Kod źródłowy do wpisu Spring Boot Widoki - https://blog.mloza.pl/spring-boot-widoki

ComponentScan.java

@ComponentScan(basePackageClasses = {MainController.class, WebAppConfiguration.class})

JTwig.xml

        <dependency>
            <groupId>com.lyncode</groupId>
            <artifactId>jtwig-spring</artifactId>
            <version>2.1.7</version>
        </dependency>

Main.java

@EnableAutoConfiguration
@ComponentScan
public class Main {
    public static void main(String[] args) {
        SpringApplication.run(Main.class);
    }
}

MainController.java

@Controller
public class MainController {
    @RequestMapping("/")
    public ModelAndView index() {
        return new ModelAndView("index");
    }
}

MainController2.java

@Controller
public class MainController {
    @RequestMapping("/")
    public ModelAndView index() {
        ModelAndView modelAndView = new ModelAndView("index");
        
        modelAndView.addObject("greetings", "Hello world from variable!");
        modelAndView.addObject("greetingsArray", new String[] {"Hello", "World", "!"});
        
        return modelAndView;
    }
}

pom.xml

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.0.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

view.html

<h1>Hello World from view!</h1>

view2.twig

<h3>{{ greetings }}</h3>

view3.twig

<ul>
    {% for i in greetingsArray %}
        <li>{{ i }}</li>
    {% endfor %}
</ul>

view4.twig

<ul>
    {% for i in greetingsArray %}
        <li>{{ loop.index+1}}. {{ i }}</li>
    {% endfor %}
</ul>

WebAppConfiguration.java

@Configuration
public class WebAppConfiguration {
    @Bean
    public ViewResolver viewResolver() {
        JtwigViewResolver jtwigViewResolver = new JtwigViewResolver();
        jtwigViewResolver.setPrefix("classpath:views/");
        jtwigViewResolver.setSuffix(".twig");
        return jtwigViewResolver;
    }
}