Getting instance of service without constructor injection

Question

I have a @Injectable service defined in bootstrap. I want to get the instance of the service without using constructor injection. I tried using ReflectiveInjector.resolveAndCreate but that seem to create a new instance.

The reason I'm trying to do is I have a base component derived by many components. Now I need to access a service but I don't want to add it to the ctor because I don't want to inject the service on all of the derivative components.

TLDR: I need a ServiceLocator.GetInstance<T>()

UPDATE: Updated code for RC5+: Storing injector instance for use in components

Answer 1

In the updated Angular where ngModules are used, you can create a variable available anywhere in the code:
Add this code in app.module.ts

import { Injector, NgModule } from '@angular/core';       export let AppInjector: Injector;          export class AppModule {       constructor(private injector: Injector) {         AppInjector = this.injector;       }     } 

Now, you can use the AppInjector to find any service in anywhere of your code.

import {AppInjector} from '../app.module';  const myService = AppInjector.get(MyService);