I'm having trouble setting up my Spring MVC (not using Boot, because I started it before the Spring Initializr was discovered) using Thymeleaf to display messages from my resource package.
The main configuration class for the application:
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "b.c.m.h")
public class HrmConfiguration extends WebMvcConfigurerAdapter {
@Bean
public ViewResolver viewResolver() {
ServletContextTemplateResolver templateResolver = new ServletContextTemplateResolver();
templateResolver.setTemplateMode("HTML5");
templateResolver.setCharacterEncoding("UTF-8");
templateResolver.setPrefix("/WEB-INF/html/");
templateResolver.setSuffix(".html");
SpringTemplateEngine engine = new SpringTemplateEngine();
engine.addDialect(new SpringSecurityDialect());
engine.addDialect(new LayoutDialect(new GroupingStrategy()));
engine.setTemplateResolver(templateResolver);
ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
viewResolver.setTemplateEngine(engine);
viewResolver.setCache(false);
return viewResolver;
}
@Bean(name = "messageSource")
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("/i18n/messages");
messageSource.setFallbackToSystemLocale(false);
messageSource.setCacheSeconds(0);
messageSource.setDefaultEncoding("UTF-8");
return messageSource;
}
@Bean(name="localeResolver")
public LocaleResolver localeResolver(){
SessionLocaleResolver resolver = new SessionLocaleResolver();
resolver.setDefaultLocale(new Locale("pt", "BR"));
return resolver;
}
@Bean
public UrlTemplateResolver urlTemplateResolver() {
return new UrlTemplateResolver();
}
}
General view of the application:

And the messages_pt_BR.properties file:
spring.messages.basename=i18n/messages
app.name=APPLICATION NAME
But when I try to show APPLICATION NAMEsomewhere on the page, with this:
<p th:text="#{app.name}">app.name</p>
I only get
??app.name_pt_BR??
I looked at a number of possible solutions and guides, including:
I18n in Spring boot + Thymeleaf
http://www.concretepage.com/spring-4/spring-4-mvc-internationalization-i18n-and-localization-l10n-annotation-example
How to display messages in Thymeleaf and Spring Download?
However, I cannot get it to work.
en_US.
?