HttpContext.Current.Response 在 mvc 中下载文件

Question

我在 asp.net 中有以下代码

 GetObjectResponse resp = Media.ReadS3Object("data", strKey);
            StreamReader sr = new StreamReader(resp.ResponseStream);

            //Prompt download:
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.ContentType = resp.ContentType; // "text/csv;";
            HttpContext.Current.Response.AppendHeader("Content-Disposition", string.Format("attachment; filename={0}", fname));
            HttpContext.Current.Response.BinaryWrite(UTF8Encoding.Convert(Encoding.UTF8, Encoding.Unicode, Encoding.UTF8.GetBytes(sr.ReadToEnd())));
            HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.End();

它下载文件，我怎样才能通过mvc实现相同的功能。 谢谢

Answer 1

设置 ActionResult 以返回文件。

public ActionResult DownloadFile(string strKey) {
    GetObjectResponse resp = Media.ReadS3Object("data", strKey);
    StreamReader sr = new StreamReader(resp.ResponseStream);


    return File(sr, resp.ContentType, fname);
}