logoutaction.java

来自「beginJsp2.0外文书籍源代码」· Java 代码 · 共 31 行

package com.wrox.publish.action;

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

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

/**
 * Struts Action invoked when the user wants to log out.
 */
public class LogoutAction extends Action {
    /** 
     * Invoked by the Struts controller.
     * @param mapping The ActionMapping invoking this Action.
     * @param form The ActionForm. Ignored.
     * @param request The HTTP request.
     * @param response The HTTP response.
     * @return the ActionForward item labelled "index".
     */    
    public ActionForward execute(ActionMapping mapping, 
                                 ActionForm form,
                                 HttpServletRequest request, 
                                 HttpServletResponse response) {
        request.getSession().invalidate();
        return mapping.findForward("index");
    }
}