public String getResource(String resourceKey,
    String defaultValue,
    Tag tag,
    PageContext pageContext) 
{
        // if titleKey isn't defined either, use property
        String key = (resourceKey != null) ? resourceKey : defaultValue;
        // retrieve MessageResources. Don't use TagUtils to mantain Struts 1.1 compatibility
        MessageResources resources = (MessageResources) pageContext.getAttribute(
            Globals.MESSAGES_KEY,
            PageContext.REQUEST_SCOPE);
        if (resources == null)
        {
            ModuleConfig moduleConfig = (ModuleConfig) pageContext.getRequest().getAttribute(Globals.MODULE_KEY);
            if (moduleConfig == null)
            {
                moduleConfig = (ModuleConfig) pageContext.getServletContext().getAttribute(Globals.MODULE_KEY);
                pageContext.getRequest().setAttribute(Globals.MODULE_KEY, moduleConfig);
            }
            resources = (MessageResources) pageContext.getAttribute(
                Globals.MESSAGES_KEY + moduleConfig.getPrefix(),
                PageContext.APPLICATION_SCOPE);
        }
        if (resources == null)
        {
            resources = (MessageResources) pageContext
                .getAttribute(Globals.MESSAGES_KEY, PageContext.APPLICATION_SCOPE);
        }
        String title = null;
        if (resources != null)
        {
            Locale userLocale = resolveLocale((HttpServletRequest) pageContext.getRequest());
            title = resources.getMessage(userLocale, key);
        }
        // if user explicitely added a titleKey we guess this is an error
        if (title == null && resourceKey != null)
        {
            title = UNDEFINED_KEY + resourceKey + UNDEFINED_KEY;
        }
        return title;
}

 public Locale resolveLocale(HttpServletRequest request) 
{
 //$NON-NLS-1$
        Locale userLocale = null;
        HttpSession session = request.getSession(false);
        // Only check session if sessions are enabled
        if (session != null)
        {
            userLocale = (Locale) session.getAttribute(Globals.LOCALE_KEY);
        }
        if (userLocale == null)
        {
            // Returns Locale based on Accept-Language header or the server default
            userLocale = request.getLocale();
        }
        return userLocale;
}