將json數據從http服務傳遞到組件Angular 2

Question

我有單獨的requests.service.ts和schedule.ts。 我無法通過從requests.service.ts方法返回的json，即使我在返回時映射它。

我對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()) 
     } 
} 

我對schedule.ts

let data = this.loginService.requestMethod(); 

代碼在哪裏data回報Observable {_isScalar: false, source: Observable, operator: MapOperator}...

Answer 1

它是可觀的，沒有明碼數據。您需要訂閱並處理它。例如：

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

您還可以處理如果請求失敗應該做什麼。 You can refer to this documentation to learn more about subscription