6 发送http请求

1-1 app.module.ts注册http请求

1.//app.module.ts导入
import { HttpClientModule} from '@angular/common/http';

2.在imports中配置
  imports: [
    HttpClientModule
  ]

1-2app.component.ts中配置

1.//app.component.ts中导入
import {HttpClient} from '@angular/common/http'

2.//请求网易云音乐  
ngOnInit(){
    console.log(this)
    var url:string = "http://localhost:3000/top/playlist?cat=华语";
    console.log(this.http)
    this.http.get(url).subscribe((res:any)=>{
      console.log(res.playlists)
    })
  }

Tips：angular利用subscribe获取数据