logoutaction.java

老外的在线考试

/*
 * CyberTester - J2EE Web application for creating, delivering and managing tests/exams/surveys. 
 * Copyright (C) 2004 CyberDemia Research and Services Pty Ltd
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program (see the file COPYING); if not, write to the
 * Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * See the COPYING file located in the top-level-directory of
 * the archive of this program for complete text of license.
 */
package com.cyberdemia.cybertester;

import javax.servlet.http.*;
import org.apache.struts.action.*;

/**
 * 
 * LogoutAction is a Struts action that performs logout from CyberTester.
 * It cleans up the session.
 * 
 * @version $Revision: 1.3 $ at $Date: 2004/03/15 09:56:27 $ by $Author: alexycyap $
 * @author Alexander Yap
 */
public final class LogoutAction extends Action
{
	public ActionForward execute(ActionMapping mapping, ActionForm form,
		HttpServletRequest request, HttpServletResponse response)
		throws Exception
	{
		HttpSession session = request.getSession(false);
		if (session!=null)
		{
			CyberTesterUtils.getLogger().info("Logging out user "+session.getAttribute(Constants.USER_LOGIN_KEY));
			session.removeAttribute("j_password");
			session.removeAttribute("j_username");
			session.invalidate();
		}
		return mapping.findForward(Constants.SUCCESS);
	}

}