인프런 커뮤니티 질문&답변

[질문 템플릿]
1. 강의 내용과 관련된 질문인가요? 예
2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예
3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예

[질문 내용]
다대다 연관관계가 안좋다해서 중간 엔티티로 categoryitem을 만들어서 해보고있는데

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: mappedBy reference an unknown target entity property: Shop.ShopingMall.domain.Category.category_item in Shop.ShopingMall.domain.CategoryItem.categories 이러한 오류가 떴습니다.. 해결방법이 뭘까요??

코드는 다음과 같습니다

package Shop.ShopingMall.domain;

import lombok.Getter;
import lombok.Setter;

import javax.persistence.*;
import java.util.ArrayList;
import java.util.List;

@Entity
@Getter @Setter
public class Category {

    @Id @GeneratedValue
    @Column(name = "category_id")
    private Long id;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "category_item_id")
    private CategoryItem categoryItem;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "parent_id")
    private Category parent;

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

package Shop.ShopingMall.domain;

import Shop.ShopingMall.domain.Item.Item;
import lombok.Getter;
import lombok.Setter;

import javax.persistence.*;
import java.util.ArrayList;
import java.util.List;

@Entity
@Getter @Setter
public class CategoryItem {

    @Id @GeneratedValue
    @Column(name = "category_item_id")
    private Long id;

    @OneToMany(mappedBy = "category_item")
    private List<Category> categories = new ArrayList<>();

    @OneToMany(mappedBy = "category_item")
    private List<Item> items = new ArrayList<>();
}

package Shop.ShopingMall.domain.Item;

import Shop.ShopingMall.domain.CategoryItem;
import lombok.Getter;
import lombok.Setter;

import javax.persistence.*;

@Entity
@Getter @Setter
public class Item {

    @Id @GeneratedValue
    @Column(name = "item_id")
    private Long id;

    private String name;

    private int price;

    private int stockQuantity;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "category_item_id")
    private CategoryItem categoryItem;
}