//路由拦截
router.beforeEach((to,from,next)=>{
 //动态生成路由数据
 addRoutes();
 next();
});
function addRoutes(){
 getNavData().then(res=>{  //请求路由数据
  //生成路由数据
   var data = routesData(res.data.result);
   //动态添加
   router.addRoutes(data);
 })
}
//生成路由数据
function routesData(result){
 result.forEach(item=>{
   routes.push({
     path: item.path,
     name: item.name,
     component: () => import('../views/'+item.component)
   })
 })
 return routes
}