1. 의존성 추가Maven org.springframework.boot spring-boot-starter-loggingGradleimplementation 'org.springframework.boot:spring-boot-starter-logging' 2. 로깅 레벨 설정 application.properties 혹은 application.ymllogging.level.root=INFOlogging.level.com.example=DEBUGlogging.file.name=app.log 3. 로거 선언 Controller.javaimport org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.bind.a..