Angular 9-如何将2个http.get合并为一个可观测对象

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

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

  getCombinedData() {
    const request1$ = this.http.get('https://api.example.com/data1');
    const request2$ = this.http.get('https://api.example.com/data2');

    return forkJoin([request1$, request2$]);
  }
}

import { catchError, of } from 'rxjs';
import { retry } from 'rxjs/operators';

// ... 在YourService中

getCombinedData() {
  const request1$ = this.http.get('https://api.example.com/data1').pipe(
    retry(2), // 重试2次
    catchError(error => {
      console.error('Request 1 failed', error);
      return of(null); // 返回默认值
    })
  );

  const request2$ = this.http.get('https://api.example.js/data2').pipe(
    retry(2),
    catchError(error => {
      console.error('Request 2 failed', error);
      return of(null);
    })
  );

  return forkJoin([request1$, request2$]);
}