diff --git a/app/Http/Middleware/QueryFilter.php b/app/Http/Middleware/QueryFilter.php
index 4452c13..5328e64 100644
--- a/app/Http/Middleware/QueryFilter.php
+++ b/app/Http/Middleware/QueryFilter.php
@@ -3,6 +3,7 @@
 namespace App\Http\Middleware;
 
 use Closure;
+use Illuminate\Support\Facades\Session;
 
 class QueryFilter
 {
@@ -19,7 +20,16 @@ public function handle($request, Closure $next)
         $route_name = data_get($action, 'as');
         if ($route_name && ends_with($route_name, '.index') && $request->isMethod('get')) {
             $session_key = QueryFilter::getKey($route_name);
-            session([$session_key => $request->all()]);
+
+            $filters = array_merge(Session::get($session_key, []), $request->all());
+            if (count($filters) > 0) {
+                Session::put($session_key, $filters);
+                foreach ($filters as $key => $value) {
+                    $request->offsetSet($key, $value);
+                }
+            } else {
+                Session::forget($session_key);
+            }
         }
         return $next($request);
     }
diff --git a/app/Services/AliOssAdapter.php b/app/Services/AliOssAdapter.php
index 5606597..bf14f99 100644
--- a/app/Services/AliOssAdapter.php
+++ b/app/Services/AliOssAdapter.php
@@ -14,7 +14,6 @@ class AliOssAdapter extends BaseAliOssAdapter
      */
     public function getUrl( $path )
     {
-        if (!$this->has($path)) throw new FileNotFoundException($filePath.' not found');
         return ( $this->ssl ? 'https://' : 'http://' ) . $this->endPoint . '/' . ltrim($path, '/');
     }
 }