从Angular 2组件中的CDN加载CSS

正如标题所说，我想在Angular 2组件中包含外部CSS.这是我现在的操作方式:

As the title says, i want to include external css in an Angular 2 component. Here's how i am doing it now:

import { Component, OnInit } from '@angular/core';

@Component({
    selector: 'app-auth',
    templateUrl: './auth.component.html',
    styleUrls: [
        'https://fonts.googleapis.com/css?family=Dosis:400,500,600,700',
        'http://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css',
        './assets/css/bootstrap.min.css',
        './assets/css/main.css',
        './assets/css/responsive.css',
        './auth.component.css',
    ],
})
export class AuthComponent implements OnInit {

    constructor() { }

    ngOnInit() {
    }

}

前两个URL不起作用.我遇到错误:

The first two URLs don't work. I'm getting an error:

ncaught Error: Cannot find module "./https://fonts.googleapis.com/css?family=Dosis:400,500,600,700"

我可以通过将其直接包含到HTML中来使其工作，但是我认为这不是正确的方法.

I can make it work by including it directly into the HTML, but i don't think that's the right way to do it.

我什至尝试使用没有帮助的encapsulation: ViewEncapsulation.None,.

I even tried using encapsulation: ViewEncapsulation.None, that didn't help.