public function getUserInfo()
 {
     $userId = I('post.user_id');
     $lastOperTime = I('post.lastOperTime');
     $ret = array('success' => false);
     if (session('userId') && session('userId') == $userId && session('confirmTime') && session('confirmTime') == $lastOperTime) {
         $model = new \Home\Model\UserModel();
         $userInfo = $model->getUserById($userId);
         if ($userInfo) {
             $ret['success'] = true;
             $ret['userInfo'] = $userInfo;
         }
     }
     $this->ajaxReturn($ret);
 }