출처 : 실전! 스프링 데이터 JPA 섹션 1. 프로젝트 환경설정 @Setter를 넣기 보다는 package study.datajpa.entity; import lombok.Getter; import lombok.Setter; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity @Getter @Setter public class Member { @Id @GeneratedValue private Long id; private String username; protected Member() { } public Member(String username) { this..