世界，您好！

代码演示

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

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html'
})
export class AppComponent implements OnInit {
    constructor(
        private router: Router
    ) {}
    ngOnInit() {

    }
}