/**
  * @return contast_router
  */
 public static final function getInstance()
 {
     if (!isset(self::$_instance) || !self::$_instance instanceof self) {
         self::$_instance = new self();
     }
     return self::$_instance;
 }
 public function routerShutdown(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response)
 {
     $if_in_router_white = $this->check_router($request);
     if ($if_in_router_white) {
         contast_router::getInstance()->setIFrouterWhite(TRUE);
     }
     if (!Yaf_Session::getInstance()->get('userinfo') && !$if_in_router_white) {
         $request->setModuleName('Index');
         $request->setControllerName('Login');
         $request->setActionName('index');
     }
 }
 /**
  * 检测状态
  */
 private function check_login()
 {
     $this->set('userinfo', $this->userinfo);
     $this->set('user_id', $this->user_id);
     if ($this->userinfo == FALSE && !contast_router::getInstance()->getIfrouterWhite()) {
         $this->redirect(helper_common::site_url('login'));
     }
 }