修改

src/router/index.js

@@ -67,6 +67,23 @@ export const constantRoutes = [
         component: () => import('@/views/HomePage/index.vue'),
       },
     ]
+  },
+  {
+    path: '/preview',
+    name: 'Preview',
+    component: Layout,
+    hidden: true,
+    children: [
+      {
+        path: '/preview',
+        component: () => import('@/views/previewPage'),
+        meta: {
+          title: '文件预览',
+          imgstyle: 'ic_list_nav_search_default.png',
+          imgstyleup: 'ic_list_nav_search_check.png',
+        }
+      },
+    ],
   }
 ]
 

src/router/routes/routes-file-temp.js

@@ -923,24 +923,6 @@ const advanceRoutes = {
   ],
 }
 
-//文件预览
-const previewRoutes = {
-  path: '/preview',
-  name: 'Preview',
-  component: Layout,
-  children: [
-    {
-      path: '/preview',
-      component: () => import('@/views/previewPage'),
-      meta: {
-        title: '文件预览',
-        imgstyle: 'ic_list_nav_search_default.png',
-        imgstyleup: 'ic_list_nav_search_check.png',
-      }
-    },
-  ],
-}
-
 export default [
   uploadRoutes,
   statisticsChartsRoutes,