一、什么是商品条码查询接口？

1974年6月26日，美国俄亥俄州的一家超市首次使用商品条码完成结算，标志着商品条码正式进入商业应用领域。这项技术通过自动识别和数据采集，极大提升了零售行业的作业效率，减少了人工录入错误，提高了库存管理水平。
如今，商品条码已成为商品在全球流通中的“唯一身份标识”，而商品条码查询接口正是基于这一基础技术，为用户提供快速获取商品信息的能力。用户只需输入13位或14位商品条码，即可获取包括商品名称、品牌、规格、价格、保质期、成分信息等关键数据，广泛服务于消费者、零售商、电商平台、物流企业等多个群体。

二、商品条形码查询接口如何用C#进行调用？

下面我们以阿里云的接口为例，具体代码示例如下：

接口地址：https://market.aliyun.com/apimarket/detail/cmapi00065867
//using System.IO;
//using System.Text;
//using System.Net;
//using System.Net.Security;
//using System.Security.Cryptography.X509Certificates;

        private const String host = "https://tsbarcode.market.alicloudapi.com";
        private const String path = "/barcode/index";
        private const String method = "GET";
        private const String appcode = "你自己的AppCode";

        static void Main(string[] args)
        {
            String querys = "barcode=6921830106820";
            String bodys = "";
            String url = host + path;
            HttpWebRequest httpRequest = null;
            HttpWebResponse httpResponse = null;

            if (0 < querys.Length)
            {
                url = url + "?" + querys;
            }

            if (host.Contains("https://"))
            {
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));
            }
            else
            {
                httpRequest = (HttpWebRequest)WebRequest.Create(url);
            }
            httpRequest.Method = method;
            httpRequest.Headers.Add("Authorization", "APPCODE " + appcode);
            if (0 < bodys.Length)
            {
                byte[] data = Encoding.UTF8.GetBytes(bodys);
                using (Stream stream = httpRequest.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                }
            }
            try
            {
                httpResponse = (HttpWebResponse)httpRequest.GetResponse();
            }
            catch (WebException ex)
            {
                httpResponse = (HttpWebResponse)ex.Response;
            }

            Console.WriteLine(httpResponse.StatusCode);
            Console.WriteLine(httpResponse.Method);
            Console.WriteLine(httpResponse.Headers);
            Stream st = httpResponse.GetResponseStream();
            StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
            Console.WriteLine(reader.ReadToEnd());
            Console.WriteLine("\n");

        }

        public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true;
        }

返回代码如下：

{
  "code": 1,
  "msg": "操作成功",
  "data": {
    "barcode": "6921830106820",
    "brand": "老厨",
    "goods_name": "老厨香辣牛肉干",
    "company": "温州老厨食品有限公司",
    "keyword": "牛肉干",
    "goods_type": "食品、饮料和烟草>>预制食品和罐头>>小吃>>肉干和处理过的肉",
    "category_code": "10005767",
    "category_name": "预制/加工牛肉",
    "image": "http://tanshu-img.oss-cn-hangzhou.aliyuncs.com/barcode/202416/171328157024fb6f.jpg?Expires=1748410862&OSSAccessKeyId=LTAI5tCFqfpS4Mei4vfBxpdn&Signature=Yn70h%2FoTA9gpUu%2F1rEJ0xt4SRXU%3D",
    "spec": "52g",
    "width": "6.2厘米",
    "height": "9.5厘米",
    "depth": "2厘米",
    "gross_weight": "",
    "net_weight": "",
    "price": "",
    "origin_country": "中国",
    "first_ship_date": "",
    "packaging_type": "",
    "shelf_life": "",
    "min_sales_unit": "50(克)",
    "certification_standard": "GB 2726",
    "certificate_license": "SC11233011000581",
    "remark": "checkResult：1；备注：经查，该商品条码已在中国物品编码中心注册；logout_flag：0；login_date：Sep  3 1997 12:00:00:000AM；valid_date：Sep  3 2023 12:00:00:000AM；宽：6.2；单位：CM；高：9.5；深：2；关键字：老厨牌 牛肉干；上市时间：2014-01-01；英文名称：xianglaniurougan；产地：杭州；gpc2020：10005767；"
  }
}