Angular等待多个异步post请求，然后调用另一个端点

import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { forkJoin } from 'rxjs';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent {
  constructor(private http: HttpClient) { }

  makeRequests() {
    const request1 = this.http.post('endpoint1', { data: 'request 1' });
    const request2 = this.http.post('endpoint2', { data: 'request 2' });
    const request3 = this.http.post('endpoint3', { data: 'request 3' });

    forkJoin([request1, request2, request3]).subscribe(responses => {
      // 请求全部完成后的处理逻辑
      this.callAnotherEndpoint();
    });
  }

  callAnotherEndpoint() {
    this.http.get('anotherEndpoint').subscribe(response => {
      // 处理另一个端点的响应
    });
  }
}