需求：

最近在做一个网上商城的项目，技术用的是Angular4.x。有一个很常见的需求是：用户在点击“我的”按钮时读取cookie，如果有数据，则跳转到个人信息页面，否则跳转到注册或登录页面

解决

在这里通过Angular的路由守卫来实现该功能。

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就是路由守卫 { path: '', redirectTo: '/home', pathMatch: 'full' }]

2. 路由守卫条件（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); //读取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; } } } //获取当前路由配置信息 var path = route.routeConfig.path; if (path == "login") { if (!userModel.isLogin) { //读取cookie如果没有用户信息，则跳转到当前登录页 return true; } else { //如果已经登录了则跳转到个人信息页面，下面语句是通过ts进行路由导航的 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; }}

总结

以上所述是小编给大家介绍的Angular4.x通过路由守卫进行路由重定向实现根据条件跳转到相应的页面，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！