vue路由实现登录拦截

<template>
 <div>这是登录页面</div>
</template>

<script>
 export default {
  name: "Login"
 }
</script>

<style scoped>

</style>

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import Login from '@/components/Login'


Vue.use(Router)

const router = new Router({
 mode: 'history', //去掉url中的#
 routes: [
 {
  path: '/login',
  name: 'login',
  meta: {
  title: '登录',
  requiresAuth: false, // false表示不需要登录
  },
  component: Login
 },
 {
  path: '/',
  name: 'HelloWorld',
  meta: {
  title: '首页',
  requiresAuth: true, // true表示需要登录
  },
  component: HelloWorld
 },

 ]
})

// 路由拦截，判断是否需要登录
router.beforeEach((to, from, next) => {
 if (to.meta.title) {
 //判断是否有标题
 document.title = to.meta.title;
 }
 // console.log("title",document.title)
 // 通过requiresAuth判断当前路由导航是否需要登录
 if (to.matched.some(record => record.meta.requiresAuth)) {
 let token = localStorage.getItem('token')
 // console.log("token",token)
 // 若需要登录访问，检查是否为登录状态
 if (!token) {
  next({
  path: '/login',
  query: { redirect: to.fullPath }
  })
 } else {
  next()
 }
 } else {
 next() // 确保一定要调用 next()
 }
})

export default router;

localStorage.setItem('token', '12345678910')