这次给大家带来Angular4.x通过路由守卫进行路由重定向步骤详解，Angular4.x通过路由守卫进行路由重定向的注意事项有哪些，下面就是实战案例，一起来看一下。
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;
}
}相信看了本文案例你已经掌握了方法，更多精彩请关注php中文网其它相关文章！
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