第二章 发送http请求

ng add ng-zorro-antd  安装这个就是直接导入了，不需要我们再次的引入

1 app.module.ts配置

import {HttpClientModule} from '@angular/common/http'
imports: [
 ...
    HttpClientModule,
  ],

2 在发送http请求的组件中配置

import {HttpClient} from '@angular/common/http'
export class ContentComponent implements OnInit {
    public programs:any;
  constructor(public http:HttpClient) { }
  ngOnInit() {
    var url:string="http://192.168.14.15:5000/dj/program?rid=336355127"
    this.http.get(url).subscribe(res=>{
      console.log(res['programs'])
      this.programs=res['programs']
    })
  }
tips:ngOnInit() {}   //相当于onLoad(),mounted()生命周期