기존의 프로젝트에 Bean Validation을 적용해보았다. package hello.itemservice.domain.item;import lombok.Data;import org.hibernate.validator.constraints.Range;import javax.validation.constraints.NotBlank;import javax.validation.constraints.NotNull;@Datapublic class Item { private Long id; @NotBlank(message = "공백X") private String itemName; @NotNull @Range(min = 1000, max = 1000000) private Integ..