即使在 angular 2 项目中成功输出后，我也会收到错误消息。为什么这样？

Question

我在 visual studio 2017 年在 angular（版本 2.1.0）中创建了一个项目。一切正常，只是出现如下错误：

EXCEPTION: Uncaught (in promise): Error: Cannot find primary outlet to load 'AppComponent' Error: Cannot find primary outlet to load 'AppComponent'

控制台中出现总共 5 个错误，但在运行.

时它们在代码中不是问题

app.routes.ts

import { ModuleWithProviders } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { AppComponent } from './app.component';
//import { AboutComponent } from './demo/about.component';

const appRoutes: Routes = [

    {
        path: 'Home',
        children: [
            {
                path: 'Index',
                component: AppComponent
            },

            //{
            //    path: 'About',
            //    component: AboutComponent
            //}
        ]
    },
    { path: '**', component: AppComponent }
];

export const routing: ModuleWithProviders = RouterModule.forRoot(appRoutes);

app.component.ts

import { Component, OnInit, ViewContainerRef } from '@angular/core';
// Add the RxJS Observable operators we need in this app.
import './js/ng/rxjs-operators';

@Component({
    moduleId: module.id,
    selector: 'demo-tag',
    templateUrl: './demo/demo-list.html'
})

export class AppComponent {
    constructor(private viewContainerRef: ViewContainerRef) {
        this.viewContainerRef = viewContainerRef;
    }
    name = 'First Angular 2 Application';
}

app.component.html

<router-outlet></router-outlet>

demo-list.html（在app-demo-demo-list.html）

<div>This is demo list page</div>

Answer 1

路由器出口永远不会呈现，因为您没有从任何地方引用 app.component.html。我相信你不应该使用

templateUrl: './demo/demo-list.html'

但是

templateUrl: './app.component.html'

即使在 angular 2 项目中成功输出后，我也会收到错误消息。为什么这样？

I am getting error even after successful output in angular 2 project. Why So?

angular2-template

angular