add server

manage-server/app/Http/Controllers/CommonController.php

     }
 
     public function server_json(Request $request) {
-        $disk = Storage::disk('public');
+        $disk = Storage::disk('local');
         $json_string = $disk->get("server.json");
         // 用参数true把JSON字符串强制转成PHP数组  
         $data = json_decode($json_string, true);