[.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：

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();
            }
        }                    
    }
}