viewtestaction.java

老外的在线考试

/*
 * CyberTester - J2EE Web application for creating, delivering and managing tests/exams/surveys. 
 * Copyright (C) 2003 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.admin.test;

import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import com.cyberdemia.school.*;
import com.cyberdemia.cybertester.*;
import java.util.logging.*;
import com.cyberdemia.cybertester.admin.*;

/**
 * 
 * ViewTestAction is a Struts action to load the data of a test for the
 * test viewer page.
 *  
 * @author Alexander Yap
 */
public final class ViewTestAction extends AbstractAdminAction 
{
	protected ActionForward doPerform(
		ActionMapping mapping, ActionForm form,
		HttpServletRequest request, HttpServletResponse response,
		HttpSession session) throws Exception
	{
		Logger logger = CyberTesterUtils.getLogger();
        Integer testId = CyberTesterUtils.getIntegerParameterOrRequestAttribute(request, AdminConstants.TEST_ID_KEY);
		
		if (testId==null)	
			throw new ServletException("Missing parameter "+AdminConstants.TEST_ID_KEY);

		TestData test = null;
		try
		{
			TestManagerHome tMgrHome = CyberTesterUtils.getTestManagerHome();
			TestManager testMgr = (TestManager)tMgrHome.create();
			test = testMgr.getTestData(testId);
		}
		catch (Exception ex)
		{
			logger.log( Level.SEVERE, "Error getting Test data", ex);
			throw ex;
		}
			
		request.setAttribute( AdminConstants.TEST_DATA_KEY, test );
		request.setAttribute( AdminConstants.TEST_ID_KEY, test.getId() );
		return mapping.findForward(Constants.SUCCESS);
	}
	
}