将json数据从http服务传递到组件Angular 2

Question

我有单独的requests.service.ts和schedule.ts。 我无法通过从requests.service.ts方法返回的json，即使我在返回时映射它。

我对request.service.ts

import { Injectable } from '@angular/core'; 
import { Http, RequestOptions, Headers } from "@angular/http"; 
@Injectable() 
export class LoginService { 
    constructor(public http: Http) { }  
     requestMethod() {  
      return this.http.get(url).map(res => res.json()) 
     } 
} 

我对schedule.ts

let data = this.loginService.requestMethod(); 

代码在哪里data回报Observable {_isScalar: false, source: Observable, operator: MapOperator}...

Answer 1

它是可观的，没有明码数据。您需要订阅并处理它。例如：

let data; 
this.loginService.requestMethod() 
    .subscribe(okData => data = okData); // or this.data = okData if it's a class' field. 

您还可以处理如果请求失败应该做什么。 You can refer to this documentation to learn more about subscription