Building Web Apps with Spring 5 and Angular

Invoking server APIs using the Angular HTTP service

In this section, you will learn about some of the key aspects related with usage of the Angular HTTP service APIs for having Angular app communicate with server APIs such as Spring RESTful APIs. Note, the HTTP service is part of HttpModule:

1. Create a data service: Create a class, namely, DoctorService in a file, namely, doctor.service.ts and annotate it with @Injectable. 
2. Inject the HTTP service in the constructor of this service class. The following is the sample code:

        import { Injectable } from '@angular/core';        import { Http } from '@angular/http';        @Injectable()        export class DoctorService {          //          // Inject Http Client Service          //          constructor (private http: Http) {}          ...        }

• Create one or more ...