection": "keep-alive"
}

2. 确保会话状态一致性 #

Supreme依赖Cookie跟踪会话，你已使用requests.Session()，但需确认：

• GET商品页面时保存的Cookie被自动带到POST请求中（Session会自动处理，可打印session.cookies确认包含_supreme_session等关键字段）

3. 验证Size参数的准确性 #

硬编码的size: "92001"可能不匹配当前商品的真实尺码ID，建议动态解析页面获取：

# 替换硬编码的size值
size_select = soup.find("select", {"id": "size"})
target_size_id = None
for option in size_select.find_all("option"):
    if size[0] in option.text:
        target_size_id = option["value"]
        break
# 在payload中使用获取到的target_size_id
payload = {
    "utf8" : "✓",
    "authenticity_token" : form.find("input", {"name" : "authenticity_token"})["value"],
    "style" : form.find("input", {"name" : "style"})["value"],
    "size" : target_size_id,
    "qty" : "1"
}

4. 额外注意事项 #

• Supreme有反爬机制，频繁请求可能被拦截，建议添加1-2秒的随机延迟
• 确认authenticity_token是从当前页面form中获取的最新值，避免使用过期token
• 检查POST请求URL是否正确：打印baseurl+form["action"]，确认格式为https://www.supremenewyork.com/shop/<product-id>/add

内容的提问来源于stack exchange，提问作者Chick3nwing