vue-router beforeEach跳转路由验证用户登录状态

const routes =[
  {
    path:'/',
    component: resolve => require(['../components/mainTem/Filtrate.vue'],resolve),
    meta:{auth:true,keepAlive: false},
    name:'Filtrate'
  },//首页
  {
    path:'/Home',
    component: resolve => require(['../components/mainTem/Home.vue'],resolve),
    meta:{auth:true,keepAlive: true },
    name:'Home'
  },//登录
  {
    path:'/Login',
    component: resolve => require(['../components/mainTem/Login.vue'],resolve),
    meta:{auth:true,keepAlive: false},
    name:'Login'
  },//最新案例
  {
    path:'/NewCase',
    component: resolve => require(['../components/mainTem/NewCase.vue'],resolve),
    meta:{auth:true,keepAlive: true},
    name:'NewCase'
  },//推荐
  {
    path:'/Recommend',
    component: resolve => require(['../components/mainTem/Recommend.vue'],resolve),
    meta:{auth:true,keepAlive: true},
    name:'Recommend'
  },//个人中心
  {
    path:'/User',
    component: resolve => require(['../components/mainTem/User.vue'],resolve),
    meta:{auth:true,keepAlive: true},
    name:'User'
  },//筛选
  {
    path:'/Filtrate',
    component: resolve => require(['../components/mainTem/Filtrate.vue'],resolve),
    meta:{auth:true,keepAlive: false},
    name:'Filtrate'
  },
  {//详情
    path:'/Detail',
    component: resolve => require(['../components/mainTem/Detail.vue'],resolve),
    meta:{auth:true,keepAlive: false},
    name:'Detail'
  }
]

/** 验证用户是否登录 **/
router.beforeEach((to,from,next) => {
  if(to.matched.some( m => m.meta.auth)) {
    // console.log("先判断是否登录");
    if(to.name=='Login'){
      next();
    }else{
     if(localStorage.getItem('token')){

     //访问服务器缓存数据，判断当前token是否失效
      Vue.http.get("http:xxxx/Login/UserIsLogin?token="+localStorage.getItem('token')+"&url="+to.name,{withCredentials: true}).then(response => response.json()).then(num => {
          // console.log('是否登录',num);
          if(num.code==1001){
            next();
          }else{
            alert('您的token已超时，请重新登录');
            next('/Login');
          }
      })
     }else{
      next('/Login');
     }

    }
 　} else {
    console.log("请先登录");
    next()
  }
})