import Vue from 'vue'

import Router from 'vue-router'

// 一级界面

import Login from './views/Login'

import DashBoard from './views/DashBoard'

// 二级界面

import Home from './views/Home'

import Mine from './views/Mine'

const About = ()=> import('./views/About');

Vue.use(Router);

const router = new Router({

    routes: [

        { path: '/', redirect: '/dashboard' },

        {

            path: '/dashboard',

            name: 'dashboard',

            component: DashBoard,

            children: [

                { path: '/dashboard', redirect: '/dashboard/home' },

                {path: 'home', name: 'home', component: Home,},

                {path: 'about', name: 'about', component: About},

                {path: 'mine', name: 'mine', component: Mine}

            ],

        },

        {path: '/login', name: 'login', component: Login}

    ]

});

// 全局路由前置守卫

router.beforeEach((to, from, next)=>{

    // console.log(to, from);

    if(to.path !== '/login'){ // 验证是否登录

        if(window.isLogin){ // 已经登录 window.isLogin是自己自定义的一个全局变量 登录是 点击一下就是变为true

            next();

        }else { // 没有登录

             next('/login?redirect='+ to.path);

            // next('/login?redirect=/dashboard/mine');

            //next('/login');

        }

    }else { // 不需要验证

        next();

    }

    // 放行

    next();

});

// 全局路由后置守卫

router.afterEach((to, from) => {

   // console.log('来了！');

});

//把router作为实例输出出去

export default router;

<template>

    <div>

        <h2>登录界面</h2>

        <button @click="login">登录</button>

    </div>

</template>

<script>

    export default {

        name: "Login",

        methods: {

            login(){

                // 1. 登录成功

                window.isLogin = true;

                // 2. 获取回调地址

                const redirect = this.$route.query.redirect;

                if(redirect){ // 有回调地址

                    this.$router.push(redirect);

                }else { // 没有回调地址

                    // 去首页

                    this.$router.replace('/');

                }

            }

        }

    }

</script>

<style scoped>

</style>