diff --git a/application/common/controller/Backend.php b/application/common/controller/Backend.php
index 77a5f817..41189ab5 100644
--- a/application/common/controller/Backend.php
+++ b/application/common/controller/Backend.php
@@ -8,6 +8,7 @@ use think\Controller;
 use think\Hook;
 use think\Lang;
 use think\Session;
+use fast\Tree;
 
 /**
  * 后台控制器基类
@@ -124,6 +125,10 @@ class Backend extends Controller
                 Hook::listen('admin_nologin', $this);
                 $url = Session::get('referer');
                 $url = $url ? $url : $this->request->url();
+                if ($url == '/') {
+                    $this->redirect('index/login', [], 302, ['referer' => $url]);
+                    exit;
+                }
                 $this->error(__('Please login first'), url('index/login', ['url' => $url]));
             }
             // 判断是否需要验证权限
@@ -431,6 +436,12 @@ class Backend extends Controller
         $searchfield = (array) $this->request->request("searchField/a");
         //自定义搜索条件
         $custom = (array) $this->request->request("custom/a");
+        //是否返回树形结构
+        $istree = $this->request->request("isTree", 0);
+        if($istree) {
+            $word = [];
+            $pagesize = 99999;
+        }
         $order = [];
         foreach ($orderby as $k => $v)
         {
@@ -481,6 +492,15 @@ class Backend extends Controller
                     ->field("{$primarykey},{$field}")
                     ->field("password,salt", true)
                     ->select();
+            if($istree) {
+                $tree = Tree::instance();
+                $tree->init(collection($list)->toArray(), 'pid');
+                $list = $tree->getTreeList($tree->getTreeArray(0), 'name');
+                foreach ($list as &$item) {
+                    $item = str_replace(' ', ' ', $item);
+                }
+                unset($item);
+            }
         }
         //这里一定要返回有list这个字段,total是可选的,如果total<=list的数量,则会隐藏分页按钮
         return json(['list' => $list, 'total' => $total]);