Wie virtuelle Dateien in einer C # MVC Website unterstützen

Dank AaronLS begann ich Suche, wie man einen benutzerdefinierten Handler zu machen, die alle Anforderungen fangen würde. Schade, es war nicht so leicht zu finden.

Zunächst einmal müssen Sie IIS informieren, dass Sie alle Dateien behandelt werden sollen, indem Sie die web.config Aktualisierung:

<system.webServer>
    <httpErrors existingResponse="PassThrough" />
    <modules runAllManagedModulesForAllRequests="true">
        <remove name="FormsAuthentication"/>
    </modules>
</system.webServer>

(Ich weiß es nicht die httperrors existingResponse = „Pass - Through“ wirklich benötigt wird, hätte eine vorherige Lösung , die ich versuchte)

Dann musste ich meine eigenen benutzerdefinierten Handler machen und legen Sie es in der routeconfig up:

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        // So my users can still login
        routes.MapRoute(
            name: "Account",
            url: "Account/{action}/{id}",
            defaults: new { controller = "Account", action = "Index", id = UrlParameter.Optional }
        );

        // For the upload controller to work
        routes.MapRoute(
            name: "Upload",
            url: "Upload/{action}/{id}",
            defaults: new { controller = "Upload", action = "Index", id = UrlParameter.Optional }
        );

        // And finally registrating my custom handler
        routes.Add(new Route("{*path}", new CustomRouteHandler()));

        // This was the original routeconfig
        //routes.MapRoute(
        //    name: "Default",
        //    url: "{controller}/{action}/{id}",
        //    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        //);
    }
}
public class CustomRouteHandler : IRouteHandler
{
    public IHttpHandler GetHttpHandler(RequestContext requestContext)
    {
        return new CustomHttpHandler();
    }
}
public class CustomHttpHandler : IHttpHandler
{
    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
    public void ProcessRequest(HttpContext context)
    {
        // Get the subdomain requested
        var subdomain = context.Request.Url.Authority.Split(new char[] { '.', ':' }).FirstOrDefault();

        // Get the directory info about the requested subdomain
        DirectoryInfo info = new DirectoryInfo(context.Server.MapPath("~/Websites/" + subdomain));

        // Check if subdomain is not empty and exists
        if (!string.IsNullOrEmpty(subdomain) && info.Exists)
        {
            // Get the requested filename
            var filename = context.Request.Url.PathAndQuery.Split(new char[] { '?' }).FirstOrDefault();

            // If the root is requested change to index.html
            if (filename == "/") filename = "/index.html";

            // Translate requested filename to server path
            var fullname = context.Server.MapPath("~/Websites/" + subdomain + filename);

            // Respond the file
            ResponseFile(context, fullname);
        }
        else
        {
            // Subdomain not found so end the request
            context.Response.End();
        }
    }
    public void ResponseFile(HttpContext context, string fullname)
    {
        // Clear the response buffer
        context.Response.Clear();

        System.IO.Stream oStream = null;

        try
        {
            // Open the file
            oStream =
                new System.IO.FileStream
                    (path: fullname,
                    mode: System.IO.FileMode.Open,
                    share: System.IO.FileShare.Read,
                    access: System.IO.FileAccess.Read);

            // **************************************************
            context.Response.Buffer = false;

            // Setting the ContentType
            context.Response.ContentType = MimeMapping.GetMimeMapping(fullname);

            // Get the length of the file 
            long lngFileLength = oStream.Length;

            // Notify user (client) the total file length
            context.Response.AddHeader("Content-Length", lngFileLength.ToString());
            // **************************************************

            // Total bytes that should be read
            long lngDataToRead = lngFileLength;

            // Read the bytes of file
            while (lngDataToRead > 0)
            {
                // Verify that the client is connected or not?
                if (context.Response.IsClientConnected)
                {
                    // 8KB
                    int intBufferSize = 8 * 1024;

                    // Create buffer for reading [intBufferSize] bytes from file
                    byte[] bytBuffers =
                        new System.Byte[intBufferSize];

                    // Read the data and put it in the buffer.
                    int intTheBytesThatReallyHasBeenReadFromTheStream =
                        oStream.Read(buffer: bytBuffers, offset: 0, count: intBufferSize);

                    // Write the data from buffer to the current output stream.
                    context.Response.OutputStream.Write
                        (buffer: bytBuffers, offset: 0,
                        count: intTheBytesThatReallyHasBeenReadFromTheStream);

                    // Flush (Send) the data to output
                    // (Don't buffer in server's RAM!)
                    context.Response.Flush();

                    lngDataToRead =
                        lngDataToRead - intTheBytesThatReallyHasBeenReadFromTheStream;
                }
                else
                {
                    // Prevent infinite loop if user disconnected!
                    lngDataToRead = -1;
                }
            }
        }
        catch (Exception e)
        {
        }
        finally
        {
            if (oStream != null)
            {
                //Close the file.
                oStream.Close();
                oStream.Dispose();
                oStream = null;
            }
            context.Response.Close();
            context.Response.End();
        }
    }
}