Angular2 - 没有LoggedInGuard的提供者

Question

我正在制作一个Anuglar2 rc-4网络应用程序。 我正在尝试限制路由，但是当我添加我的登录守卫时，它告诉我没有提供商。 我的正常登录服务代码工作正常，就在我尝试添加登录保护和canActive路由时。 有关如何解决此错误的任何想法？

routes.ts

import { RouterConfig } from '@angular/router';
import { Home } from './components/home/home';
import { Login } from './components/login/login';
import { DashBoard } from './components/dashboard/dashboard';
import { User } from './components/user/user';
import { Store } from './components/store/store';
import { LoggedInGuard } from './models/logged-in.guard.ts'; 

export const routes: RouterConfig = [
    { path: '', redirectTo: 'home', pathMatch: 'full' },
    { path: 'home', component: Home, canActivate: [LoggedInGuard] },
    { path: 'login', component: Login },
    { path: 'dashboard', component: DashBoard },
    { path: 'user', component: User },
    { path: 'store', component: Store },
    { path: '**', redirectTo: 'home' }
];

boot.ts

import { bootstrap } from '@angular/platform-browser-dynamic';
import { FormBuilder } from '@angular/common';
import { provideRouter } from '@angular/router';
import { HTTP_PROVIDERS, JSONP_PROVIDERS } from '@angular/http';
import { App } from './components/app/app';
import { routes } from './routes';

bootstrap(App, [
    HTTP_PROVIDERS,
    FormBuilder,
    provideRouter(routes)
]);

登录in.guard.ts

import { Injectable } from '@angular/core';
import { Router, CanActivate } from '@angular/router';
import { LoginService } from '../services/login.service';

@Injectable()
export class LoggedInGuard implements CanActivate {
  constructor(private ls: LoginService) {}

  canActivate() {
    return this.ls.isLoggedIn();
  }
}

Answer 1

您必须在应用程序引导功能中注入LoggedInGuard服务

bootstrap(App, [
    HTTP_PROVIDERS,
    FormBuilder,
    provideRouter(routes),
    LoggedInGuard // injected LoggedInGuard service provider here
]);

注意：对于当前的角度2更新版本（rc.6），这个答案是不一样的。升级时你需要创建一个NgModule ，你要在一个地方包装所有依赖项，那时LoggedInGuard会去`NgModule的内部providers选项

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