Yii 动作过滤的方法

     protected function _init()
     {
              }

     public function beforeAction($action)
     {
         //黑名单
         $blackList = array('test','login','registe','logout');
         $action = $this->getAction()->getId();
         if(!in_array($action, $blackList)){
             parent::init();
         }
         return TRUE;
     }

    protected $userId = 0;

    public function init()
    {
        header('Content-type:text/html;charset=utf-8');
        Yii::import('ext.functions', true); //加载公共函数
        $this->getUserId();
    }

    //获取用户
    protected function getUserId()
    {
        $userTicket = getRParam('ticket', '');
        Yii::app()->ssoClient->init($userTicket);
        $this->userId = (int)Yii::app()->ssoClient->userid;
    }

    public function filters()
    {
        return array('CheckLogin - login, registe, logout');
    }

    public function filterCheckLogin($chain)
    {
        if($this->userId > 0)
            $chain->run();
        else
            $this->ajaxError(100, '用户验证失败或已过期');
    }