问角--创建服务的正确方法是从服务器检索数据并将其发送给使用它的组件？

EN

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

import { environment } from '../../../environments/environment';
import { TranslateService } from '@ngx-translate/core';

@Injectable({
  providedIn: 'root'
})
export class HttpService {

  constructor(
    private http: HttpClient,
    private translate: TranslateService
  ) { }

  /**
   * General GET request
   *
   * @param {string} url URL of the request
   * @param {HttpParams} [params]
   * @returns {Promise<any>}
   * @memberof HttpService
   */
  async get(url: string, params?: HttpParams): Promise<any> {
    return await this.http.get<any>(`${environment.apiURL}${this.translate.getDefaultLang()}/${url}`, { params: params }).toPromise();
  }
}

import { Injectable } from '@angular/core';
import { HttpService } from '../http/http.service';
import { Product } from 'src/app/models/product';
import { HttpParams } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class ProductService {

  constructor(
    private httpService: HttpService
  ) { }

  async getProductsByCategory(categoryId: string): Promise<Product[]> {
    let res = await this.httpService.get('products', new HttpParams().set('category', categoryId).set('perPage', '1000'));
    return res.data;
  }
}