Angular2“服务”如何@将一个服务注入另一个(单身人士)

import {PlayerCollection} from "<<folder>>/player";

class TeamCollection {    
    constructor(@Inject(PlayerCollection): PlayerCollection) {}
}

所以在重新阅读Pascal Precht： http://blog.thoughtram.io/angular/2015/05/18/dependency-injection-in-angular-2.html这个优秀的帖子后

看到他评论：http://twofuckingdevelopers.com/2015/04/angular-2-singleton-service/

“使用角度2的DI注入的所有内容已经是单身人士，不需要这样的服务”

我去测试，我现在发现的两个都回答了我的问题，使我更加困惑于DI在角色2的话题。

请参阅以下代码：

team.ts

import {BaseCollection,BaseModel} from "./base";
import {PlayerCollection} from './player';
import {Injectable,Inject} from "angular2/angular2";

@Injectable()
export class TeamCollection extends BaseCollection {
    playerCollection: PlayerCollection;
    constructor(@Inject(PlayerCollection) playerCollection: PlayerCollection) {
        super();
        this.playerCollection = playerCollection;
    }

    create(data: Object): TeamModel {
        return new TeamModel(data);
    }
}

player.ts

import {BaseCollection,BaseModel} from "./base";
import {Injectable} from "angular2/angular2";

@Injectable()
export class PlayerCollection extends BaseCollection {
    create(data: Object): PlayerModel {
        return new PlayerModel(data);
    }
}

team.spec.ts

/// <reference path="../../typings.d.ts" />

//VERY IMPORTANT TO ALWAYS LOAD THESE
import 'zone.js';
import 'reflect-metadata';
import 'es6-shim';

import {TeamModel,TeamCollection} from "../../app/model/team";
import {PlayerCollection} from "../../app/model/player";
import {Inject,Injector} from "angular2/angular2";

describe('TeamCollection',() => {
  var teamCollection: TeamCollection;
  var playerCollection: PlayerCollection; 
  beforeEach(() => {
      var injector = Injector.resolveAndCreate([
        TeamCollection,PlayerCollection
      ]);
      teamCollection = injector.get(TeamCollection);  

      var injectorT = Injector.resolveAndCreate([
        PlayerCollection
      ]);
      playerCollection = injector.get(PlayerCollection);
  });

  it('should have a singleton PlayerCollection shared between all classes within the application',() => {
    console.log(teamCollection.playerCollection.uuId);
    console.log(playerCollection.uuId);
  });  
});

只要它们是相同的注射器(var injection)，它们都共享相同的uuID虽然当我使用第二个注射器(var injectorT)时，UUID是不同的，意味着创建一个新的实例来播放PlayerCollection。

现在我的问题是如果我使用组件提供者语法：

@Component({
  selector: 'app',providers: [TeamCollection]
}) 

@Component({
  selector: 'player-list',providers: [PlayerCollection]
})

两者都会共享同一个玩家集合，还是会创建一个新的实例？

编辑：
只要通过引导(..，[ServiceA，ServiceB])方法创建它们即可。

感谢pascal precht http://blog.thoughtram.io/angular/2015/09/17/resolve-service-dependencies-in-angular-2.html