asp.net core 动态生成文件下载

一、创建action

 public class importController : BaseController
    {

        private IWebHostEnvironment _hostingEnvironment = null;
        public importController(IWebHostEnvironment hostingEnvironment )
        {
            _hostingEnvironment = hostingEnvironment;
          
        }


        public IActionResult downLoadMuban()
        {

            string path = _hostingEnvironment.ContentRootPath + "/Up/muban.xls";

                var stream = System.IO.File.OpenRead(path);

          
                string fileExt = System.IO.Path.GetExtension(path);
                //获取文件的ContentType
                var provider = new FileExtensionContentTypeProvider();
                var memi = provider.Mappings[fileExt];
                return File(stream, memi, Path.GetFileName(path));
            

        }
}

二、创建超链接

<a href="/import/downLoadMuban">模板</a>

完成！！