14.1 - 快速开始

引入 HttpClientModule 模块

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

注入 HttpClient 服务实例对象，用于发送请求

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

发送请求

import { HttpClient } from "@angular/common/http"
export class AppComponent implements OnInit {
    constructor(private http: HttpClient) {}
    ngOnInit() {
        this.getUsers().subscribe(console.log)
    }
    getUsers() {
        return this.http.get("https://jsonplaceholder.typicode.com/users")
    }
}