logoutaction.java

来自「A Java web application, based on Struts 」· Java 代码 · 共 60 行

/* @LICENSE_COPYRIGHT@ */
package net.sf.irunninglog.servlet.action;

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

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

import net.sf.irunninglog.servlet.RequestProcessor;
import net.sf.irunninglog.servlet.UserContainer;

/**
 * Log the current user out of the application.  This will invalidate the
 * user's HTTP session and transition him to the appropriate resource.
 *
 * @author <a href="mailto:[e-mail]">Allan Lewis</a>
 * @version $Revision: 1.1.1.1 $ $Date: 2005/06/23 01:49:00 $
 * @since iRunningLog 1.0
 */
public final class LogoutAction extends BaseAction {

    /** <code>Log</code> instance for this class. */
    private static final Log LOG = LogFactory.getLog(LogoutAction.class);

    /**
     * Log the user out of the application and forward control to the
     * logout page.
     *
     * @param mapping The <code>ActionMapping</code> used to select this
     *                instance
     * @param form The optional <code>ActionForm</code> bean for this request
     * @param request The HTTP request being processed
     * @param response The HTTP response being processed
     * @param container The <code>UserContainer</code> object for the current
     *                  user
     * @return The forward describing where/how to forward control
     * @exception Exception if the application business logic throws
     *            an exception
     */
    public ActionForward executeAction(ActionMapping mapping,
                                       ActionForm form,
                                       HttpServletRequest request,
                                       HttpServletResponse response,
                                       UserContainer container)
                                                             throws Exception {
        if (LOG.isDebugEnabled()) {
            LOG.debug("executeAction: Logging '" + container.getUserName()
                      + "' out of the application");
        }

        container.logout();
        return mapping.findForward(RequestProcessor.FORWARD_SUCCESS);
    }

}