是否可以注入与angular2的界面？

我认为这与接口上缺少的@Injectable()装饰器有关,但似乎这是不允许的.

问候.

当CoursesserviceInterface实现为接口时,TypeScript编译器会抱怨“CoursesserviceInterface找不到名称”：

import {CoursesserviceInterfacE} from './Coursesservice.interface';
import {CoursesservicE} from './Coursesservice.service';
import {Coursesservicemock} from './Coursesservicemock.service';
bootstrap(AppComponent,[
  ROUTER_PROVIDERS,Globalservice,provide(CoursesserviceInterface,{ useClass: Coursesservicemock })
  ]);

但以CoursesserviceInterface为界面：

import {InjectablE} from 'angular2/core';
import {CoursE} from './Course.class';
//@Injectable()
export interface CoursesserviceInterface {
    getAllCourses(): Promise<Course[]>;//{ return null; };
    getCourse(id: number): Promise<Course>;// { return null; };
    remove(id: number): Promise<{}>;// { return null; };
}

当服务是一个类时,TypeScript编译器不再抱怨：

import {InjectablE} from 'angular2/core';
import {CoursE} from './Course.class';
@Injectable()
export class CoursesserviceInterface {  
    getAllCourses() : Promise<Course[]> { return null; };
    getCourse(id: number) :Promise<Course> { return null; };
    remove (id: number) : Promise<{}> { return null; };
}