java - hibernate MySQL

Question

假设我有这样的 POJO，并且我想将文章插入 MySQL 数据库。

@Entity
@Table(name = "article")
public class Article{
    private String author;
    private String body;
    private int commentCount;
    private List<EntryComment> comments;


@Entity
@Table(name = "comments")
public class Comment{
    private String author;
    private String body;
    private int voteCount;

我想将评论放入另一个表中，而不删除“Article.txt”中的字段 comments。是否可以使用 hibernate 注释将注释放在单独的表中？

Answer 1

当然是这样。我建议您对字符串和 int 元素具有 @Column 的所有元素使用注释，但是对于注释，只需查看下面的代码:

文章类别:

@Entity
@Table(name = "article")
public class Article{
    private String author;
    private String body;
    private int commentCount;

    @OneToMany(mappedBy = "article")
    @LazyCollection(LazyCollectionOption.TRUE)
    private List<EntryComment> comments;

评论类:

@Entity
@Table(name = "comments")
public class Comment{

    @ManyToOne(fetch = FetchType.LAZY)
    private Article article;

    private String author;
    private String body;
    private int voteCount;