public String getResource(String resourceKey,
    String defaultValue,
    Tag tag,
    PageContext pageContext) 
{
        // if resourceKey isn't defined either, use defaultValue
        String key = (resourceKey != null) ? resourceKey : defaultValue;
        String message = null;
        OgnlValueStack stack = TagUtils.getStack(pageContext);
        Iterator iterator = stack.getRoot().iterator();
        while (iterator.hasNext())
        {
            Object o = iterator.next();
            if (o instanceof TextProvider)
            {
                TextProvider tp = (TextProvider) o;
                message = tp.getText(key, null, null);
                break;
            }
        }
        // if user explicitely added a titleKey we guess this is an error
        if (message == null && resourceKey != null)
        {
            log.debug(Messages.getString("Localization.missingkey", resourceKey)); //$NON-NLS-1$
            message = UNDEFINED_KEY + resourceKey + UNDEFINED_KEY;
        }
        return message;
}

 public Locale resolveLocale(HttpServletRequest request) 
{
           
        Locale result = null;
        OgnlValueStack stack = ActionContext.getContext().getValueStack();
        Iterator iterator = stack.getRoot().iterator();
        while (iterator.hasNext())
        {
            Object o = iterator.next();
            if (o instanceof LocaleProvider)
            {
                LocaleProvider lp = (LocaleProvider) o;
                result = lp.getLocale();
                break;
            }
        }
        if (result == null)
        {
            log.debug("Missing LocalProvider actions, init locale to default");
            result = Locale.getDefault();
        }
        return result;
}