京东商品详情接口技术速览：从签名到JSON解析

params = {
    "app_key": "your_app_key",
    "method": "jd.union.open.goods.detail.query",
    "timestamp": "2026-10-12 16:30:00",   # 东八区，格式固定
    "format": "json",
    "v": "1.0",
    "sign_method": "md5",
    "skuId": "100012345678"               # 业务参数，核心入参
}

import hashlib

def make_sign(params, app_secret):
    # 1. 剔除 sign，按 key 的 ASCII 升序排序
    keys = sorted(k for k in params if k != "sign" and params[k] != "")
    # 2. 只拼接 value
    raw = "".join(str(params[k]) for k in keys)
    # 3. 首尾各拼一次 secret
    src = app_secret + raw + app_secret
    # 4. MD5 后转大写
    return hashlib.md5(src.encode("utf-8")).hexdigest().upper()

{
  "jd_union_open_goods_detail_query_response": {
    "code": "0",
    "msg": "success",
    "requestId": "req_20261012163012456",
    "result": {
      "goodsInfo": {
        "skuId": "100012345678",
        "spuId": "100012345600",
        "title": "2026夏季新款纯棉短袖T恤 男女同款宽松版",
        "brandName": "XX品牌",
        "shopName": "XX官方旗舰店",
        "isJdSelf": false,
        "itemUrl": "https://item.jd.com/100012345678.html",

        "priceInfo": {
          "originalPrice": "99.00",
          "discountPrice": "59.00",
          "lowestPrice30Days": "55.00"
        },

        "couponInfo": {
          "hasCoupon": true,
          "finalPrice": "49.00",
          "couponList": [
            {
              "couponId": "cp20261012001",
              "couponDiscount": "10.00",
              "couponDesc": "满59减10元店铺券",
              "endTime": "2026-10-31 23:59:59"
            }
          ]
        },

        "stockInfo": {
          "totalStock": 950,
          "isSale": true,
          "stockStatus": "in_stock"
        },

        "salesInfo": {
          "totalSales": 12580,
          "monthSales": 3210
        },

        "imageInfo": {
          "mainImg": "https://img10.360buyimg.com/n1/jfs/t1/xxx/main.jpg",
          "detailImgList": [
            "https://img10.360buyimg.com/n1/jfs/t1/xxx/d1.jpg",
            "https://img10.360buyimg.com/n1/jfs/t1/xxx/d2.jpg"
          ]
        },

        "skuList": [
          {
            "skuId": "10001234567801",
            "specText": "白色 M",
            "specs": [
              {"name": "颜色", "value": "白色"},
              {"name": "尺码", "value": "M"}
            ],
            "skuPrice": "59.00",
            "skuStock": 320,
            "isAvailable": true
          },
          {
            "skuId": "10001234567803",
            "specText": "红色 S",
            "skuPrice": "59.00",
            "skuStock": 0,
            "isAvailable": false
          }
        ],

        "productParams": [
          {"name": "面料", "value": "100%棉"},
          {"name": "版型", "value": "宽松型"}
        ],

        "commentSummary": {
          "goodRateShow": "97.2",
          "commentCount": 1860
        }
      }
    }
  }
}