需求：

最近在做一個網上商城的項目，技術用的是Angular4.x。有一個很常見的需求是：用戶在點擊“我的”按鈕時讀取cookie，如果有數據，則跳轉到個人信息頁面，否則跳轉到注冊或登錄頁面

解決

在這里通過Angular的路由守衛來實現該功能。

1. 配置路由信息

const routes = [ { path: 'home', component: HomeComponent }, { path: 'product', component: ProductComponent }, { path: 'register', component: RegisterComponent }, { path: 'my', component: MyComponent }, { path: 'login', component: LoginComponent, canActivate: [RouteguardService] },//canActivate就是路由守衛 { path: '', redirectTo: '/home', pathMatch: 'full' }]

2. 路由守衛條件（RouteguardService.ts）

import { Injectable, Inject } from "@angular/core";import { DOCUMENT } from "@angular/common";import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router, NavigationStart } from "@angular/router";import userModel from "./user.model";@Injectable()export class RouteguardService implements CanActivate {  constructor(private router: Router, @Inject(DOCUMENT) private document: any) {  }  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {    // this.setCookie("userId", "18734132326", 10);    //讀取cookie    var cookies = this.document.cookie.split(";");    var userInfo = { userId: "", pw: "" };    if (cookies.length > 0) {      for (var cookie of cookies) {        if (cookie.indexOf("userId=") > -1) {          userModel.accout = cookie.split("=")[0];          userModel.password = cookie.split("=")[1];          userModel.isLogin = false;        }      }    }    //獲取當前路由配置信息    var path = route.routeConfig.path;    if (path == "login") {      if (!userModel.isLogin) {        //讀取cookie如果沒有用戶信息，則跳轉到當前登錄頁        return true;      } else {        //如果已經登錄了則跳轉到個人信息頁面，下面語句是通過ts進行路由導航的        this.router.navigate(['product'])      }    }  }  setCookie(cname, cvalue, exdays) {    var d = new Date();    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));    var expires = "expires=" + d.toUTCString();    document.cookie = cname + "=" + cvalue + "; " + expires;  }}

總結

以上所述是小編給大家介紹的Angular4.x通過路由守衛進行路由重定向實現根據條件跳轉到相應的頁面，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對錯新站長站網站的支持！