使用 AngularJS + FileSaver.js + .Net MVC 下载文件

Question

我正在尝试下载一个文件，可以是 pdf、cvs、word、jpg 或 png。为此，我使用 angularjs + filesaver.js。不知道为什么，我的下载总是损坏。

有人可以帮助我吗？

Note: midia.Nome - Name of my file. midia.Tipo - The type of the file. midia.Path - Physical path on project. midia.MidiaBytesString - Bytes on Base64 to convert to blob.

<a href="{{midia.path}}" target="_blank" ng-click="Download(midia.MidiaBytesString, midia.Nome, midia.Tipo)">Download</a> <br />

我的文件下载方法：

$scope.Download = function(bytes,nome,tipo){
var file = new File([bytes], nome , {type: "application/octet-stream"});
saveAs(file);
};

我的视图模型

public class MidiaViewModel { public int MidiaId { 得到;放; }

    public string MidiaDescricao { get; set; }

    //public string MidiaPath { get; set; }

    public byte[] MidiaBytes { get; set; }

    public string MidiaBytesString { get; set; }

    public int OsId { get; set; }

    public virtual OsViewModel Os { get; set; }

    public string MidiaNome { get; set; }

    public string MidiaType { get; set; }

    public string MidiaPath { get; set; }

    public long MidiaSize { get; set; }
}

我注册的 Midia：

[HttpPost]
public JsonResult AtualizarMidias(IEnumerable<HttpPostedFileBase> arquivos, IEnumerable<string> descricoes, int osId)
{
    var ordermDeServico = _osService.ObterPorIdLazyLoad(osId);

    foreach (var file in arquivos)
    {

        string targetFolder = HttpContext.Server.MapPath("~/Content/uploads/");
        string targetPath = Path.Combine(targetFolder, file.FileName);


        if (file != null && file.ContentLength > 0)
        {

            var itens = arquivos.ToList();
            var des = descricoes.ToList();
            var index = itens.FindIndex(c => c.FileName == file.FileName);
            var midiaViewModel = new MidiaViewModel
            {
                MidiaType = file.ContentType,
                MidiaNome = file.FileName,
                MidiaPath = targetPath,
                MidiaSize = file.ContentLength,
                MidiaDescricao = des[index].ToString(),
                MidiaBytes = converterArquivo(file)
            };

            var midia = Mapper.Map<MidiaViewModel, Midia>(midiaViewModel);
            midia.OsId = ordermDeServico.OSId;
            file.SaveAs(targetPath);
            _midiaService.Salvar(midia);
        }
    }

    return Json(new { resultado = true }, JsonRequestBehavior.AllowGet);
}

我在哪里调用我的 angular $scope:

[HttpPost]
public string getMidiasOS(int idOS)
{
    var getMidias = _midiaService.ObterMidiaPorIdOs(idOS);
    List<MidiaAngularViewModel> midiaNova = new List<MidiaAngularViewModel>();


    foreach (var midia in getMidias)
    {

        midiaNova.Add(new MidiaAngularViewModel
        {
            Id = midia.MidiaId,
            Path = midia.MidiaPath,
            Tipo = midia.MidiaType,
            Descricao = midia.MidiaDescricao,
            MidiaBytesString = Convert.ToBase64String(midia.MidiaBytes),
            Nome = midia.MidiaNome
        });
    }

    return JsonConvert.SerializeObject(midiaNova);
}

编辑

伙计们，我使用以下 link 中的 Ameni 主题解决了我的问题：download file using angularJS and asp.net mvc

我需要做的就是像 Ameni 主题上的 Post 方法和按路径下载功能一样创建。

Answer 1

只需 add/use download 属性即可。有关下载属性的更多信息，请参见 w3c download documentation。

<a href="{{midia.path}}" download="filename">Download</a>

使用 AngularJS + FileSaver.js + .Net MVC 下载文件

Download a file with AngularJS + FileSaver.js + .Net MVC

angularjs

asp.net-mvc

download

filesaver.js