signouthandler.java

来自「《Java网络程序设计.rar》包括三个网络程序的源代码。」· Java 代码 · 共 59 行

/*
 */

package org.impact.stars.control.web.handlers;

import java.util.HashMap;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Locale;
import javax.servlet.http.HttpSession;
import javax.ejb.RemoveException;

import org.impact.stars.control.event.StarsEvent;
import org.impact.stars.control.exceptions.StarsEventException;
import org.impact.stars.control.event.SignoutEvent;
import javax.servlet.http.HttpServletRequest;
import org.impact.stars.util.Debug;
import org.impact.stars.control.web.ModelManager;
import org.impact.stars.util.WebKeys;
import org.impact.stars.util.JSPUtil;


/**
 * SignoutHandler
 * This class removes the UserControllerEJB and destroys
 * the current HttpSession.
 *
*/
public class SignoutHandler extends RequestHandlerSupport {

    public StarsEvent processRequest(HttpServletRequest request) throws StarsEventException{
        Debug.println("Creating Signout Event");
        return new SignoutEvent();
    }

    public void doEnd(HttpServletRequest request) {
        ModelManager mm = (ModelManager)request.getSession().getAttribute(WebKeys.ModelManagerKey);
        Debug.println("Signout doEnd");
        // get locale so the log off message can be in the correct language
        String language = mm.getProfileMgrModel().getExplicitInformation().getLangPref();
        Locale locale = JSPUtil.getLocaleFromLanguage(language);
        try {
        //remove the UserControllerEJB
         mm.getURCEJB().remove();
        } catch (RemoveException rem) {
            Debug.println("SignoutHandler error removing UserController: " + rem);
        }
        request.getSession().invalidate();
        // get new session and put in a new gui controller
        HttpSession validSession = request.getSession(true);
        // put the previous language in the session so the proper signout message is displayed
        request.getSession().setAttribute(WebKeys.LanguageKey, locale);
        mm = new ModelManager();
        request.getSession().setAttribute(WebKeys.ModelManagerKey, mm);
        mm.init(context, validSession);
        request.getSession().setAttribute(WebKeys.ModelManagerKey, mm);
    }
}