将服务数据加载到angular组件

// 1. 创建一个服务
// service-name.service.ts
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class ServiceNameService {
  constructor(private http: HttpClient) { }

  getData() {
    return this.http.get('https://example.com/api/data');
  }
}

// 2. 在组件中注入服务
// app.component.ts
import { Component } from '@angular/core';
import { ServiceNameService } from './service-name.service';

@Component({
  selector: 'app-root',
  template: `
    <h1>Data:</h1>
    <ul>
      <li *ngFor="let item of data">{{ item }}</li>
    </ul>
  `
})
export class AppComponent {
  data: any[];

  constructor(private serviceName: ServiceNameService) { }

  ngOnInit() {
    // 3. 在组件中使用服务数据
    this.serviceName.getData().subscribe((response: any) => {
      this.data = response;
    });
  }
}