WebConfig.java

package org.springframework.issues.config;

import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.resourceresolver.SpringResourceResourceResolver;
import org.thymeleaf.spring4.view.ThymeleafViewResolver;
import org.thymeleaf.templateresolver.TemplateResolver;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@EnableWebMvc
@ComponentScan(basePackages="org.springframework.issues")
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {


	@Override
	public void addViewControllers(ViewControllerRegistry registry) {
		registry.addViewController("/").setViewName("index");
	}

	@Bean
	public TemplateResolver templateResolver() {
		TemplateResolver templateResolver = new TemplateResolver();
		templateResolver.setResourceResolver(thymeleafResourceResolver());
		templateResolver.setPrefix("/WEB-INF/views/");
		templateResolver.setSuffix(".html");
		templateResolver.setTemplateMode("HTML5");
		templateResolver.setCacheable(false);
		return templateResolver;
	}

	@Bean
	public SpringTemplateEngine templateEngine(TemplateResolver templateResolver) {
		SpringTemplateEngine engine = new SpringTemplateEngine();
		engine.setTemplateResolver(templateResolver);
		return engine;
	}

	@Bean
	public SpringResourceResourceResolver thymeleafResourceResolver() {
		return new SpringResourceResourceResolver();
	}

	@Bean
	public ThymeleafViewResolver thymeleafViewResolver(SpringTemplateEngine templateEngine) {
		ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
		viewResolver.setTemplateEngine(templateEngine);
		return viewResolver;
	}

	@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {
		// classpath configuration works
		//registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");

		// servlet 3 resource does not
		registry.addResourceHandler("/webjars/**").addResourceLocations("/webjars/");
	}
}