const routes = [
    {//入口
    path: ‘/‘,
    redirect: ‘/login’,
    component: () => import( ‘@/views/Login/index.vue’ ),
    meta: {title:’’}
    },
    ]

    const whiteList = [‘/login’] //校验白名单
    router.beforeEach((to, from, next) => {
    console.log(to.path)
    if (whiteList.indexOf(to.path) !== -1) {
    //将要去的路由是否在白名单，如果在白名单就往下执行，如果不在白名单则需要校验后执行
    next()
    } else {
    const user = get(‘userInfo’)
    if (user) {
    next()
    } else {
    if (to.path === ‘/login’) {
    next()
    } else {
    next(‘/login’)
    }
    }
    }
    })
    function save(name, data) {
    sessionStorage.setItem(name, JSON.stringify(data))
    }
    function get(name) {
    return JSON.parse(sessionStorage.getItem(name))
    }