未定义Angular2 ng2上传程序上传指令

Question

我试图在我的angular2应用程序中使用ng2上传器，我试图在我的视图中添加一个按钮点击上传操作，我试图像文档一样解释https://github.com/jkuri/ng2-uploader

component.ts

import {Component} from 'angular2/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'demo-app',
  templateUrl: 'app/demo.html',
  directives: [UPLOAD_DIRECTIVES],
})
export class DemoApp {
  uploadFile: any;
  options: Object = {
    url: 'http://localhost:10050/upload'
  };

  handleUpload(data): void {
    if (data && data.response) {
      data = JSON.parse(data.response);
      this.uploadFile = data;
    }
  }
}

component.html

<a href="load" class="clas1" 
       [ng-file-select]="options"
       (onUpload)="handleUpload($event)">

<div>
Response: {{ uploadFile | json }}
</div>

但我在导航器中遇到了以下错误：

错误：ReferenceError:UPLOAD_指令未定义（…）ZoneDelegate。调用@angular2 polyfills。js:332Zone。运行@angular2 polyfills。js:227（匿名函数）@angular2 polyfills。js:576ZoneDelegate。invokeTask@angular2 polyfills。js:365Zone。runTask@angular2 polyfills。js:263drainMicroTaskQueue@angular2 polyfills。js:482ZoneTask。调用@angular2 polyfills。js:434

因此，我查看了安装在节点中的ng2 uploader组件，它如下所示：

///<reference path="../../node_modules/angular2/typings/browser.d.ts"/>
import {Ng2Uploader} from './src/services/ng2-uploader';
import {NgFileSelect} from './src/directives/ng-file-select';
import {NgFileDrop} from './src/directives/ng-file-drop';

export * from './src/services/ng2-uploader';
export * from './src/directives/ng-file-select';
export * from './src/directives/ng-file-drop';

export default {
  directives: [NgFileSelect, NgFileDrop],
  providers: [Ng2Uploader]
}

export const UPLOAD_DIRECTIVES: [any] = [NgFileSelect, NgFileDrop];

所以看起来一切都是正确的，任何人都知道如何修复这个，，也许我应该添加一些东西到我的boot.ts或我的index.html，但到底是什么？？

Answer 1

我将在主HTML文件中尝试以下SystemJS配置：

<script>
  System.config({
    map: {
      'ng2-uploader': 'node_modules/ng2-uploader'
    },
    packages: {
      (...)   
      'ng2-uploader': {
        format: 'register',
        defaultExtension: 'js'
      }
    }
  });
  (...)
</script>