JSON数据到特定类型的数组[Angular]

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

@Injectable({
  providedIn: 'root'
})
export class DataService {
  constructor(private http: HttpClient) { }
}

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';

@Injectable({
  providedIn: 'root'
})
export class DataService {
  constructor(private http: HttpClient) { }

  getData(): Observable<any> {
    return this.http.get<any>('data.json');
  }
}

import { Component, OnInit } from '@angular/core';
import { DataService } from 'path-to-data-service';

@Component({
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponent implements OnInit {
  myArray: MyType[];

  constructor(private dataService: DataService) { }

  ngOnInit(): void {
    this.dataService.getData().subscribe(data => {
      this.myArray = data as MyType[];
    });
  }
}

<ul>
  <li *ngFor="let item of myArray">{{ item.property }}</li>
</ul>