优化退回登录页面功能

src/router.js

@@ -46,8 +46,10 @@ router.beforeEach((to, from, next) => {
         // 加入/login判断，防止vue-router报错
         if(!token && to.path !== "/login") {
             next('/login')
+            return
         } else {
             next()
+            return
         }
     } else {
         next()