Компонент Thymeleaf Template Engine Bean игнорируется

У меня есть приложение Spring, но моя конфигурация для Thymeleaf полностью игнорируется. Что я делаю не так? Мне нужен Thymeleaf для обработки внешних файлов Javascript, но без работающей конфигурации я не могу добавить преобразователь шаблонов Javascript.

Я знаю, что это не работает, потому что Thymeleaf говорит мне, что режим HTML5 устарел, но, как вы можете видеть, я установил режим HTML.

package de.xy;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
@EntityScan("de.xy.model")
public class Application extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }
}

Конфигурация

package de.xy.config;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.extras.springsecurity4.dialect.SpringSecurityDialect;
import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.spring4.view.ThymeleafViewResolver;
import org.thymeleaf.templatemode.TemplateMode;
import org.thymeleaf.templateresolver.ITemplateResolver;

@Configuration
@EnableWebMvc
@ComponentScan("de.xy")
public class ThymeleafConfig extends WebMvcConfigurerAdapter implements ApplicationContextAware {

    private ApplicationContext applicationContext;

    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }

    @Bean
    public ViewResolver viewResolver() {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine());
        resolver.setCharacterEncoding("UTF-8");
        return resolver;
    }

    @Bean
    public TemplateEngine templateEngine() {
        SpringTemplateEngine engine = new SpringTemplateEngine();
        engine.setEnableSpringELCompiler(true);
        engine.setTemplateResolver(templateResolver());
        engine.addDialect(new SpringSecurityDialect());
        return engine;
    }

    private ITemplateResolver templateResolver() {
        SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
        resolver.setApplicationContext(applicationContext);
        resolver.setPrefix("/WEB-INF/templates/");
        resolver.setTemplateMode(TemplateMode.HTML);
        return resolver;
    }
}

РЕДАКТИРОВАТЬ:
Рабочая конфигурация:

@Configuration
public class ThymeleafConfig extends WebMvcConfigurerAdapter implements ApplicationContextAware {

    private static final String UTF8    = "UTF-8";

    private ApplicationContext  applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }

    @Bean
    public ViewResolver htmlViewResolver() {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine(htmlTemplateResolver()));
        resolver.setContentType("text/html");
        resolver.setCharacterEncoding(UTF8);
        resolver.setViewNames(new String[] { "*.html" });
        return resolver;
    }

    @Bean
    public ViewResolver cssViewResolver() {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine(cssTemplateResolver()));
        resolver.setContentType("text/css");
        resolver.setCharacterEncoding(UTF8);
        resolver.setViewNames(new String[] { "*.css" });
        return resolver;
    }

    @Bean
    public ViewResolver javascriptViewResolver() {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine(javascriptTemplateResolver()));
        resolver.setContentType("application/javascript");
        resolver.setCharacterEncoding(UTF8);
        resolver.setViewNames(new String[] { "*.js" });
        return resolver;
    }

    private TemplateEngine templateEngine(ITemplateResolver templateResolver) {
        SpringTemplateEngine engine = new SpringTemplateEngine();
        engine.setTemplateResolver(templateResolver);
        return engine;
    }

    private ITemplateResolver htmlTemplateResolver() {
        SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
        resolver.setApplicationContext(applicationContext);
        resolver.setPrefix("/WEB-INF/templates/");
        resolver.setTemplateMode(TemplateMode.HTML);
        return resolver;
    }

    private ITemplateResolver cssTemplateResolver() {
        SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
        resolver.setApplicationContext(applicationContext);
        resolver.setPrefix("/WEB-INF/css/");
        resolver.setTemplateMode(TemplateMode.CSS);
        return resolver;
    }

    private ITemplateResolver javascriptTemplateResolver() {
        SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
        resolver.setApplicationContext(applicationContext);
        resolver.setPrefix("/WEB-INF/js/");
        resolver.setTemplateMode(TemplateMode.JAVASCRIPT);
        return resolver;
    }
}

JavascriptКонтроллер:

@Controller
@RequestMapping("js")
public class JavascriptController {

    @RequestMapping("somejavascriptfile.js")
    public String getJS() {
        return "somejavascriptfile.js";
    }}

Это больше, чем мне нужно, но это работает (Контроллер ничего не делает)