MVC 文件下载

JS

 function DownLoad(path) {
            location.href = 'Download?filePath=' + path;
        }

controller

 public ActionResult Download(string filePath)
{
            filePath = filePath.TrimEnd('/').TrimStart('/');
            var stream = new WebClient().OpenRead(filePath);
            var fileName = System.IO.Path.GetFileName(filePath);
            return File(stream, "text/plain", Url.Encode(fileName));
}