Using Layout of Thymeleaf in Spring MVC

https://github.com/kimjonghoon/spring-thymeleaf

How to run

Go to the root directory, and run the following at a command prompt:
mvn jetty:run
You can test only the highlighted links.

Origin: Spring MVC 5 - Hello world example with Thymeleaf template

Add dependency

<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring6 -->
<dependency>
  <groupId>org.thymeleaf</groupId>
  <artifactId>thymeleaf-spring6</artifactId>
  <version>3.1.3.RELEASE</version>
</dependency>

Spring MVC Configuration

package net.java_school.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.thymeleaf.spring6.SpringTemplateEngine;
import org.thymeleaf.spring6.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.spring6.view.ThymeleafViewResolver;
import org.thymeleaf.templatemode.TemplateMode;

@Configuration
@EnableWebMvc
@ComponentScan("net.java_school.blog")
public class AppConfig implements WebMvcConfigurer {

  @Autowired
  private ApplicationContext applicationContext;

  /*
  Controller for static resources
  */
  @Override
  public void addResourceHandlers(final ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/static/**").addResourceLocations("/static/");
  }

  /*
  i18n
  */
  @Bean
  public ResourceBundleMessageSource messageSource() {
    ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
    messageSource.setBasename("messages");
    messageSource.setDefaultEncoding("UTF-8");//If the encoding of the Java property file is UTF-8
    return messageSource;
  }


  /*
   * STEP 1 - Create SpringResourceTemplateResolver
  */
  @Bean
  public SpringResourceTemplateResolver templateResolver() {
    SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
    templateResolver.setApplicationContext(applicationContext);
    templateResolver.setPrefix("/WEB-INF/views/");
    templateResolver.setSuffix(".html");
    templateResolver.setCacheable(false);//Development Mode
    return templateResolver;
  }

  /*
   * STEP 2 - Create SpringTemplateEngine
  */
  @Bean
  public SpringTemplateEngine templateEngine() {
    SpringTemplateEngine templateEngine = new SpringTemplateEngine();
    templateEngine.setTemplateResolver(templateResolver());
    templateEngine.setEnableSpringELCompiler(true);
    return templateEngine;
  }

  /*
   * STEP 3 - Create ThymeleafViewResolver
  */
  @Bean
  public ThymeleafViewResolver viewResolver() {
    ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
    viewResolver.setTemplateEngine(templateEngine());
    viewResolver.setCharacterEncoding("UTF-8");
    return viewResolver;
  }
}

package net.java_school.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class MyWebApplicationInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

  @Override
  protected Class<?>[] getRootConfigClasses() {
    return null;
  }

  @Override
  protected Class<?>[] getServletConfigClasses() {
    return new Class[] { AppConfig.class };
  }

  @Override
  protected String[] getServletMappings() {
    return new String[] { "/" };
  }
}

• https://www.thymeleaf.org/doc/tutorials/3.1/thymeleafspring.html
• Spring MVC 5 - Hello world example with Thymeleaf template