function execute()
 {
     $context = $this->getContext();
     $controller = $context->getController();
     $request = $context->getRequest();
     $user = $context->getUser();
     // 管理者かどうか確認
     if (!$this->get_execute_privilege()) {
         $controller->forward(SECURE_MODULE, SECURE_ACTION);
         return;
     }
     $acs_user_info_row = $user->getAttribute('acs_user_info_row');
     // get
     $form = $request->ACSGetParameters();
     $user_id = $form['user_id'];
     if (ACSUser::get_user_info_row_by_user_id($user_id)) {
         echo ACSMsg::get_msg('System', 'AddUserAction.class.php', 'M001');
         return;
     }
     // ユーザ情報を新規登録する
     $ret = ACSUser::set_user_info($form);
     // ログ登録: ユーザ新規登録
     ACSLog::set_log($acs_user_info_row, 'New User Registration', $ret, "[UserID:{$form['user_id']}]");
     $user_list_url = $this->getControllerPath('System', 'UserList');
     header("Location: {$user_list_url}");
 }