我使用的是angular路由器^3.4.7，我仍然有routerLinkActive指令的问题。

这是不工作，如果你有多个链接与相同的url加上它似乎不刷新所有的时间。

受到@tomaszbak答案的启发，我创建了一个小组件来完成这项工作

下面是使用RouteData根据当前路由样式化菜单栏项的方法:

routecconfig包含了tab(当前路由)的数据:

@RouteConfig([
  {
    path: '/home',    name: 'Home',    component: HomeComponent,
    data: {activeTab: 'home'},  useAsDefault: true
  }, {
    path: '/jobs',    name: 'Jobs',    data: {activeTab: 'jobs'},
    component: JobsComponent
  }
])

一份布局:

  <li role="presentation" [ngClass]="{active: isActive('home')}">
    <a [routerLink]="['Home']">Home</a>
  </li>
  <li role="presentation" [ngClass]="{active: isActive('jobs')}">
    <a [routerLink]="['Jobs']">Jobs</a>
  </li>

类:

export class MainMenuComponent {
  router: Router;

  constructor(data: Router) {
    this.router = data;
  }

  isActive(tab): boolean {
    if (this.router.currentInstruction && this.router.currentInstruction.component.routeData) {
      return tab == this.router.currentInstruction.component.routeData.data['activeTab'];
    }
    return false;
  }
}

我想在Angular2中使用Twitter Bootstrap风格的导航，但是很难将active类应用到所选链接的父元素上。发现@alex-correia-santos的解决方案完美无缺!

包含选项卡的组件必须导入路由器，并在其构造函数中定义路由器，然后才能进行必要的调用。

这是我的实现的简化版本……

import {Component} from 'angular2/core';
import {Router, RouteConfig, ROUTER_DIRECTIVES} from 'angular2/router';
import {HomeComponent} from './home.component';
import {LoginComponent} from './login.component';
import {FeedComponent} from './feed.component';

@Component({
  selector: 'my-app',
  template: `
    <ul class="nav nav-tabs">
      <li [class.active]="_r.isRouteActive(_r.generate(['Home']))">
        <a [routerLink]="['Home']">Home</a>
      </li>
      <li [class.active]="_r.isRouteActive(_r.generate(['Login']))">
        <a [routerLink]="['Login']">Sign In</a>
      </li>
      <li [class.active]="_r.isRouteActive(_r.generate(['Feed']))">
        <a [routerLink]="['Feed']">Feed</a>
      </li>
    </ul>`,
  styleUrls: ['app/app.component.css'],
  directives: [ROUTER_DIRECTIVES]
})
@RouteConfig([
  { path:'/', component:HomeComponent, name:'Home', useAsDefault:true },
  { path:'/login', component:LoginComponent, name:'Login' },
  { path:'/feed', component:FeedComponent, name:'Feed' }
])
export class AppComponent {
  title = 'My App';
  constructor( private _r:Router ){}
}

基于https://github.com/angular/angular/pull/6407#issuecomment-190179875对@alex-correia-santos的回答进行了小改进

import {Router, RouteConfig, ROUTER_DIRECTIVES} from 'angular2/router';
// ...
export class App {
  constructor(private router: Router) {
  }

  // ...

  isActive(instruction: any[]): boolean {
    return this.router.isRouteActive(this.router.generate(instruction));
  }
} 

像这样使用它:

<ul class="nav navbar-nav">
    <li [class.active]="isActive(['Home'])">
        <a [routerLink]="['Home']">Home</a>
    </li>
    <li [class.active]="isActive(['About'])">
        <a [routerLink]="['About']">About</a>
    </li>
</ul>

在angular的最新版本中，你可以简单地检查router.isActive(routeNameAsString)。例如，请看下面的例子:

 <div class="collapse navbar-collapse" id="navbarNav">
    <ul class="navbar-nav">
      <li class="nav-item" [class.active] = "router.isActive('/dashboard')">
        <a class="nav-link" href="#">داشبورد <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item" [class.active] = "router.isActive(route.path)" *ngFor="let route of (routes$ | async)">
        <a class="nav-link" href="javascript:void(0)" *ngIf="route.childRoutes && route.childRoutes.length > 0"
          [matMenuTriggerFor]="menu">{{route.name}}</a>
        <a class="nav-link" href="{{route.path}}"
          *ngIf="!route.childRoutes || route.childRoutes.length === 0">{{route.name}}</a>
        <mat-menu #menu="matMenu">
          <span *ngIf="route.childRoutes && route.childRoutes.length > 0">
            <a *ngFor="let child of route.childRoutes" class="nav-link" href="{{route.path + child.path}}"
              mat-menu-item>{{child.name}}</a>
          </span>
        </mat-menu>
      </li>
    </ul>
    <span class="navbar-text mr-auto">
      <small>سلام</small> {{ (currentUser$ | async) ? (currentUser$ | async).firstName : 'کاربر' }}
      {{ (currentUser$ | async) ? (currentUser$ | async).lastName : 'میهمان' }}
    </span>
  </div>

确保你没有忘记在你的组件中注入路由器。

在简单的情况下，当有一个链接并且你想应用一些类时，使用routerLinkActive是很好的。但在更复杂的情况下，你可能没有routerLink，或者你需要更多的东西，你可以创建并使用管道:

@Pipe({
    name: "isRouteActive",
    pure: false
})
export class IsRouteActivePipe implements PipeTransform {

    constructor(private router: Router,
                private activatedRoute: ActivatedRoute) {
    }

    transform(route: any[], options?: { queryParams?: any[], fragment?: any, exact?: boolean }) {
        if (!options) options = {};
        if (options.exact === undefined) options.exact = true;

        const currentUrlTree = this.router.parseUrl(this.router.url);
        const urlTree = this.router.createUrlTree(route, {
            relativeTo: this.activatedRoute,
            queryParams: options.queryParams,
            fragment: options.fragment
        });
        return containsTree(currentUrlTree, urlTree, options.exact);
    }
}

然后:

<div *ngIf="['/some-route'] | isRouteActive">...</div>

不要忘记在管道依赖项中包含管道;)