＜artifactId＞spring-boot-starter-web＜/artifactId＞

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

@Controller
public class MyController {

  @RequestMapping("/hello")
  public String handleRequest() {
    return "Hello, World!";
  }
}

@SpringBootApplication
public class Application {

  public static void main(String[] args) {
    SpringApplication.run(Application.class, args);
  }

}