关于angular2通道使用ts

//app.component.ts

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

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.scss'],
    //或者在app.module.ts文件中引入
    providers:[DatePipe]
})
export class AppComponent implements OnInit {
    date:Date = new Date();
    constructor(private datepipe:DatePipe ) { 
        this.date = this.datepipe.transform(this.date,"yyyy-MM-dd HH:mm:ss");
        console.log(this.date);
    }
}

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        HttpModule,
        SharedModule.forRoot(),
    ],
    providers: [DatePipe],
    bootstrap: [AppComponent]
})