使用Angular http get从json文件中读取数据

import { HttpClientModule } from '@angular/common/http';
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    HttpClientModule  // 确保导入了HttpClientModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

{
  "users": [
    { "id": 1, "name": "John Doe" },
    { "id": 2, "name": "Jane Doe" }
  ]
}

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

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

  constructor(private http: HttpClient) { }

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

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 }}
      </li>
    </ul>
  `
})
export class AppComponent implements OnInit {
  users: any[] = [];

  constructor(private dataService: DataService) {}

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