我有一个springboot项目，其中包含了工作过的数据库数据，我有一个数据库模式，以前的开发人员编写了这个模式来Map多对多关系。

import javax.persistence.*;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Objects;
import java.util.Set;

@Entity(name = "Image")
@Table(name = "image")
public class Image extends DateAudit {

    private String originName;
    private String path3;

    @OneToMany(mappedBy = "image", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true)
    private Set<ImageTag> imageTags = new HashSet<>();

    public void setImageTags(Set<ImageTag> imageTags) {
        this.imageTags = imageTags;
    }

    public void addImageTag(ImageTag imageTag) {
        this.imageTags.add(imageTag);
    }

    public void addTag(Tag tag) {
        ImageTag imageTag = new ImageTag(this,tag);

        this.imageTags.add(imageTag);
    }

    public void removeTag(Tag tag) {
        for (Iterator<ImageTag> iterator = imageTags.iterator();
             iterator.hasNext(); ) {
            ImageTag imageTag = iterator.next();

            if (imageTag.getImage().equals(this) &&
                    imageTag.getTag().equals(tag)) {
                iterator.remove();
                imageTag.getTag().getImageTags().remove(imageTag);
                imageTag.setImage(null);
                imageTag.setTag(null);
            }
        }
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;

        if (o == null || getClass() != o.getClass())
            return false;

        Image image = (Image) o;
        return Objects.equals(originName, image.originName);
    }

    @Override
    public int hashCode() {
        return Objects.hash(originName);
    }
}

标记表

@Entity(name = "Tag")
@Table(name = "tag")
public class Tag {

    @Id
    @GeneratedValue
    private Long id;

    @NaturalId
    private String tag;

    @OneToMany(mappedBy = "tag")
    private Set<ImageTag> imageTags = new HashSet<>();

    public Tag() {
    }

// getters setters 
}

imagetag bunch表，创建多对人的关系

@Entity(name = "ImageTag")
@Table(name = "image_tag")
public class ImageTag {

    @EmbeddedId
    private ImageTagId id;

    @ManyToOne(cascade = CascadeType.ALL)
    @MapsId("imageId")
    private Image image;

    @ManyToOne(cascade = CascadeType.ALL)
    @MapsId("tagId")
    private Tag tag;

    public ImageTag() {
    }

/// gettters/setterg

}

复合键

@Embeddable
public class ImageTagId implements Serializable {

    @Column(name = "image_id")
    private Long imageId;

    @Column(name = "tag_id")
    private Long tagId;

    public ImageTagId() {
    }

    public ImageTagId(
            Long imageId,
            Long tagId) {
        this.imageId = imageId;
        this.tagId = tagId;
    }

// Getters setters
}

当前数据库模式请在此处输入图像描述
例如，创建新图像，实现标签，如将值设置为hashmap

public ImageResponse saveImage(ImageSaveRequest request) {
        Image image = imageMapper.toImage(request);

        Image finalImage = image;
        List<TagResponse> tags = request.getTags().stream()
                .map(tagResponse -> {
                    Optional<Tag> fromDB = tagRepo.findAllByTagLike(tagResponse);
                    Tag tag = fromDB.orElseGet(() -> tagRepo.save(new Tag(tagResponse)));
                    ImageTag ig = new ImageTag(finalImage, tag);
                    finalImage.addImageTag(ig);
                    tag.addImageTag(ig);

                    return imageMapper.tagToTagResponse(tag);
                }).collect(toList());

        image = imageRepo.saveAndFlush(finalImage);
        return imageMapper.toImageResponse(image, tags);
    }

当我试图编辑当前标记时，我删除了以前的标记并尝试创建新的标记

List<TagResponse> tags = listTags.stream()
                .map(tagResponse -> {
                    Optional<Tag> fromDB = tagRepo.findAllByTagLike(tagResponse);
                    Tag tag = fromDB.orElseGet(() -> tagRepo.save(new Tag(tagResponse)));
                    ImageTag ig = new ImageTag(finalImage, tag);

                    tag.addImageTag(ig);

                    finalImage.addImageTag(ig);
                    tag.addImageTag(ig);

                    return imageMapper.tagToTagResponse(tag);
                }).collect(toList());

imageRepo.saveAndFlush(finalImage);

我有个例外：

org.springframework.orm.jpa.JpaObjectRetrievalFailureException: Unable to find com.monstabet.game.management.service.db.entity.ImageTag with id com.monstabet.game.management.service.db.entity.ImageTagId@17f65; nested exception is javax.persistence.EntityNotFoundException: Unable to find com.monstabet.game.management.service.db.entity.ImageTag with id com.monstabet.game.management.service.db.entity.ImageTagId@17f65

如何从图像表正确编辑图像标签？