localeaction.java

Jaoso新闻文章发布系统 0.9.1final 程序架构: Struts+Spring+Hibernate 主要功能： ·新闻采用在线编辑器,可以象使用word一样编辑新闻,可简繁

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Struts", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package jaoso.framework.web.action;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

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

import java.util.Locale;

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

/**
 * Implementation of <strong>Action </strong> that changes a locale based on
 * request level parameters that are set (language &amp; country).
 * 
 * @author David Wintefeldt
 */
public final class LocaleAction extends Action {
	/**
	 * Commons Logging instance.
	 */
	private Log log = LogFactory.getFactory().getInstance(
			this.getClass().getName());

	/**
	 * Process the specified HTTP request, and create the corresponding HTTP
	 * response (or forward to another web component that will create it).
	 * Return an <code>ActionForward</code> instance describing where and how
	 * control should be forwarded, or <code>null</code> if the response has
	 * already been completed.
	 * 
	 * @param mapping
	 *            The ActionMapping used to select this instance
	 * @param form
	 *            The optional ActionForm bean for this request (if any)
	 * @param request
	 *            The HTTP request we are processing
	 * @param response
	 *            The HTTP response we are creating
	 * 
	 * @return Action to forward to
	 * @exception Exception
	 *                if an input/output error or servlet exception occurs
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		// Extract attributes we will need
		HttpSession session = request.getSession();
		Locale locale = getLocale(request);

		String language = null;
		String country = null;

		try {
			language = request.getParameter("language");
			country = request.getParameter("country");
		} catch (Exception e) {
			log.error(e.getMessage(), e);
		}

		if (((language != null) && (language.length() > 0))
				&& ((country != null) && (country.length() > 0))) {
			locale = new java.util.Locale(language, country);
		} else if ((language != null) && (language.length() > 0)) {
			locale = new java.util.Locale(language, "");
		}

		session.setAttribute(Globals.LOCALE_KEY, locale);

		return mapping.findForward("success");
	}
}