Angular2 RC5 ngModule:NameService没有提供者

Question

我对angular2服务有一点小问题.我正在尝试使用ngModule提供程序选项提供服务,但是当我尝试将其添加到我的组件中时,我得到了:没有ServiceName的提供程序(此处为RankingService).

app.module.ts

import { NgModule }         from '@angular/core'
import { BrowserModule }    from '@angular/platform-browser'
import { FormsModule }      from '@angular/forms'
import { HttpModule }       from '@angular/http'

/*
 * App component and routing
 */
import { AppComponent } from './components/app/app.component'
import { routing }      from './app.routes'

/*
 * Services
 */
import { UserService }      from './services/user.service'
import { RankingService }   from './services/ranking.service'

/*
 * Global components
 */
import { HeaderComponent }  from './components/header/header.component'
import { FooterComponent }  from './components/footer/footer.component'

/*
 * App Components
 */
import { RankingComponent }     from './components/ranking/ranking.component'
import { OthersComponent }      from './components/others/others.component'
import { IpixsComponent }       from './components/ipix/ipixs.component'
import { IpixDetailsComponent } from './components/ipix/ipix-details/ipix-details.component'

@NgModule({
    imports: [
        BrowserModule,
        FormsModule,
        HttpModule,
        routing
    ],
    declarations: [
        AppComponent,
        HeaderComponent,
        FooterComponent,
        RankingComponent,
        OthersComponent,
        IpixsComponent,
        IpixDetailsComponent
    ],
    providers: [
        UserService,
        RankingService
    ],
    exports: [ AppComponent ],
    bootstrap: [ AppComponent ]
})
export class AppModule { }

ranking.service.ts

import { Injectable } from '@angular/core'

/*
 * Entities
 */
import { RankingUser } from './../entities/ranking-user'

@Injectable()
export class RankingService {
    getRanking() {
        const users: RankingUser[] = [
            { user: { picture : '', name: 'Edwige Chou' }, correlation: 100 },
            { user: { picture : '', name: 'Mathieu Vandeginste' }, correlation: 78 },
            { user: { picture : '', name: 'Isabelle Isa' }, correlation: 51 },
            { user: { picture : '', name: 'Julien Sergent' }, correlation: 39 },
            { user: { picture : '', name: 'Paul Raul' }, correlation: 23 },
            { user: { picture : '', name: 'Johnatan' }, correlation: 17 }
        ]

        return users
    }
}

ranking.component.ts

/*
 * Dependencies
 */
import { Component, OnInit } from '@angular/core'

/*
 * Services
 */
import { RankingService } from './../../services/ranking.service'

/*
 * Entities
 */
import { RankingUser } from './../../entities/ranking-user'

@Component({
    moduleId: module.id,
    selector: 'ranking',
    templateUrl: 'ranking.component.html',
    styleUrls: [ 'ranking.component.css' ]
})
export class RankingComponent implements OnInit {
    ranking: RankingUser[]

    constructor(
        private rankingService: RankingService
    ) { }

    ngOnInit() {
        this.getRanking()
    }

    getRanking() {
        this.ranking = this.rankingService.getRanking()
        console.log( this.ranking )
    }
}

我看了很多次角度文档,但我没有看到问题,谢谢你的帮助;-)

编辑:当我直接在我的组件中提供服务时,它是有效的,只提供给应用程序模块.

编辑2:我解决了我的问题,这是我的systemjs配置错误,或者更确切地说没有设想管理这种情况:我创建了自己的包(Twinipix)但我的应用程序不包含Twinipix文件夹而是公开文件夹,所以问题来自jspm.config.js文件:

packages[ "Twinipix" ] = {
    main: "../public/main.js"
};

我使用该配置来执行更多逻辑导入(导入整个应用程序而不是单个文件),这是我完美主义者的一面!所以,使用更常见的systemjs配置,一切都完美无缺!

Answer 1

由提问者回答：

我解决了我的问题，这是我的 systemjs 配置错误，或者更确切地说，没有考虑到管理这种情况：我创建了自己的包（Twinipix），但我的应用程序不包含 Twinipix 文件夹，而是包含公共文件夹，所以问题来自 jspm.config.js 文件：

packages[ "Twinipix" ] = {
    main: "../public/main.js"
};

我使用该配置进行更多逻辑导入（导入整个应用程序而不是单个文件），这只是我完美主义的一面！因此，使用更常见的 systemjs 配置，一切都可以完美运行！