4.0.0 spring-boot-web-thymeleaf Spring Boot Web thymeleaf Sample Spring Boot Web thymeleaf Sample org.springframework.boot spring-boot-starter-parent 3.0.0 UTF-8 17 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-thymeleaf org.springframework.boot spring-boot-starter-validation org.springframework.boot spring-boot-starter-test org.junit.vintage junit-vintage-engine test org.hamcrest hamcrest-core org.springframework.boot spring-boot-maven-plugin