有没有办法准备一些HTTP请求并在以后用Angular执行它们？

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

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

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

@Injectable()
export class MyService {
  constructor(private http: HttpClient) { }

  // 发送GET请求
  getSomeData() {
    return this.http.get('https://api.example.com/data');
  }

  // 发送POST请求
  postData(data: any) {
    return this.http.post('https://api.example.com/data', data);
  }
}

import { Component } from '@angular/core';
import { MyService } from './my.service';

@Component({
  selector: 'app-my-component',
  template: `
    <button (click)="getData()">获取数据</button>
    <button (click)="postData()">提交数据</button>
  `
})
export class MyComponent {
  constructor(private myService: MyService) { }

  getData() {
    this.myService.getSomeData().subscribe(data => {
      console.log(data);
    });
  }

  postData() {
    const data = { name: 'John', age: 25 };
    this.myService.postData(data).subscribe(response => {
      console.log(response);
    });
  }
}