如何使用Angular中的observables获取API http请求的所有页面中的数据？

import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';

getDataFromApi(): Observable<any> {
  return this.http.get<any>('API_URL');
}

subscribeToData(): void {
  this.getDataFromApi().subscribe(
    (data: any) => {
      // 在这里处理从API获取的数据
      console.log(data);
    },
    (error: any) => {
      // 处理错误情况
      console.error(error);
    }
  );
}

<button (click)="subscribeToData()">获取数据</button>

import { HttpClientModule } from '@angular/common/http';

@NgModule({
  imports: [
    HttpClientModule
  ]
})
export class AppModule { }

export class YourComponent {
  constructor(private http: HttpClient) {}
}