如何在IONIC 4中显示数据

export class User {
  id: number;
  name: string;
  email: string;
}

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

@Injectable({
  providedIn: 'root'
})
export class UserService {
  private apiUrl = 'https://example.com/api/users';

  constructor(private http: HttpClient) { }

  getUsers(): Observable<User[]> {
    return this.http.get<User[]>(this.apiUrl);
  }
}

<ion-header>
  <ion-toolbar>
    <ion-title>User List</ion-title>
  </ion-toolbar>
</ion-header>

<ion-content>
  <ion-list>
    <ion-item *ngFor="let user of users">
      <ion-label>{{ user.name }}</ion-label>
      <ion-note slot="end">{{ user.email }}</ion-note>
    </ion-item>
  </ion-list>
</ion-content>

import { Component, OnInit } from '@angular/core';
import { UserService } from './user.service';
import { User } from './user.model';

@Component({
  selector: 'app-user-list',
  templateUrl: './user-list.page.html',
  styleUrls: ['./user-list.page.scss'],
})
export class UserListPage implements OnInit {
  users: User[];

  constructor(private userService: UserService) { }

  ngOnInit() {
    this.userService.getUsers().subscribe(users => {
      this.users = users;
    });
  }
}