GroupBy/04-程式設計/Trunk/GroupBuy/TruckAP/SendWebApiRequest.cs

using Newtonsoft.Json;
using OT.COM.SignalerMessage;
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;

namespace TruckAP
{
    public class CReqestItem
    {
        public CRequestMessage Req { get; set; }
    }

    public class CReqestPack
    {
        public List<CReqestItem> Reqs { get; set; }
        public string Token { get; set; }
    }

    public class CResponsePack
    {
        public List<CResponseMessage> Reps { get; set; }
    }

    public class SendWebApiRequest
    {
        public string RunEncryptRequest(string i_sURL, CReqestPack i_crm, out string o_sRes)
        {
            string sData = JsonConvert.SerializeObject(i_crm);
            return runRequest(i_sURL, sData, out o_sRes);
        }

        protected string runRequest(string i_sURL, string i_sContent, out string o_sRes,
            [System.Runtime.CompilerServices.CallerLineNumber] int i_nCodeLine = 0,
            [System.Runtime.CompilerServices.CallerMemberName] string i_sMemberName = "",
            [System.Runtime.CompilerServices.CallerFilePath] string i_sSourcePath = "")
        {
            string sRes = null;
            Stream dataStream = null;
            WebResponse response = null;
            StreamReader reader = null;
            string sMsg = null;

            try
            {
                // https://msdn.microsoft.com/zh-tw/library/debx8sh9(v=VS.110).aspx
                // Create a request using a URL that can receive a post.
                WebRequest request = WebRequest.Create(i_sURL);
                // Set the Method property of the request to POST.
                request.Method = "POST";
                // Create POST data and convert it to a byte array.
                request.UseDefaultCredentials = true;
                string postData = i_sContent;

                byte[] byteArray = Encoding.UTF8.GetBytes(postData);
                // Set the ContentType property of the WebRequest.
                request.ContentType = "application/json";
                // Set the ContentLength property of the WebRequest.
                request.ContentLength = byteArray.Length;
                // Get the request stream.
                dataStream = request.GetRequestStream();
                // Write the data to the request stream.
                dataStream.Write(byteArray, 0, byteArray.Length);
                // Close the Stream object.
                dataStream.Close();
                // Get the response.
                response = request.GetResponse();
                // Display the status.
                // Get the stream containing content returned by the server.
                dataStream = response.GetResponseStream();
                // Open the stream using a StreamReader for easy access.
                reader = new StreamReader(dataStream);
                // Read the content.
                string responseFromServer = reader.ReadToEnd();
                // Display the content.

                sRes = responseFromServer;                
            }
            catch (Exception ex)
            {
                sMsg = $"{nameof(runRequest)} unknwon exception. i_sURL={i_sURL}, i_sContent={i_sContent}. Call from {i_sMemberName} {i_sSourcePath}({i_nCodeLine}).";
#if DEBUG
                sMsg += $" Exception={ex.Message}";
                System.Diagnostics.Debug.WriteLine(sMsg);
#endif 
            }
            finally
            {
                if (null != reader)
                {
                    reader.Close();
                }

                if (null != response)
                {
                    response.Close();
                }

                if (null != dataStream)
                {
                    dataStream.Close();
                }

            }

            o_sRes = sRes;
            return sMsg;
        }
    }
}