to control develop env do not use session

@@ -34,6 +34,7 @@ class AbstractAction extends Controller_Abstract
     protected $_uid = 0;
     protected $_uname = '';
     protected $_vip;
+    protected $_useSession = true;
 
     /**
      * 存放模板数据
@@ -53,16 +54,20 @@ class AbstractAction extends Controller_Abstract
         switch (APPLICATION_ENV) {
             case 'production': // 生产
                 $this->_view->assign('rlsEnv', true);
+                $this->_useSession = true;
                 break;
             case 'preview':      // 预览
                 $this->_view->assign('preEnv', true);
+                $this->_useSession = true;
                 break;
             case 'testing':      // 测试
                 $this->_view->assign('testEnv', true);
+                $this->_useSession = true;
                 break;
             case 'develop':      // 开发
             default:
                 $this->_view->assign('devEnv', true);
+                $this->_useSession = false;
                 break;
         }
     }
@@ -261,7 +266,9 @@ class AbstractAction extends Controller_Abstract
      */
     public function setSession($name, $value)
     {
-        Session::start('yohobuy_session', null, 'yohobuy.com')->__set($name, $value);
+        if ($this->_useSession) {
+            Session::start('yohobuy_session', null, 'yohobuy.com')->__set($name, $value);
+        }
     }
 
     /**
@@ -272,7 +279,11 @@ class AbstractAction extends Controller_Abstract
      */
     public function getSession($name)
     {
-        return Session::start('yohobuy_session', null, 'yohobuy.com')->__get($name);
+        if ($this->_useSession) {
+            return Session::start('yohobuy_session', null, 'yohobuy.com')->__get($name);
+        } else {
+            return '';
+        }
     }
 
     /**
@@ -283,9 +294,11 @@ class AbstractAction extends Controller_Abstract
      */
     protected function getUid($useSession = false)
     {
-        // @todo
-        // $useSession = false;
-        
+        // 控制是否启用SESSION
+        if (!$this->_useSession) {
+            $useSession = false;
+        }
+
         if (!$this->_uid) {
             $cookie = $this->getCookie('_UID');
             if (!empty($cookie)) {