Exemplo de uso do Thymeleaf com VRaptor

pom.xml

<dependency>
	<groupId>org.thymeleaf</groupId>
	<artifactId>thymeleaf</artifactId>
	<version>2.1.3.RELEASE</version>
</dependency>

ThymeleafComponent.java

@ApplicationScoped
public class ThymeleafComponent {
	
	private TemplateEngine templateEngine;
	private WebContext ctx;
	private HttpServletRequest request;
	private HttpServletResponse response;
	private ServletContext servletContext;
	private String template;
	private DefaultControllerTranslator defaultControllerTranslator;
	private MutableRequest mutableRequest;
	private ControllerMethod method;
	
	@Deprecated
	public ThymeleafComponent() {
	}
	
	@Inject
	public ThymeleafComponent(HttpServletRequest request, HttpServletResponse response, ServletContext servletContext, 
			DefaultControllerTranslator defaultControllerTranslator, MutableRequest mutableRequest) {
		this.request = request;
		this.response = response;
		this.servletContext = servletContext;
		this.defaultControllerTranslator = defaultControllerTranslator;
		this.mutableRequest = mutableRequest;
	}
	
	@PostConstruct
	public void init() {
		method = defaultControllerTranslator.translate(mutableRequest);
		template = defaultTemplate();
		
		createTemplateEngine();
		ctx = createWebContext();
	}

	private String defaultTemplate() {
		return method.getMethod().getName();
	}

	private void createTemplateEngine() {
		templateEngine = new TemplateEngine();
		ServletContextTemplateResolver templateResolver = createTemplateResolver();
        
        templateEngine.setTemplateResolver(templateResolver);
	}

	private ServletContextTemplateResolver createTemplateResolver() {
		ServletContextTemplateResolver templateResolver = new ServletContextTemplateResolver();
		templateResolver.setTemplateMode("XHTML");
        templateResolver.setPrefix("/WEB-INF/jsp/"+ controllerName() +"/");
        templateResolver.setCacheTTLMs(3600000L);
        templateResolver.setSuffix(".jsp");
		return templateResolver;
	}

	private WebContext createWebContext() {
		return new WebContext(request, response, servletContext, request.getLocale());
	}
	
	private String controllerName() {
		return StringUtils.lowercaseFirst(method.getController().getType().getSimpleName().replace("Controller", ""));
	}
	
	public void template(String templateName) {
		template = templateName;
	}
	
	public void process() {
		try {
			templateEngine.process(template, ctx, response.getWriter());
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public void include(String key, Object value) {
		ctx.setVariable(key, value);			
	}
}

ThymeleafResult.java

@RequestScoped
public class ThymeleafResult implements View {
	
	private ThymeleafComponent thymeleafComponent;
	private DefaultResult defaultResult;
	
	@Deprecated
	public ThymeleafResult() {
	}
	
	@Inject
	public ThymeleafResult(DefaultResult defaultResult, ThymeleafComponent thymeleafComponent) {
		this.defaultResult = defaultResult;
		this.thymeleafComponent = thymeleafComponent;
	}

	public ThymeleafResult withTemplate(String name) {
		thymeleafComponent.template(name);
		return this;
	}
	
	public View include(String key, Object value) {
		thymeleafComponent.include(key, value);
		return this;
	}

	public <T extends View> T use(Class<T> view) {
		return defaultResult.use(view);
	}
	
	@PreDestroy
	public void render() {
		thymeleafComponent.process();
	}

}

UserController.java

@Controller
public class UserController {
	@Inject private Result result;  

	public UserController() {
	}
		
	public void index() {
		result.use(ThymeleafResult.class).include("user", "Foo");
	}
	
}