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(推荐)

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' }]

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;  }}