请考虑以下代码

import { Component,Injectable,OnInit } from '@angular/core';
import { Http,HTTP_PROVIDERS } from '@angular/http';
import 'rxjs/Rx';

@Injectable()
class myHTTPService {
  constructor(private http: Http) {}

  configEndPoint: string = '/my_url/get_config';

  getConfig() {

    return this.http
      .get(this.configEndPoint)
      .map(res => res.json());
  }
}

@Component({
    selector: 'my-app',templateUrl: './myTemplate',providers: [HTTP_PROVIDERS,myHTTPService],})
export class AppComponent implements OnInit {

    constructor(private myService: myHTTPService) { }

    ngOnInit() {
      console.log(this.myService.getConfig());
    }
}

每当我尝试打印出getconfig的结果时，它总会返回

Observable {_isScalar: false,source: Observable,operator: MapOperator}

即使我返回一个json对象。

我如何打印出getConfig的结果？