如何在Angular 7中使用字符串添加动态查询参数？

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

// ...

constructor(private http: HttpClient) {}

// ...

addQueryParam() {
  const url = 'https://example.com/api';
  const params = new HttpParams().set('param1', 'value1').set('param2', 'value2');

  const updatedUrl = `${url}?${params.toString()}`;

  this.http.get(updatedUrl).subscribe(response => {
    // 处理响应数据
  });
}