Spring Boot Enable Live Reload For Thymeleaf Templates

1. Add dev tools dependency

Gradle:

Add the following lines to your build.gradle file

dependencies {

    implementation 'org.springframework.boot:spring-boot-devtools'

}

Maven:

Add the following lines to your pom.xml file

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>
</dependencies>

2. Add the following properties in application.properties

spring.thymeleaf.cache=false
spring.thymeleaf.enabled=true
spring.thymeleaf.templates_root=src/main/resources/templates/
spring.devtools.livereload.enabled=true
spring.devtools.restart.enabled=true

3. Add the following lines in your main class

    @Autowired
    private ThymeleafProperties properties;

    @Value("${spring.thymeleaf.templates_root:}")
    private String templatesRoot;

    @Bean
    public ITemplateResolver defaultTemplateResolver() {
        FileTemplateResolver resolver = new FileTemplateResolver();
        resolver.setSuffix(properties.getSuffix());
        resolver.setPrefix(templatesRoot);
        resolver.setTemplateMode(properties.getMode());
        resolver.setCacheable(properties.isCache());
        resolver.setCharacterEncoding("UTF-8");
        return resolver;
    }

Example:

@SpringBootApplication
public class YouMainClassName {

    public static void main(String[] args) {
      // TODO Auto-generated method stub
    }

    @Autowired
    private ThymeleafProperties properties;

    @Value("${spring.thymeleaf.templates_root:}")
    private String templatesRoot;

    @Bean
    public ITemplateResolver defaultTemplateResolver() {
        FileTemplateResolver resolver = new FileTemplateResolver();
        resolver.setSuffix(properties.getSuffix());
        resolver.setPrefix(templatesRoot);
        resolver.setTemplateMode(properties.getMode());
        resolver.setCacheable(properties.isCache());
        resolver.setCharacterEncoding("UTF-8");
        return resolver;
    }

}

4. Enable the following settings in IntelliJ IDEA

4.1 Build project automatically

Go to File -> Settings -> Build, Execution, Deployment -> Compiler -> Build project automatically

4.2 Allow auto-make to start

Go to File -> Settings -> Advanced Settings -> Allow auto-make to start even if developed application is currently running

5. Run the application