diff --git a/Access_Core.php b/Access_Core.php
index 544d7cc..e66f39a 100644
--- a/Access_Core.php
+++ b/Access_Core.php
@@ -231,11 +231,9 @@ class Access_Core
                 ->from('table.access_log'))[0]['count'];
 
         # 分类型绘制24小时访问图
-        $this->overview['chart']['xAxis']['categories'] = json_encode(array(
-            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-        ));
+        $this->overview['chart']['xAxis']['categories'] = Json::encode(range(0, 23));
         foreach (array('ip', 'uv', 'pv') as $type) {
-            $this->overview['chart']['series'][$type] = json_encode($this->overview[$type]['today']['hours']);
+            $this->overview['chart']['series'][$type] = Json::encode($this->overview[$type]['today']['hours']);
         }
         $this->overview['chart']['title']['text'] = _t('%s 统计', date("Y-m-d"));
     }
diff --git a/Action.php b/Action.php
index 56c84ea..9195151 100644
--- a/Action.php
+++ b/Action.php
@@ -1,17 +1,14 @@
 <?php
 require_once __DIR__ . '/Access_Bootstrap.php';
 
-class Access_Action implements Widget_Interface_Do
+class Access_Action extends Typecho_Widget implements Widget_Interface_Do
 {
-
-    private $response;
-    private $request;
     private $access;
 
-    public function __construct()
+    public function __construct($request, $response, $params = null)
     {
-        $this->response = Typecho_Response::getInstance();
-        $this->request = Typecho_Request::getInstance();
+        parent::__construct($request, $response, $params);
+
         $this->access = new Access_Core();
     }
 
@@ -33,7 +30,6 @@ class Access_Action implements Widget_Interface_Do
 
     public function ip()
     {
-        $this->response->setContentType('application/json');
         $ip = $this->request->get('ip');
         try {
             $this->checkAuth();
@@ -64,7 +60,7 @@ class Access_Action implements Widget_Interface_Do
                 );
             }
         }
-        exit(Json::encode($response));
+        $this->response->throwJson($response);
     }
 
     public function deleteLogs()