/*路由基本模型*/

/*导入RouterModule，Routes类型*/
import { RouterModule, Routes } from '@angular/router';
import { LoginComponent } from "./login/login.component";

/*定义路由const表示不可改变*/
const routers: Routes = [
 /*
  path：字符串，表示默认登入,
  path为路径 /login component:组件
  component：组件
  pathMatch：为字符串默认为前缀匹配 "prefix"; "full" 为完全匹配。
  redirectTo：指向为路径，既path
  outlet：字符串，路由目标，面对多个路由的情况
  children：Routes 子路由相关
  */
 { path: '', component: LoginComponent },
 // path:路径 /detail/1 :id代表参数相关
 { path: 'detail/:id', component: LoginComponent },
 // 懒加载子模块, 子模块需要配置路由设置启动子组件，如果这样设置了路由，需要在子模块中再定义路由
 { path: 'other', loadChildren:"./demo/demo.module#demoModule" },
 // 重定向，路径为** 表示不能识别的路径信息，重定向到相关路径下
 { path: '**', pathMatch: 'full', redirectTo: '' }
];

/*将路由设置导出,子模块中的路由使用 forChild 而不是 forRoot*/
export const appRouter = RouterModule.forRoot(routers);

@NgModule({
 declarations: [
 ......
 ],
 imports: [
 ......
  appRouter
 ]
})

<router-outlet></router-outlet>

{ path: 'news', outlet: 'let1', component: NewsComponent },
{ path: 'news', outlet: 'let2', component: News2Cmponent },
//模板中
<router-outlet name="let1"></router-outlet>
<router-outlet name="let2"></router-outlet>

<a routerLink="/detail/1" routerLinkActive="active">detail</a>
<a [routerLink]="['/detail', news.id]">{{news.title}}</a>
<a [routerLink]="[{ outlets: { let2: ['news'] } }]">Contact</a>

this.router.navigate(['/detail', this.news.id])
this.router.navigate([{ outlets: { let2: null }}]);

import { Injectable }   from '@angular/core';
import { CanActivate }  from '@angular/router';

@Injectable()
export class AuthService implements CanActivate {
 canActivate() {
  // 这里判断登录状态, 返回 true 或 false
  return true;
 }
}

{ path: '', component: LoginComponent, canActivate:[LoginComponent] },

import { Injectable }   from '@angular/core';
import { CanDeactivate, ActivatedRouteSnapshot, RouterStateSnapshot }  from '@angular/router';

// CanDeactivateComponent 是定义的接口,见下段代码
import { CanDeactivateComponent } from './can-deactivate.omponent';

@Injectable()
export class DeacService implements CanDeactivate<CanDeactivateComponent> {
 canDeactivate(
  canDeactivateComponent: CanDeactivateComponent,
  activatedRouteSnapshot: ActivatedRouteSnapshot,
  routerStateSnapshot: RouterStateSnapshot
 ) {
  // 目标路由和当前路由
  console.log(activatedRouteSnapshot);
  console.log(routerStateSnapshot);

  // 判断并返回
  return canDeactivateComponent.canDeactivate ? canDeactivateComponent.canDeactivate() : true

 }
}

// 接口组件, 返回 true 或 false 如表单发生改变则调用对话框服务
export interface CanDeactivateComponent {
 canDeactivate: () => Observable<boolean> | Promise<boolean> | boolean;
}

{
 path: ...,
 canDeactivate: [DeacService],
  component: ...
}

providers: [
 DeactivateGuardService
]