인프런 커뮤니티 질문&답변

• 강의 기준 ('07:50) 스프링 부트 실행시, BeanCreationException오류가 발생합니다. 아래는 콘솔창의 에러문 입니다

• 에러 메세지를 보면 Category 와 Item 클래스간 매핑이 되지 않았다 라는 식의 메세지가 확인됩니다

• 코드 상으로는 연관관계 매핑이 되어 있는데 어떤 이유인지 모르겠습니다 ㅠ

콘솔-오류 메시지

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Use of @OneToMany or @ManyToMany targeting an unmapped class: com.jpabook.jpashop.domain.item.Item.categories[jdk.jfr.Category]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.23.jar:5.3.23]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.23.jar:5.3.23]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.23.jar:5.3.23]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.23.jar:5.3.23]

Category

@Entity
@Getter
@Setter
public class Category {
    @Id
    @GeneratedValue
    @Column(name = "category_id")
    private Long id;

    private String name;

    @ManyToMany
    @JoinTable(name = "category_item",
        joinColumns = @JoinColumn(name = "category_id"),
        inverseJoinColumns = @JoinColumn(name = "item_id"))
    private List<Item> items = new ArrayList<>();

    @ManyToOne
    @JoinColumn(name = "parent_id")
    private Category parent;

    @OneToMany(mappedBy = "parent")
    private List<Category> child = new ArrayList<>();
}

Item

@Entity
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "dType")
@Getter @Setter
public abstract class Item {
    @Id @GeneratedValue
    private Long id;

    private String name;

    private int price;

    private int stockQuantity;

    @ManyToMany(mappedBy = "items")
    private List<Category> categories = new ArrayList<>();
}