优化url,多应用之间不能互相根据路由生成url,没有研究透

app/index/controller/Index.php

@@ -6,6 +6,7 @@ use app\model\Category;
 use app\model\Nav;
 use app\model\Post;
 use app\model\PostCategory;
+use think\facade\Route;
 use think\facade\View;
 use think\Request;
 
@@ -19,8 +20,6 @@ class Index extends Common
   public function index()
   {
     //
-
-    
     $sub_category = [];
 
     if(!empty($this->request->param('category_id'))){