跟踪文件下载ASP.Net中的命中/计数

Question

有没有办法固有/手动记录ASP站点中访问特定文件的次数.例如,我在服务器上有一些.mp3文件,我想知道每个文件访问过多少次.

追踪这个的最佳方法是什么？

Answer 1

是的,有几种方法可以做到这一点.这是你如何做到这一点.

而不是像直接链接那样从磁盘上提供mp3文件,而是<a href="http://mysite.com/music/song.mp3"></a>写一个HttpHandler服务文件下载.在HttpHandler中,您可以更新数据库中的file-download-count.

文件下载HttpHandler

//your http-handler
public class DownloadHandler : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        string fileName = context.Request.QueryString["filename"].ToString();
        string filePath = "path of the file on disk"; //you know where your files are
        FileInfo file = new System.IO.FileInfo(filePath);
        if (file.Exists)
        {
            try
            {
                //increment this file download count into database here.
            }
            catch (Exception)
            {
                //handle the situation gracefully.
            }
            //return the file
            context.Response.Clear();
            context.Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
            context.Response.AddHeader("Content-Length", file.Length.ToString());
            context.Response.ContentType = "application/octet-stream";
            context.Response.WriteFile(file.FullName);
            context.ApplicationInstance.CompleteRequest();
            context.Response.End();
        }
    }
    public bool IsReusable
    {
        get { return true; }
    }
}  

Web.config配置

//httphandle configuration in your web.config
<httpHandlers>
    <add verb="GET" path="FileDownload.ashx" type="DownloadHandler"/>
</httpHandlers>  

从前端链接文件下载

//in your front-end website pages, html,aspx,php whatever.
<a href="FileDownload.ashx?filename=song.mp3">Download Song3.mp3</a>

此外,您可以将mp3web.config中的扩展名映射到HttpHandler.要做到这一点,你必须确保,你配置你的IIS将.mp3扩展请求转发到asp.net工作进程而不是直接提供,并确保mp3文件不在处理程序捕获的同一位置,如果在同一位置的磁盘上找到该文件,则HttpHandler将被覆盖,并且该文件将从磁盘提供.

<httpHandlers>
    <add verb="GET" path="*.mp3" type="DownloadHandler"/>
</httpHandlers>