在ionic 3中将文件上传到服务器

Question

我使用文件传输插件以及文件选择器插件从设备获取所选文件的uri但我总是从服务器获得500错误，除了＆＃39;文件＆＃39; 你可以检查你是否转到api的url。

这是我的.ts文件构造函数和附加方法

＆＃13;

＆＃13;

export class ask {
  fileTransfer: FileTransferObject = this.transfer.create();
  constructor(public navCtrl: NavController, public http: Http, public navParams: NavParams, private transfer: FileTransfer, private file: File, public platform: Platform, private fileChooser: FileChooser) {}

  public attach() {
    let options: FileUploadOptions = {
      fileKey: 'file',
      fileName: 'name.jpg',
      chunkedMode: false,
      mimeType: "image/jpg",
      params: {
        "media_type": this.mediaType
      }
    }
    this.fileChooser.open()
      .then(uri => {
        console.log(uri);
        this.fileTransfer.upload(uri, 'http://darresny.com/file_transfer/', options)
          .then((data) => {
            // success
            console.log('upload success =>', data);
          }, (err) => {
            // error
            console.log('upload err =>', err);
          })
      })
      .catch(e => console.log(e));
  }
}

＆＃13;

＆＃13;

＆＃13;