如何使用休眠 java 将自定义 class 保存到 mysql 数据库

Question

我有一个 class FilmSession，它是一个数据库实体：

@Entity
@Table(name = "film_session")
public class FilmSession {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private SessionInfo sessionInfo;
}

我应该将 sessionInfo 解析为 JSON 吗？如果是这样，如何？或者我应该像 String in db 一样保存这个字段吗？

会话信息class:

public class SessionInfo {
    private Long film_id;
    private Long cinema_id;
    private SeatStatus[][] seatStatuses;
    private Double price;
    private Date date;
}

Answer 1

像这样：

@Entity
@Table(name = "film_session")
public class FilmSession {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @OneToOne(cascade = {CascadeType.ALL})
    @JoinColumn(name = "session_info", referencedColumnName = "session_id")
    private SessionInfo session_info;
}

@Entity
@Table(name = "session_info")
public class SessionInfo {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long session_id;
    ....
}

如何使用休眠 java 将自定义 class 保存到 mysql 数据库

How can I save the custom class to mysql database using hibernate java

java

spring

hibernate