app.UseStaticFiles(); //设置实际目录与虚拟目录  app.UseStaticFiles(new StaticFileOptions { FileProvider = new PhysicalFileProvider(Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot/Files")), RequestPath = new PathString("/jfiles"), //设置Android APK 下载 ContentTypeProvider = new FileExtensionContentTypeProvider(new Dictionary<string, string> { { ".apk","application/vnd.android.package-archive"}, { ".nupkg","application/zip"} }) });