Spirng I18n 国际化

最近公司做了个购票项目，业务扩展到了泰国，所以网站要支持泰语、英语和中文，因此有了下文。

配置文件准备：
根目录或者i18n目录放置需要的翻译，每个配置文件对应不同的翻译

messages是默认展示的翻译 我这里为英文
messages_th_TH:
email_format_error=รูปแบบอีเมลไม่ถูกต้อง
messages_en_US:
email_format_error=incorrect email format
messages_zh_CN:
email_format_error=邮箱格式错误

项目配置

## 配置消息资源
@Bean
public ResourceBundleMessageSource getBundleMessageSource(){
    ResourceBundleMessageSource r = new ResourceBundleMessageSource();
    r.setBasenames("messages");
    r.setDefaultEncoding("UTF-8");
    return r;
}


@Component
public class I18nComponent {

    private static final java.util.List<Locale> DEFAULT_ACCEPT_LOCALES = Arrays.asList(Locale.US, Locale.SIMPLIFIED_CHINESE, new Locale("th", "TH"));

    /**
     * 请求头信息，通过此解析locale
     * 前台lan 参数为：zh_CN,th_TH,en_US 和配置文件后缀对应
     */
    private static final String HTTP_ACCEPT_LANGUAGE = "lan";

    @Autowired
    private ResourceBundleMessageSource bundleMessageSource;

    public Locale getLocale() {
    // 从请求头获取语言参数
        ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();

        if (servletRequestAttributes == null) {
            return Locale.getDefault();
        }

        HttpServletRequest httpServletRequest = servletRequestAttributes.getRequest();
        String locale = httpServletRequest.getHeader(HTTP_ACCEPT_LANGUAGE);
        if (StringUtils.isEmpty(locale)) {
            return Locale.getDefault();
        }

        return Locale.lookup(Locale.LanguageRange.parse(locale), DEFAULT_ACCEPT_LOCALES);
    }

	// 获取翻译消息
    public String getLocaleMessage(Object errorEnum) {
        Locale locale = getLocale();
        String message = bundleMessageSource.getMessage(errorEnum.toString().toLowerCase(), null, locale);
        return message;
    }

    public String getLocaleMessage(String propertyKey) {
        Locale locale = getLocale();
        String message = bundleMessageSource.getMessage(propertyKey, null, locale);
        return message;
    }

    public String getLocaleMessageWithPlaceHolder(String propertyKey, Object... params) {
        Locale locale = getLocale();
        String message = bundleMessageSource.getMessage(propertyKey, params, locale);
        return message;
    }

}