# Spring REST Controllers (Spring Boot) > @RestController, @GetMapping, @PostMapping, @PutMapping, @DeleteMapping, ResponseEntity를 사용하는 REST API - 20 면접 질문 - Mid-Level - [면접 질문: Spring Boot](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions.md) ## 1. @RestController와 @Controller의 주요 차이점은 무엇입니까? **답변** @RestController는 @Controller와 @ResponseBody를 결합한 복합 어노테이션입니다. 즉, @RestController의 모든 메서드는 뷰를 해석하는 대신 직렬화된 데이터(JSON/XML)를 자동으로 반환합니다. @RestController는 REST API를 만드는 데 이상적이며, @Controller는 HTML 뷰를 사용하는 전통적인 웹 애플리케이션에 사용됩니다. ## 2. REST 메서드에서 @RequestBody 어노테이션의 역할은 무엇입니까? **답변** @RequestBody는 HTTP 요청 본문(보통 JSON 또는 XML)을 Java 객체로 역직렬화하도록 Spring에 지시합니다. Spring은 HttpMessageConverter(JSON의 경우 Jackson 등)를 사용하여 이 변환을 자동으로 수행합니다. 이는 POST나 PUT 요청에서 복잡한 데이터를 받는 데 필수적입니다. ## 3. HTTP DELETE 요청을 매핑하려면 어떤 어노테이션을 사용해야 합니까? **답변** @DeleteMapping은 HTTP DELETE 요청을 간결하게 매핑하기 위해 Spring 4.3에서 도입된 전용 어노테이션입니다. @RequestMapping(method = RequestMethod.DELETE)의 단축 표현입니다. Spring은 각 HTTP 메서드에 대해 유사한 어노테이션을 제공합니다: @GetMapping, @PostMapping, @PutMapping, @PatchMapping. ## 17개 추가 질문 이용 가능 - Spring REST에서 URL의 경로 변수를 어떻게 추출합니까? - 객체를 직접 반환하는 대신 ResponseEntity를 사용하는 이점은 무엇입니까? 무료로 가입하기: https://sharpskill.dev/ko/login ## 기타 Spring Boot 면접 주제 - [Spring Core - IoC & DI](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-core-ioc-di.md): 22개 질문, Junior - [Spring Boot Auto-Configuration](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-boot-auto-configuration.md): 20개 질문, Junior - [Spring Boot Starters](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-boot-starters.md): 18개 질문, Junior - [Application Properties & YAML](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/application-properties-yml.md): 16개 질문, Junior - [SLF4J 및 Logback을 사용한 로깅](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/logging.md): 20개 질문, Junior - [Spring Boot DevTools](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-boot-devtools.md): 15개 질문, Junior - [Spring MVC Basics](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-mvc-basics.md): 20개 질문, Mid-Level - [Request & Response Handling](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/request-response-handling.md): 20개 질문, Mid-Level - [예외 처리](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/exception-handling.md): 25개 질문, Mid-Level - [Bean Validation](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/bean-validation.md): 25개 질문, Mid-Level - [Spring Data JPA 기초](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-data-jpa-basics.md): 25개 질문, Mid-Level - [JPA 엔티티 및 관계](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/jpa-entities-relationships.md): 30개 질문, Mid-Level - [JPA 쿼리](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/jpa-queries.md): 30개 질문, Mid-Level - [Spring Data Repositories](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-data-repositories.md): 25개 질문, Mid-Level - [Spring Security 기초](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-security-basics.md): 25개 질문, Mid-Level - [Spring Boot Actuator](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-boot-actuator.md): 20개 질문, Mid-Level - [JUnit과 Mockito를 사용한 단위 테스트](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/testing-junit-mockito.md): 30개 질문, Mid-Level - [Spring Boot 테스트](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-boot-testing.md): 30개 질문, Mid-Level - [Profiles와 Environment](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/profiles-environment.md): 20개 질문, Mid-Level - [RestTemplate 및 WebClient](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/resttemplate-webclient.md): 24개 질문, Mid-Level - [Async와 스케줄링](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/async-scheduling.md): 25개 질문, Mid-Level - [Spring을 사용한 캐싱](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/caching.md): 25개 질문, Mid-Level - [Spring WebFlux (리액티브)](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-webflux.md): 25개 질문, Mid-Level - [Spring 트랜잭션](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/transactions.md): 30개 질문, Senior - [고급 인증 및 인가](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/authentication-authorization.md): 30개 질문, Senior - [JWT 및 스테이트리스 보안](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/jwt-stateless-security.md): 20개 질문, Senior - [OAuth2와 Authorization Server](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/oauth2-authorization-server.md): 20개 질문, Senior - [Spring Boot와 Docker](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-boot-docker.md): 19개 질문, Senior - [Spring을 활용한 마이크로서비스](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/microservices-basics.md): 25개 질문, Senior - [Spring Cloud Config](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/spring-cloud-config.md): 19개 질문, Senior - [성능 최적화](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/performance-optimization.md): 30개 질문, Senior - [GraalVM Native Images](https://sharpskill.dev/ko/technologies/spring-boot/interview-questions/graalvm-native-images.md): 20개 질문, Senior --- Source: SharpSkill (https://sharpskill.dev), tech interview preparation for your real stack. 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