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ecommerce-search

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在京东/淘宝/天猫/抖音商城搜索商品,获取 top-k 结果(名称、价格、链接、销量)

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Source SKILL.md: https://github.com/rsclaw-ai/rsclaw/blob/HEAD/skills/ecommerce-search/SKILL.md

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电商搜索

你是一个电商比价助手。当用户要求搜索商品、比价、找最低价时,按以下流程操作。

核心流程

  1. 判断平台 — 用户指定了就用指定的,否则默认搜京东(不需要登录)
  2. 检查登录态 — 淘宝/天猫/抖音需要登录,先检查 state
  3. 搜索并提取结果 — 导航到搜索页,用 JS 提取商品列表
  4. 格式化返回 — 表格形式展示 top-k 结果

平台操作指南

京东(jd.com)— 无需登录

搜索步骤:

  1. open 导航到 https://search.jd.com/Search?keyword={query}&enc=utf-8
  2. wait 3000ms(等待商品列表渲染)
  3. evaluate 执行提取脚本(见下方)

提取脚本:

(function(){
  var items = [];
  document.querySelectorAll('#J_goodsList .gl-item, .gl-warp .gl-item, [data-sku]').forEach(function(el, i){
    if(i >= 20) return;
    var name = (el.querySelector('.p-name a em, .p-name a') || {}).textContent || '';
    var price = (el.querySelector('.p-price strong i, .p-price .J_price') || {}).textContent || '';
    var link = (el.querySelector('.p-name a') || {}).href || '';
    var shop = (el.querySelector('.p-shop a, .p-shopnum a') || {}).textContent || '';
    var commit = (el.querySelector('.p-commit a') || {}).textContent || '';
    if(name.trim()) items.push({name: name.trim().substring(0, 80), price: price.trim(), link: link, shop: shop.trim(), sales: commit.trim()});
  });
  return JSON.stringify(items);
})()

如果上述选择器失败(京东改版):

  1. snapshot 获取页面结构
  2. 查找包含商品信息的列表容器
  3. 自适应编写提取 JS

淘宝(taobao.com)— 需要登录

登录检查:

  1. {"tool": "web_browser", "action": "state", "value": "load", "path": "taobao.com-auth.json"}
  2. open 导航到 https://s.taobao.com/search?q=test
  3. 如果 URL 被重定向到 login.taobao.com → 触发 web-scan-login skill 登录
  4. 如果页面正常显示搜索结果 → 登录态有效

搜索步骤:

  1. open 导航到 https://s.taobao.com/search?q={query}&s=0
  2. wait 3000ms
  3. 处理可能的验证滑块(如果出现 nc-container 或 baxia-dialog)
  4. evaluate 执行提取脚本

提取脚本:

(function(){
  var items = [];
  // 新版淘宝
  document.querySelectorAll('[class*="Card--"] a[href*="item.taobao"], [class*="Card--"] a[href*="detail.tmall"], .Content--content a[href*="item"]').forEach(function(el, i){
    if(i >= 20) return;
    var card = el.closest('[class*="Card--"]') || el.parentElement;
    var name = (card.querySelector('[class*="Title--"], [class*="title"]') || {}).textContent || '';
    var price = (card.querySelector('[class*="Price--"], [class*="price"]') || {}).textContent || '';
    var shop = (card.querySelector('[class*="Shop--"], [class*="shop"]') || {}).textContent || '';
    var sales = (card.querySelector('[class*="Sale--"], [class*="sale"], [class*="realSales"]') || {}).textContent || '';
    var link = el.href || '';
    if(name.trim()) items.push({name: name.trim().substring(0, 80), price: price.trim(), link: link.split('&')[0], shop: shop.trim(), sales: sales.trim()});
  });
  // 旧版兜底
  if(items.length === 0) {
    document.querySelectorAll('.items .item, .m-itemlist .items .item').forEach(function(el, i){
      if(i >= 20) return;
      var name = (el.querySelector('.title a, .J_ClickStat') || {}).textContent || '';
      var price = (el.querySelector('.price strong, .g_price strong') || {}).textContent || '';
      var link = (el.querySelector('.title a, .J_ClickStat') || {}).href || '';
      var shop = (el.querySelector('.shop a') || {}).textContent || '';
      var sales = (el.querySelector('.deal-cnt') || {}).textContent || '';
      if(name.trim()) items.push({name: name.trim().substring(0, 80), price: price, link: link, shop: shop.trim(), sales: sales.trim()});
    });
  }
  return JSON.stringify(items);
})()

天猫(tmall.com)— 需要登录(共享淘宝登录态)

搜索步骤:

  1. 确认淘宝登录态(天猫和淘宝共享登录)
  2. open 导航到 https://list.tmall.com/search_product.htm?q={query}
  3. wait 3000ms
  4. evaluate 执行提取脚本

提取脚本:

(function(){
  var items = [];
  document.querySelectorAll('.product, [class*="Product"], [data-id]').forEach(function(el, i){
    if(i >= 20) return;
    var name = (el.querySelector('.productTitle a, [class*="Title"] a, .product-title') || {}).textContent || '';
    var price = (el.querySelector('.productPrice em, [class*="Price"] em, .product-price') || {}).textContent || '';
    var link = (el.querySelector('.productTitle a, [class*="Title"] a') || {}).href || '';
    var shop = (el.querySelector('.productShop a, [class*="Shop"]') || {}).textContent || '';
    var sales = (el.querySelector('.productStatus span, [class*="Sale"]') || {}).textContent || '';
    if(name.trim()) items.push({name: name.trim().substring(0, 80), price: price.trim(), link: link, shop: shop.trim(), sales: sales.trim()});
  });
  return JSON.stringify(items);
})()

抖音商城(douyin.com/mall)— 需要登录

登录检查:

  1. {"tool": "web_browser", "action": "state", "value": "load", "path": "douyin.com-auth.json"}
  2. open 导航到 https://www.douyin.com
  3. 如果页面出现登录弹窗或未登录状态 → 触发 web-scan-login skill
  4. 登录后 {"tool": "web_browser", "action": "state", "value": "save", "path": "douyin.com-auth.json"}

搜索步骤:

  1. open 导航到 https://www.douyin.com/search/{query}?type=general
  2. wait 3000ms
  3. 点击"商品" tab(如果有):click 包含"商品"文字的 tab
  4. wait 2000ms
  5. evaluate 执行提取脚本

提取脚本:

(function(){
  var items = [];
  document.querySelectorAll('[class*="goods"], [class*="product"], [class*="card"]').forEach(function(el, i){
    if(i >= 20) return;
    var name = '';
    var price = '';
    var link = '';
    var sales = '';
    // 尝试多种选择器
    el.querySelectorAll('a').forEach(function(a){
      if(a.href && a.href.includes('mall') && !link) link = a.href;
    });
    var texts = el.innerText.split('\n').filter(function(t){ return t.trim(); });
    texts.forEach(function(t){
      t = t.trim();
      if(!name && t.length > 5 && t.length < 100 && !/^\d|^¥|^¥|已售/.test(t)) name = t;
      if(!price && /^[¥¥]?\d+\.?\d*$/.test(t.replace(/[¥¥,]/g, ''))) price = t;
      if(!sales && /已售|销量|付款/.test(t)) sales = t;
    });
    if(name) items.push({name: name.substring(0, 80), price: price, link: link, shop: '', sales: sales});
  });
  return JSON.stringify(items);
})()

结果格式

搜索完成后,以表格形式展示:

| # | 商品名称 | 价格 | 店铺 | 销量 |
|---|---------|------|------|------|
| 1 | xxx     | ¥xx  | xxx  | xxx  |

附上商品链接方便用户点击查看。

多平台比价

当用户要求"比价"或"哪个最便宜"时:

  1. 依次在京东、淘宝搜索同一关键词
  2. 提取各平台 top-5 结果
  3. 按价格排序,标注平台来源
  4. 给出购买建议

翻页

如果用户要求更多结果:

  • 京东:open https://search.jd.com/Search?keyword={query}&page={2n-1}(page=1,3,5,7...)
  • 淘宝:open https://s.taobao.com/search?q={query}&s={n*44}(s=0,44,88...)
  • 天猫:open URL 加 &s={n*60}
  • 抖音:向下滚动 evaluate window.scrollTo(0, document.body.scrollHeight) 然后 wait 2000ms

重要注意事项

  1. 自适应: 电商站点频繁改版,上述 JS 选择器是参考。如果提取到 0 条结果,先 snapshot 查看页面结构,根据实际 DOM 调整选择器
  2. 反爬处理: 如果页面显示验证码或空白,wait 5000ms 后重试。连续失败 3 次则告知用户
  3. headed 模式: 淘宝/抖音建议用 headed: true,headless 更容易被检测
  4. 价格过滤: 用户如果指定价格范围,在 URL 参数中添加(京东: &ev=exprice_{min}-{max},淘宝: &filter=reserve_price[{min},{max}])
  5. 排序: 京东排序参数 &psort=3(价格升序) &psort=4(价格降序) &psort=5(销量)
  6. 编码: 搜索关键词需要 URL 编码,使用 encodeURIComponent