[.NET] 使用HttpClient操作HFS (HTTP File Server)

前言

本篇文章介绍如何使用HttpClient操作HFS (HTTP File Server)，为自己留个纪录也希望能帮助到有需要的开发人员。关于HTTP File Server的介绍、安装、设定，可以参考下列参考资料：

• 快速架设 HTTP 文件服务器 (01 基础篇) - Weithenn

• 快速架设 HTTP 文件服务器 (02 基础分享篇) - Weithenn

• 快速架设 HTTP 文件服务器 (03 分享管理篇) - Weithenn

• 快速架设 HTTP 文件服务器 (04 使用者账号管理篇) - Weithenn

• 快速架设 HTTP 文件服务器 (05 上传文件夹篇) - Weithenn

• 快速架设 HTTP 文件服务器 (06 下载带宽管理篇) - Weithenn

• 快速架设 HTTP 文件服务器 (07 联机管理篇) - Weithenn

• 快速架设 HTTP 文件服务器 (08 完结篇) - Weithenn

功能

AddFile

• Execute

  // Variables
  string url = @"http://localhost:8080/HFS/";
  string fileName = @"AAA.jpg";
  string filePath = @"C:UsersclarkDesktopAAA.jpg";
  
  // Execute
  this.AddFile(url, fileName, File.OpenRead(filePath));
  

• Function

  public void AddFile(string url, string fileName, Stream fileStream)
  {
      #region Contracts
  
      if (string.IsNullOrEmpty(url) == true) throw new ArgumentException();
      if (string.IsNullOrEmpty(fileName) == true) throw new ArgumentException();
      if (fileStream == null) throw new ArgumentException();
  
      #endregion
  
      // FileStream
      using (fileStream)
      {
          // HttpClient
          using (var httpClient = new HttpClient())
          {
              // Boundary
              string boundaryString = "----------------------------" + DateTime.Now.Ticks.ToString("x");
              byte[] boundaryBytes = System.Text.Encoding.ASCII.GetBytes("
  --" + boundaryString + "
  ");
  
              // Header
              string headerString = string.Format("Content-Disposition: form-data; name="{0}"; filename="{1}"
   Content-Type: application/octet-stream
  
  ", "file", fileName);
              byte[] headerBytes = System.Text.Encoding.UTF8.GetBytes(headerString);
  
              // RequestContent               
              using (var memoryStream = new MemoryStream())
              using (var requestContent = new StreamContent(memoryStream))
              {
                  // Headers
                  requestContent.Headers.Add("Content-Type", "multipart/form-data; boundary=" + boundaryString);
  
                  // Content
                  memoryStream.Write(boundaryBytes, 0, boundaryBytes.Length);
                  memoryStream.Write(headerBytes, 0, headerBytes.Length);
                  fileStream.CopyTo(memoryStream);
                  memoryStream.Position = 0;
  
                  // Post
                  using (var response = httpClient.PostAsync(url, requestContent).Result)
                  {
                      // Response
                      if (response == null) throw new InvalidOperationException();
                      if (response.IsSuccessStatusCode == false) throw new InvalidOperationException();
                  }
              }
          }
      }
  }
  

RemoveFile

• Execute

  // Variables
  string url = @"http://localhost:8080/HFS/";
  string fileName = @"AAA.jpg";
  
  // Execute
  this.RemoveFile(url, fileName);
  

• Function

  public void RemoveFile(string url, string fileName)
  {
      #region Contracts
  
      if (string.IsNullOrEmpty(url) == true) throw new ArgumentException();
      if (string.IsNullOrEmpty(fileName) == true) throw new ArgumentException();
  
      #endregion
  
      // HttpClient
      using (var httpClient = new HttpClient())
      {
          // RequestContent      
          using (var requestContent = new FormUrlEncodedContent(new[]
          {
              // Content
              new KeyValuePair<string, string>("action", "delete"),
              new KeyValuePair<string, string>("selection", fileName)
          }))
          {
              // Post
              using (var response = httpClient.PostAsync(url, requestContent).Result)
              {
                  // Response
                  if (response == null) throw new InvalidOperationException();
                  if (response.IsSuccessStatusCode == false) throw new InvalidOperationException();
              }
          }                    
      }
  }