基於NET的免費常用快遞鳥單號查詢api接口調用對接示例

1、應用場景
（1）PC端、移動端應用或網站應用集成運單物流信息查詢功能時，只需要錄入單號即可完成查詢，無需用戶輸入快遞公司。
（2）電商網站要在快遞鳥查詢或者訂閱運單時，可通過單號識別先行判斷物流公司後，再訂閱到快遞鳥。
2、是否需要授權
要Free申請服務
技術文檔請參考快遞鳥官網api：免費查詢快遞接口_100%安全保障_物流即時查詢API-快遞鳥
（一）接入流程：

3、接口描述/說明
API ID：點擊申請
API Key：點擊申請
示例
（1）該接口僅對運單號做出識別，識別可能屬於的一家或多家快遞公司。
（2）接口並不返回物流軌跡，用戶可結合即時查詢接口和訂閱查詢接口完成軌跡查詢、訂閱的動作。
（3）接口識別會返回一家或者多家快遞公司，返回的數據根據快遞鳥大數據分析結果排序，排名靠前的命中率更高。
（4）若識別失敗，快遞鳥返回的匹配結果爲空。
（5）接口支持的消息接收方式爲HTTP POST，請求方法的編碼格式(utf-8)：“application/x-www-form-urlencoded;charset=utf-8”。
（6）請求系統級參數說明：

.net示例：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;

namespace KdGoldAPI
{
    public class KdApiOrderDistinguish
    {
        //電商ID
        private string EBusinessID = "請到快遞鳥官網申請http://www.kdniao.com/ServiceApply.aspx";
        //電商加密私鑰，快遞鳥提供，注意保管，不要泄漏
        private string AppKey = "請到快遞鳥官網申請http://www.kdniao.com/ServiceApply.aspx";
        //請求url
        //測試環境
        private string ReqURL = "http://testapi.kdniao.cc:8081/Ebusiness/EbusinessOrderHandle.aspx";
        //正式環境
        //private string ReqURL = "http://api.kdniao.cc/Ebusiness/EbusinessOrderHandle.aspx";

        /// <summary>
        /// Json方式  單號識別
        /// </summary>
        /// <returns></returns>
        public string orderTracesSubByJson()
        {
            string requestData = "{'LogisticCode': '3967950525457'}";

            Dictionary<string, string> param = new Dictionary<string, string>();
            param.Add("RequestData", HttpUtility.UrlEncode(requestData, Encoding.UTF8));
            param.Add("EBusinessID", EBusinessID);
            param.Add("RequestType", "2002");
            string dataSign = encrypt(requestData, AppKey, "UTF-8");
            param.Add("DataSign", HttpUtility.UrlEncode(dataSign, Encoding.UTF8));
            param.Add("DataType", "2");

            string result = sendPost(ReqURL, param);

            //根據公司業務處理返回的信息......

            return result;
        }

        /// <summary>
        /// Post方式提交數據，返回網頁的源代碼
        /// </summary>
        /// <param name="url">發送請求的 URL</param>
        /// <param name="param">請求的參數集合</param>
        /// <returns>遠程資源的響應結果</returns>
        private string sendPost(string url, Dictionary<string, string> param)
        {
            string result = "";
            StringBuilder postData = new StringBuilder();
            if (param != null && param.Count > 0)
            {
                foreach (var p in param)
                {
                    if (postData.Length > 0)
                    {
                        postData.Append("&");
                    }
                    postData.Append(p.Key);
                    postData.Append("=");
                    postData.Append(p.Value);
                }
            }
            byte[] byteData = Encoding.GetEncoding("UTF-8").GetBytes(postData.ToString());
            try
            {

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.ContentType = "application/x-www-form-urlencoded";
                request.Referer = url;
                request.Accept = "*/*";
                request.Timeout = 30 * 1000;
                request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)";
                request.Method = "POST";
                request.ContentLength = byteData.Length;
                Stream stream = request.GetRequestStream();
                stream.Write(byteData, 0, byteData.Length);
                stream.Flush();
                stream.Close();
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream backStream = response.GetResponseStream();
                StreamReader sr = new StreamReader(backStream, Encoding.GetEncoding("UTF-8"));
                result = sr.ReadToEnd();
                sr.Close();
                backStream.Close();
                response.Close();
                request.Abort();
            }
            catch (Exception ex)
            {
                result = ex.Message;
            }
            return result;
        }

        ///<summary>
        ///電商Sign簽名
        ///</summary>
        ///<param name="content">內容</param>
        ///<param name="keyValue">Appkey</param>
        ///<param name="charset">URL編碼 </param>
        ///<returns>DataSign簽名</returns>
        private string encrypt(String content, String keyValue, String charset)
        {
            if (keyValue != null)
            {
                return base64(MD5(content + keyValue, charset), charset);
            }
            return base64(MD5(content, charset), charset);
        }

        ///<summary>
        /// 字符串MD5加密
        ///</summary>
        ///<param name="str">要加密的字符串</param>
        ///<param name="charset">編碼方式</param>
        ///<returns>密文</returns>
        private string MD5(string str, string charset)
        {
            byte[] buffer = System.Text.Encoding.GetEncoding(charset).GetBytes(str);
            try
            {
                System.Security.Cryptography.MD5CryptoServiceProvider check;
                check = new System.Security.Cryptography.MD5CryptoServiceProvider();
                byte[] somme = check.ComputeHash(buffer);
                string ret = "";
                foreach (byte a in somme)
                {
                    if (a < 16)
                        ret += "0" + a.ToString("X");
                    else
                        ret += a.ToString("X");
                }
                return ret.ToLower();
            }
            catch
            {
                throw;
            }
        }

        /// <summary>
        /// base64編碼
        /// </summary>
        /// <param name="str">內容</param>
        /// <param name="charset">編碼方式</param>
        /// <returns></returns>
        private string base64(String str, String charset)
        {
            return Convert.ToBase64String(System.Text.Encoding.GetEncoding(charset).GetBytes(str));
        }
    }
}