实战程序化处理Struts1针对zh_HANS_CN国际化问题

				
String currentLocale = request.getLocale().toString(); //浏览器默认的语言
            request.getSession().
			setAttribute(Globals.LOCALE_KEY, currentLocale);//将语言这种到环境中
//然后用ResourceBundle获取相关的资源文件
ResourceBundle resourceBundle = ResourceBundle.
			getBundle("ApplicationResources",currentLocale);

				
Locale currentLocale = request.getLocale().toString();//获取本地语言
session.setAttribute("WW_TRANS_I18N_LOCALE", LocalizedTextUtil.localeFromString(currentLocale, null));//将语言这种到环境中
//然后用ResourceBundle获取相关的资源文件
ResourceBundle resourceBundle = ResourceBundle.
			getBundle("ApplicationResources",currentLocale);

	
<filter>
		<filter-name>localeFilter</filter-name>
		<filter-class>xx.xx.xx. LocaleFilter</filter-class>
	</filter>
<filter-mapping>
		<filter-name>localeFilter</filter-name>
		<url-pattern>/*</url-pattern>
		<dispatcher>REQUEST</dispatcher>
		<dispatcher>FORWARD</dispatcher>
	</filter-mapping>

	
<message-resources parameter="ApplicationResources"/>

	
<span class="rk_qh">
		   <a class="rk_qhuan" onclick="clickLan();"><span style="margin:0 2px;">${lan}</span>
					<img id="lan_img" style="position:relative;"src="/images/header/arrow_down.gif"/>
		    </a>
		         <ul id="ul_lans" class="chinese_english_huan" onmouseover="clickLan();" onmouseout="hideLan();">
		      	       <li><a href="javascript:languages(\‘zh_CN\‘)">中文(简体)</a></li>
		      	       <li class="rk_topborder_n"><a href="javascript:languages(\‘en_US\‘)">English</a></li>	      	</ul>
		</span>

	
function languages(lan){
		var cookiesPath = "/";//路径
		var cookiesDomain = ".xxx.com";//设置有效的url
		document.cookie = "xxx_language="+lan+";path="+cookiesPath+";domain="+cookiesDomain;
//将有关信息写到cookie中
		location.reload();//刷新本页面进行国际化切换
	}

	
package com.ruanko.webapp.filter;

import org.apache.struts.Globals;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.servlet.http.Cookie;
public class LocaleFilter extends OncePerRequestFilter {

	public static final String CHINESELANGUAGE = "中文(简体)";
	public static final String ENGLISHLANGUAGE = "English";
	
    @SuppressWarnings("unchecked")
	public void doFilterInternal(HttpServletRequest request, HttpServletResponse response, 
                                 FilterChain chain)
            throws IOException, ServletException {
		
		/*过滤器实现思路： 
		（1）判断cookies中是否有值，有值就将cookies中的值得到一个Locale
		（2）cookies没值就根据浏览器默认的语言来显示*/
    	
    	Locale currentLocale = null; //定义语言地区信息 
		String language = null;//客户端页面写的语言cookies
		Cookie[] cookies = request.getCookies();
		if (cookies != null) {
			for(Cookie cookie : cookies){ 
	        	if(cookie.getName().equals("xxx_language")){
	        		language=cookie.getValue();//判断和设置cookies里面是否有值。
	        	}
	        } 
		}
		try {
			
			/**
			 * 1.如果cookies中是有值的（前提条件是从页面传过来的语言为空才进下面的逻辑）
			 */
			 if(language != null){
				if ("zh_CN".equals(language)) {//如果cookies中的语言为中文
					currentLocale = new Locale("zh", "CN");
					language = "zh_CN";
				    request.getSession().setAttribute("lan", CHINESELANGUAGE);
				} else if ("en_US".equals(language)) {//如果cookies中的语言为英文
					currentLocale = new Locale("en", "US"); 
					language = "en_US";
				    request.getSession().setAttribute("lan", ENGLISHLANGUAGE);
				} else {
					currentLocale = new Locale("zh", "CN");
					language = "zh_CN";
				    request.getSession().setAttribute("lan", CHINESELANGUAGE);
				}
			}
			/**
			 * 传过来的语言：如果既没有传过来的语言和cookies里面的值就根据浏览器默认的语言来显示
			 */
			else {
				String defaultLanguage = request.getLocale().toString(); //浏览器默认的语言
				if(defaultLanguage.equals("en_US")){
				    currentLocale = new Locale("en", "CN");
				    request.getSession().setAttribute("lan", ENGLISHLANGUAGE);
				}else{
					currentLocale = new Locale("zh", "CN");
				    request.getSession().setAttribute("lan", CHINESELANGUAGE);
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			///最后将设置好的环境类放到session中去
			request.getSession().removeAttribute(Globals.LOCALE_KEY);
			request.getSession().setAttribute(Globals.LOCALE_KEY, currentLocale);
			}
        
        chain.doFilter(request, response);
    }
}

	
Locale locale =  (Locale) request.getSession().getAttribute(Globals.LOCALE_KEY);
		ResourceBundle resourceBundle = ResourceBundle.getBundle("ApplicationResources",locale);
		String course = resourceBundle.getString("COE_COURSE");

2,实战总结

由于项目国际化主体还是通过jstl方案来获取相应资源文件的设置，但是同时用到了struts1的一些taglibs,同时对于一些插件中用到了server端的缺省locale.解决思路：

1〉针对jstl的设置，通过一个servletFilter 来实现locale的转换。

public class LocaleServletFilter implements Filter  {

    @Override
    public void destroy() {
        // TODO Auto-generated method stub
        
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {         
          Locale sesionLocale=request.getLocale();
          String locStr=sesionLocale.toString();
          Locale proLoc = locFromString(locStr);
          LocaleSetId.setLocale(proLoc);
          request.setAttribute("javax.servlet.jsp.jstl.fmt.fallbackLocale", proLoc.toString());
          request.setAttribute("javax.servlet.jsp.jstl.fmt.locale", proLoc.toString());      
          HttpServletRequest hprequest = (HttpServletRequest)request;
          HttpServletResponse hpresponse = (HttpServletResponse)response;
          hprequest.setCharacterEncoding("UTF-8");
          HttpSession session = hprequest.getSession();     
          Config.set(session, Config.FMT_LOCALE, proLoc);
          session.removeAttribute(Globals.LOCALE_KEY);
          session.setAttribute(Globals.LOCALE_KEY, proLoc);

          chain.doFilter(hprequest, hpresponse);        
    }

    
    public Locale locFromString(String locale) {
        String parts[] = locale.split("_");
        if (parts.length == 1) return new Locale(parts[0]);
        else if (parts.length == 2)
        {
          if(parts[1].equalsIgnoreCase("HANS")){
                 
            return new Locale(parts[0], "CN");
          }
          else{
                  
            return new Locale(parts[0], parts[1]);
          }
        }
        else if (parts.length == 3 && parts[1].equalsIgnoreCase("HANS"))
        {
            return new Locale(parts[0], parts[2]);
        }
        else return new Locale(parts[0], parts[1], parts[2]);
    }
}
2〉针对struts1,taglib的locale 设置
 /** i18n the title */
    public String getTitle() {
        if (isLocalizedTitle) {
            Locale userLocale =
               RequestUtils.getUserLocale(
                    (HttpServletRequest) pageContext.getRequest(), null);
            HttpServletRequest req = (HttpServletRequest) pageContext.getRequest();
            Locale LocaleProcessed= locFromString(req.getLocale().toString());           
            req.getSession().setAttribute(Globals.LOCALE_KEY, LocaleProcessed);
            pageContext.setAttribute(Globals.LOCALE_KEY, LocaleProcessed);
            try {
                String title=TagUtils.getInstance().message(pageContext, null,
                        Globals.LOCALE_KEY,
                        super.getTitle());
                return title;
            } catch (JspException e) {
                log.debug(e);
                // Do not localize then
            }
        }
        return super.getTitle();
    }

3〉针对插件或服务端代码中用到缺省的locale的问题。

这个在前面servletfilter里面我设置了一个全局变量，在server端如果需要用locale调用如下方法得到。
 LocaleSetId.getLocale();