如何在没有接口类的本地脚本angular中绑定数据json？

{
  "users": [
    {
      "name": "John",
      "age": 25,
      "email": "john@example.com"
    },
    {
      "name": "Jane",
      "age": 30,
      "email": "jane@example.com"
    }
  ]
}

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

@Injectable({
  providedIn: 'root'
})
export class DataService {
  private dataUrl = 'assets/data.json';

  constructor(private http: HttpClient) { }

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

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

@Component({
  selector: 'app-root',
  template: `
    <h1>Users</h1>
    <ul>
      <li *ngFor="let user of users">{{ user.name }} ({{ user.age }})</li>
    </ul>
  `,
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  users: any[];

  constructor(private dataService: DataService) { }

  ngOnInit() {
    this.dataService.getData().subscribe(data => {
      this.users = data.users;
    });
  }
}