我正在从官方教程https://angular.io/docs/ts/latest/tutorial/toh-pt5.html学习Angular 2 . 我在路由方面遇到了一些问题 . 错误消息:类型DashboardComponent是2个模块的声明的一部分:AppRoutingModule和AppModule!我不知道我的错误在哪里,我想我和教程中的一切都一样 .
错误信息:
我的代码:
的AppModule
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
import { DashboardComponent } from './dashboard.component';
import { HeroDetailComponent } from './hero-detail.component';
import { HeroesComponent } from './heroes.component';
import { HeroService } from './hero.service';
import { AppRoutingModule } from './app-routing.module';
@NgModule({
imports: [
AppRoutingModule,
BrowserModule,
FormsModule,
],
declarations: [
AppComponent,
DashboardComponent,
HeroDetailComponent,
HeroesComponent
],
providers: [ HeroService ],
bootstrap: [ AppComponent ]
})
export class AppModule { }
应用路由模块
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { DashboardComponent } from './dashboard.component';
import { HeroesComponent } from './heroes.component';
import { HeroDetailComponent } from './hero-detail.component';
const routes: Routes = [
{ path: '', redirectTo: '/dashboard', pathMatch: 'full' },
{ path: 'dashboard', component: DashboardComponent },
{ path: 'detail/:id', component: HeroDetailComponent },
{ path: 'heroes', component: HeroesComponent }
];
@NgModule({
imports: [ RouterModule.forRoot(routes) ],
exports: [ RouterModule ]
})
export class AppRoutingModule {}
应用组件
import {Component} from "@angular/core";
/**
* Created by lukasfrajt on 13.10.16.
*/
@Component({
selector: 'my-app',
template: `
<h1>{{title}}</h1>
<nav>
<a routerLink="/heroes">Heroes</a>
<a routerLink="/dashboard">Dashboard</a>
</nav>
<router-outlet></router-outlet>`
})
export class AppComponent {
title = 'Tour of Heroes'
}
仪表板组件
import {Component} from "@angular/core";
import {Hero} from "./hero";
import {HeroService} from "./hero.service";
import {Router} from "@angular/router";
@Component({
selector: 'my-dashboard',
moduleId: module.id,
templateUrl: `dashboard.component.html`
})
export class DashboardComponent {
heroes: Hero[] = [];
constructor(private heroService: HeroService , private router: Router)
{
}
ngOnInit(): void{
this.heroService.getHeroes()
.then(heroes => this.heroes = heroes.slice(1, 5));
}
gotoDetail(hero: Hero): void {
let link = ['/detail', hero.id];
this.router.navigate(link);
}
}
谢谢你的帮助
2 回答
我遇到了完全相同的问题,根本原因是代码和角度模块版本不匹配 . 我的角度模块是RC5版本,但我使用商业示例代码 . 所以我刚刚更新了角度版本,一切都还可以 .
我在本教程的“路由”部分中间有一个类似的错误,最后是由缺少的括号引起的,而不是导入DashboardComponent . 可能只是一个“我”的错误,虽然你从未被指示在教程中添加import语句,所以其他人也会遇到这个问题并不是不可思议的 .