logoffaction.java

利用Mysql数据库、struts框架实现的web系统开发

package com.control.system.user;

import java.io.IOException;
//import java.util.*;
import javax.servlet.http.*;
import javax.servlet.*;
import com.control.system.user.Constants;
import org.apache.struts.action.*;
//import org.apache.struts.util.MessageResources;

import com.bean.system.user.UserForm;

public final class LogoffAction extends Action {
    public ActionForward perform(ActionMapping mapping,ActionForm form,
            HttpServletRequest request,HttpServletResponse response)
          throws IOException,ServletException {
       //Extract attributes we will need
       HttpSession session = request.getSession();
       UserForm user=(UserForm) session.getAttribute(Constants.USER_KEY);
       //Remove user login
       session.removeAttribute(Constants.USER_KEY);
       //Return success
       return mapping.findForward(Constants.SUCCESS);
    }
}