无法从角度路由器获取路径或 url

Question

我无法从 ActivatedRoute 或路由器导入中获取 URL 或路径。它为路径“”输出空白，为 URL 输出“/”。我记得使用的是工作版本。唯一能捕获正确路由的是Router.events。我也无法订阅 ActivatedRoute 中的 URL。这是代码

import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';
import { Router, ActivatedRoute, UrlSegment, NavigationStart, RoutesRecognized } from '@angular/router';

@Component({
  selector: 'api-dashboard',
  templateUrl: './dashboard.component.html',
  styleUrls: ['./dashboard.component.css']
})
export class DashboardComponent implements OnInit {

  routePath: string = '';

  constructor(
    private _r: Router,
    private _ar: ActivatedRoute) {
    this._r.events.subscribe((event: any) => {
      if (event instanceof RoutesRecognized) {
          // '/teams' output with route http://localhost:4200/teams
        console.log(event.url);
      }
      // NavigationStart // NavigationEnd // NavigationCancel // NavigationError // RoutesRecognized
    });

  }


  ngOnInit() {
    console.log(this._ar.pathFromRoot.toString()); // Blank output with route http://localhost:4200/teams
    console.log(this._ar.routeConfig.path.toString());  // Blank output with route http://localhost:4200/teams
    console.log(this._ar.snapshot.url);  // Blank output with route http://localhost:4200/teams
    this._ar.url.subscribe((urlsegment: UrlSegment[]) =>{
      console.log(urlsegment) // Unable to subscribe with route change to /teams
    })
  }

}

我在这里缺少什么？我看过这个Angular router url returns slash

我的路线：

const APPMainRoutes: Routes = [
    {path: '', redirectTo: '/login', pathMatch: 'full'},
    {path: 'teams', component: CollaborateComponent},
    {path: 'login', component: LoginComponent},
];

我的版本：

Angular CLI：6.1.4 节点：10.7.0 操作系统：linux x64 角度：6.1.4 ... 动画、cli、common、编译器、compiler-cli、核心、表单 ... http、语言服务、平台浏览器 ...平台-浏览器-动态，路由器

包版本

@angular-devkit/architect 0.7.4 @angular-devkit/build-angular 0.7.4 @angular-devkit/build-optimizer 0.7.4 @angular-devkit/build-webpack 0.7.4 @angular-devkit/核心 0.7.4 @angular-devkit/原理图 0.7.4 @角/cdk 6.4.6 @角/材料6.4.6 @ngtools/webpack 6.1.4 @原理图/角度 0.7.4 @原理图/更新 0.7.4 rxjs 6.2.2 打字稿2.7.2 webpack 4.9.2

Answer 1

你可以像这样获取 url 信息：

ngOnInit() {
    console.log(this._r.url);
  }

如果你需要在 url 中获取 queryParams 你可以得到：

this._r.snapshot.queryParamMap

Answer 2

您可以检查 instanceof NavigationStart 和 NavigationEnd

这是一个例子

在app.component.ts

import { Component, OnInit } from '@angular/core';
import { Router, NavigationStart, NavigationEnd } from '@angular/router';

export class AppComponent {

  constructor(private router: Router) { }

  ngOnInit() {

    this.router.events.subscribe((event: any) => {
      if(event instanceof NavigationStart) {
        console.log('start => ',event.url);
      }
      if(event instanceof NavigationEnd) {
        console.log('end => ',event.url);
      }
    });
  }
}

Stackblitz 演示

Answer 3

我试图访问 url 或路径的组件是组件树的主机/父/并行组件。以上所有故障都允许捕获正确的路径inside 路由组件，但不能捕获父/主机/并行树组件。只有 Router.events 在那里工作。令人惊讶的是，我无法在父/主机内捕获并使用 ActivatedRoute.url.subscribe。

<app-cmp>
Router and ActivatedRoute does not Work here. Only Router.events Work here
<router-outlet>
<team-cmp>Router and ActivatedRoute Works here</team-cmp>
</router-outlet>
<sidebar-cmp>
Router and ActivatedRoute does not Work here. Only Router.events Work here
<sidebar-cmp>
</app-cmp>

这适用于主机/父/并行树 - 或：

// inject in constructor
constructor( private _router: Router) {

// Call below anywhere within Init or Constructor etc
this._router.events.subscribe((event: any) => {
      if (event instanceof RoutesRecognized) {
        console.log(event.url); // WORKS
      }
      // NavigationStart // NavigationEnd // NavigationCancel // NavigationError // RoutesRecognized
    });

}

Answer 4

如果一切都失败了，您可以使用全局的location.pathname