src/org/nutz/mvc/MvcI18n.java
public static String messageOrDefault(String key, String defaultValue) {
        String localizationKey = Mvcs.getLocalizationKey() == null ? Mvcs.getDefaultLocalizationKey() : Mvcs.getLocalizationKey();
        Map<String, Object> localization = Mvcs.getLocaleMessage(localizationKey);
        if (null != localization) {
            Object value = localization.get(key);
            return value == null ? defaultValue : String.valueOf(value);
        }
        return defaultValue;
    }
public static String messageOrDefault(String key, String defaultValue) {
        String localizationKey = Mvcs.getLocalizationKey() == null ? Mvcs.getDefaultLocalizationKey() : Mvcs.getLocalizationKey();
        Map<String, Object> localization = Mvcs.getLocaleMessage(localizationKey);
        if (null != localization) {
            Object value = localization.get(key);
            return value == null ? defaultValue : String.valueOf(value);
        }
        return defaultValue;
    }
取得国际化信息

@param key
@return