gistfile1.txt

        // ... 
        registry.addInterceptor(new LocaleChangeInterceptor());
        // ... 

    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver sessionLocaleResolver = new SessionLocaleResolver();
        sessionLocaleResolver.setDefaultLocale(Locale.ENGLISH);
        return sessionLocaleResolver;
    }

    @Bean
    public MessageSource messageSource() {
        ResourceBundleMessageSource resourceBundleMessageSource = new ResourceBundleMessageSource();
        resourceBundleMessageSource.setBasename("messages");
        return resourceBundleMessageSource;
    }