angular 4 路由
使用cli命令创建根路由模块 ng g cl app.router
或自己建一个路由配置文件 如:app/app.router.ts
// app/app.router.ts // 将文件修改为 import { RouterModule,Routes } from '@angular/router'; const routes: Routes = [ // 以后在这里改动配置 { path: '**',pathMatch: 'full',redirectTo: '' } ]; // 将路由配置导出为 appRouting 以供调用,子模块中的路由使用 forChild 而不是 forRoot export const appRouting = RouterModule.forRoot(routes);
在根模块中引入路由,为特性模块定义的路由在其模块中引入
// app/app.module.ts import { appRouting } from "./router/router.module" // @NgModule({ // imports: [ ...,appRouting // ...
路由配置
const routes: Routes = [ // path:路径 /news component:组件 { path: 'news',component: Newsomponent },// path:路径 /detail/1 component:组件 { path: 'detail/:id',component: DetailComponent },// 懒加载子模块,子模块需要配置路由设置启动子组件 { path: 'other',loadChildren:"./other/other.module#otherModule" },// 重定向 { path: '**',redirectTo: '' } ];
pathMatch?: string; 默认为前缀匹配 "prefix"; "full" 为完全匹配
outlet?: string; 路由目标
children?: Routes; 子路由的规则
加载路由
在根组件或当前组件的模板中
<router-outlet></router-outlet>
多个路由区域
{ path: 'news',outlet:'let1' component: NewsComponent } { path: 'news',outlet:'let2' component: News2Cmponent }
<router-outlet name="let1"></router-outlet> <router-outlet name="let2"></router-outlet>
即访问 /news/
时同时加载 NewsComponent
和 News2Cmponent
两个组件
链接及访问
<a routerLink="/detail/1" routerLinkActive="active">detail</a> <a [routerLink]="['/detail',news.id]">{{news.title}}</a> <a [routerLink]="[{ outlets: { let2: ['news'] } }]">Contact</a>
routerLinkActive="active"
即在本路由激活时添加样式 .active
或
import { Router } from '@angular/router'; // ... constructor(private router: Router) {} // ... this.router.navigate(['/detail',this.news.id]) this.router.navigate([{ outlets: { let2: null }}]);
路由守卫
创建一个认证服务
// app/auth.service.ts 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; } }
// app/app.router.ts // 增加 CanActivate import { CanActivate ... } from '@angular/router'; // 配置中增加 canActivate 如: { path: 'admin',canActivate:[AuthService] ... }
退出守卫
// app/deac.service.ts 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 } }
// can-deactivate.omponent.ts // 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; }
路由配置
{ path: ...,canDeactivate: [DeacService],component: ... }
模块中添加服务
providers: [ DeactivateGuardService ]