java配置文件

配置攔截器及語言環境解析

@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Bean
    public LocaleResolver localeResolver() {
        //設置cookie模式處理國際化
        CookieLocaleResolver cookieLocaleResolver = new CookieLocaleResolver();
        cookieLocaleResolver.setDefaultLocale(Locale.CHINESE);
        return cookieLocaleResolver;
    }
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //指定國際化標識
        LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
        localeChangeInterceptor.setParamName("lang");
        registry.addInterceptor(localeChangeInterceptor);
    }
}

配置國際化數據源

// 1.需指定名稱替換默認bean
@Component("messageSource")
public class DBMessageSource extends AbstractMessageSource {
    // 自定義service
    @Autowired
    private LanguageRepository languageRepository;
    // 2.國際化處理方法依據key在數據庫中查找對應國際化內容
    @Override
    protected MessageFormat resolveCode(String key, Locale locale) {
        LanguageEntity message = languageRepository.findByKeyAndLocale(key,locale.getLanguage());
        if (message == null) {
            message = languageRepository.findByKeyAndLocale(key,Locale.getDefault().getLanguage());
        }
        return new MessageFormat(message.getContent(), locale);
    }
    //3.新增方法，用於後端傳參國際化
    public final String getMessage(String code, @Nullable Object[] args) throws NoSuchMessageException {
        Locale locale = LocaleContextHolder.getLocale();
        String msg = getMessageInternal(code, args, locale);
        if (msg != null) {
            return msg;
        }
        String fallback = getDefaultMessage(code);
        if (fallback != null) {
            return fallback;
        }
        throw new NoSuchMessageException(code, locale);
    }
}

其中3為自己新增的方法用於java代碼中獲取國際化，使用時在java代碼中注入messageSource。

頁面

<h2 th:text="#{home.welcome('xxx')}"></h2>
<p th:text="#{home.info}"></p>
<p th:text="#{home.changelanguage}"></p>
<ul>
    <li><a href="?lang=en" th:text="#{home.lang.en}"></a></li>
    <li><a href="?lang=de" th:text="#{home.lang.de}"></a></li>
    <li><a href="?lang=zh" th:text="#{home.lang.zh}"></a></li>
</ul>