如何在angular 4中从json文件中获取JSON数据

npm install @angular/common@latest @angular/compiler@latest @angular/core@latest @angular/forms@latest @angular/platform-browser@latest @angular/platform-browser-dynamic@latest @angular/router@latest @angular/animations@latest --save

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

constructor(private http: HttpClient) { }

getData() {
  return this.http.get('assets/data.json');
}

this.getData().subscribe(data => {
  console.log(data);
});