logoffaction.java

这是一个用Struts+Hibernate+Tomcat5.5.9实现的一个“课程管理系统”

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.0.0/xslt/JavaClass.xsl

package struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import struts.Constants;

/**
 * MyEclipse Struts Creation date: 11-13-2005
 * 
 * XDoclet definition:
 * 
 * @struts.action scope="request" validate="true"
 */
public class LogoffAction extends Action {

	// --------------------------------------------------------- Instance
	// Variables

	// --------------------------------------------------------- Methods

	/**
	 * Method execute
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {

		 Log log = LogFactory.getLog(this.getClass().getName());


		HttpSession session = request.getSession();
		String user = (String)session.getAttribute(Constants.USER_KEY);

		if (user != null) {

			if (log.isDebugEnabled()) {
				log.debug("LogoffAction: User [" + user+ "] logged off in session " + session.getId());
			}

		}

		session.removeAttribute(Constants.USER_KEY);
		session.invalidate();

		return (mapping.findForward(Constants.FORWARD_SUCCESS));

	}

}