languageaction.java

sample struct article, ... ...

/**
 * Copyright (C) 2003-2006 TiandiNet.com
 * 
 * Struts 文章系统 1.1
 * 
 * release-date: 2006-02-25
 */

package com.tiandinet.StrutsArticle.Actions;

import java.io.IOException;
import java.util.Locale;
import javax.servlet.http.*;
import org.apache.struts.action.*;

/**
 * @author Meng Yang
 * @version 1.1
 */
public class LanguageAction extends Action {
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) 
			throws IOException {
		// Use Dyna Form
		DynaActionForm f = (DynaActionForm) form;

		// Get the parameter from Form
		String action = (String) f.get("action");
		String language = (String) f.get("language");
		String currentURI = (String) f.get("currentURI");
		String currentQueryString = (String) f.get("currentQueryString");

		HttpSession session = request.getSession(true);
		String currentLanguage = (String) session
				.getAttribute("currentLanguage");
		if (action.equals("change") || currentLanguage == null
				|| currentLanguage.equals("")) {
			session.setAttribute("currentLanguage", language);
		}

		Locale l = new Locale((String) session.getAttribute("currentLanguage"));
		super.setLocale(request, l);
		
		//super.getLocale()

		if (action.equals("change")) {
			if (currentURI == null || currentURI.equals(""))
			{
				return mapping.findForward("go");
			}
			else
			{
				String redirectURL = currentURI;
				if (currentQueryString != null && !currentQueryString.equals(""))
				{
					redirectURL += "?" + currentQueryString;
				}
				
				response.sendRedirect(redirectURL);
				
				return null;
			}
		}
		else {
			return null;
		}
	}
}