入门

引入 HttpClientModule 模块

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

@NgModule({
  imports: [
    HttpClientModule
  ],
})

注入服务实例

import { HttpClient } from '@angular/common/http';
    
export class AppComponent {
  constructor(private httpClient: HttpClient){}
}

httpClient 的方法

简单的案例

this.httpClient.get('https://jsonplaceholder.typicode.com/todos/1').subscribe(console.log);

返回结果

{
"userId": 1,
"id": 1,
"title": "delectus aut autem",
"completed": false
}