如何编写用于从angular中的服务获取值的模拟数据

import { Observable, of } from 'rxjs';
import { YourDataType } from './your-data-type';

export const mockData: YourDataType[] = [
  // 模拟数据项
];

export const mockDataService = {
  getData(): Observable<YourDataType[]> {
    return of(mockData);
  }
};

import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';
import { YourDataType } from './your-data-type';
import { mockDataService } from './mock-data';

@Injectable({
  providedIn: 'root'
})
export class YourService {
  getData(): Observable<YourDataType[]> {
    return mockDataService.getData();
  }
}