logoutaction.java

来自「This src code does or handles the login 」· Java 代码 · 共 53 行

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package com.wwr.login;

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

import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;

/**
 *
 * @author user
 */
public class LogoutAction extends org.apache.struts.action.Action {
    
    /* forward name="success" path="" */
    private final static String SUCCESS = "success";
    
    /**
     * This is the action called from the Struts framework.
     * @param mapping The ActionMapping used to select this instance.
     * @param form The optional ActionForm bean for this request.
     * @param request The HTTP Request we are processing.
     * @param response The HTTP Response we are processing.
     * @throws java.lang.Exception
     * @return
     */
    public ActionForward execute(ActionMapping mapping, ActionForm  form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try{
            HttpSession session = request.getSession();
            String uName = (String) session.getAttribute("Username");
            System.out.println("User name in session ::: "+uName);
            if(uName != null || uName != ""){
                session.removeAttribute("Username");
                session.invalidate();
            }
            
        }catch(Exception e){
            e.printStackTrace();
        }
        return mapping.findForward(SUCCESS);
        
    }
}