Angular2如何以编程方式获取APP_BASE_HREF

# Angular 2编程方式获取APP_BASE_HREF的方法与案例

typescript
import { Component } from '@angular/core';
import { PlatformLocation } from '@angular/common';
@Component({
  selector: 'app-root',
  template: `
    
      APP_BASE_HREF: {{ appBaseHref }}
    
  `,
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  appBaseHref: string;
  constructor(private platformLocation: PlatformLocation) {
    this.appBaseHref = this.getBaseHref();
  }
  private getBaseHref(): string {
    const baseHref: string = (this.platformLocation as any).location.origin +
      (this.platformLocation as any).location.pathname;
    return baseHref;
  }
}