修复用户未登录时异步请求会跳转到登陆页的bug

@@ -28,11 +28,11 @@ class HomeController extends AbstractAction
         // @todo 为了方便测试，支持传uid参数
         $uid = $this->getUid();
         if (!$uid) {
-            $this->_uid = $this->get('uid', 8826435); //$this->getUid(true);
+//            $this->_uid = $this->get('uid', 8826435); //$this->getUid(true);
         }
 
         $action = $this->getRequest()->getActionName();
-        if (!$this->_uid && $action !== 'index') {
+        if (!$this->_uid && $action !== 'index' && $this->isAjax()) {
             $this->go(Helpers::url('/signin.html'));
         }