angular - 尝试使用 paramMap 获取路由参数时出错

Question

export class HeroDetailComponent {
    heroes;
    constructor(private route: ActivatedRoute, private router: Router, private hs : HeroService){
    }
    ngOnInit(){
        this.route.paramMap
            .switchMap((params : ParamMap) => 
                this.hs.getHeroes(params.get('id')))
            .subscribe((heroes) => {
                console.log("checking for heroes n subscribe",heroes);
                this.heroes = heroes})          
    }

}

出现跟随错误

paramMap 在类型“ActivatedRoute”上不存在

Answer 1

import 'rxjs/add/operator/switchMap';

将该导入添加到您的组件中...