ReloadableResourceBundleMessageSource not working

Currently im working on a new Spring 4 + Thymeleaf + Security project without XML bean files. Somehow the localization property files are not loading and i cant find anything about them in the log files.

/**
 * Generates the i18n language loader.
 *
 * @return
 */
@Bean(name="messageSource")
public ReloadableResourceBundleMessageSource messageSource() {
    ReloadableResourceBundleMessageSource resource = new ReloadableResourceBundleMessageSource();
    resource.setBasename("classpath:messages");
    resource.setDefaultEncoding("UTF-8");
    resource.setUseCodeAsDefaultMessage(true);
    resource.setFallbackToSystemLocale(false);
    return resource;
}

/**
 * Generates the i18n language changer parameter.
 *
 * @return
 */
@Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
    LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
    localeChangeInterceptor.setParamName("language");
    return localeChangeInterceptor;
}

/**
 * Genereates the default i18n language.
 *
 * @return
 */
@Bean(name = "localeResolver")
public SessionLocaleResolver localeResolver() {
    SessionLocaleResolver localeResolver = new SessionLocaleResolver();
    localeResolver.setDefaultLocale(new Locale("en"));
    return localeResolver;
}

/**
 * Generates the template resolver for thymeleaf.
 *
 * @return
 */
@Bean
public ServletContextTemplateResolver templateResolver() {
    ServletContextTemplateResolver resolver = new ServletContextTemplateResolver();
    resolver.setPrefix("/WEB-INF/views/");
    resolver.setSuffix(".html");
    resolver.setTemplateMode("HTML5");
    resolver.setCacheable(false);
    return resolver;

}

/**
 * Generates the template engine for thymeleaf.
 *
 * @return
 */
public SpringTemplateEngine templateEngine() {
    SpringTemplateEngine engine = new SpringTemplateEngine();
    engine.setTemplateResolver(templateResolver());
    engine.addDialect(new SpringSecurityDialect());
    return engine;
}

/**
 * Generates the view resolver from Spring MVC with thymeleaf intergrated.
 *
 * @return
 */
@Bean
public ViewResolver viewResolver() {
    ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
    viewResolver.setTemplateEngine(templateEngine());
    viewResolver.setOrder(1);
    viewResolver.setViewNames(new String[]{"*"});
    viewResolver.setCache(false);
    return viewResolver;
}

/**
 * Add resources.
 *
 * @param registry
 */
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/assets/**").addResourceLocations("/WEB-INF/assets/");
}

/**
 * Add interceptors.
 * 
 * @param registry 
 */
@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(localeChangeInterceptor());
}

File names in the src/main/resources/ folder:

• messages.properties


• messages_en.properties


• messages_nl.properties

Is there anyone who can help me out?