java JPA组合主键/外键映射
我有两张桌子
然后我尝试使用类似@Embeddable
的This reference进行映射
一周的努力。java
@Entity
@IdClass(Week_Effort.class)
@Table(name = "week_effort")
public class Week_Effort implements Serializable {
private static final long serialVersionUID = -2825819221813101109L;
@Id
@Column(name="week_id")
private int week_id;
@Id
@Column(name="timesheet_id")
private int timesheet_id;
@Column(name="day1")
private int day1;
@ManyToOne(fetch = FetchType.LAZY ,cascade=CascadeType.ALL)
@JoinColumn(name="timesheet_id" , referencedColumnName = "timesheet_id",insertable=false, updatable=false , foreignKey = @ForeignKey(name = "fkweekts"))
private Timesheet timesheet_id ;
.
.
.
//get and set
}
时间表。java
@Entity
@Table(name = "timesheet")
public class Timesheet implements Serializable{
private static final long serialVersionUID = 7014333990749288304L;
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Id
@Column(name = "timesheet_id")
private int timesheet_id;
@OneToMany(mappedBy="timesheet_id" , cascade=CascadeType.ALL)
private Set<Week_Effort> weekeffort ;
.
.
.
//get and set
}
周末。java
@Embeddable
public class WeekEmbed implements Serializable {
private static final long serialVersionUID = 3229945076116848141L;
int timesheet_id;
int week_id;
//get set
}
我使用AJAX将参数发布为类似json的格式
{"timesheet_id":1,"day1":"8"} //and more 6 parameter
week_id由某个进程生成,然后在Jparepository中使用CRUD添加之前进行设置。但是错误
java.sql.SQLException: Parameter index out of range (10 > number of parameters, which is 9)
如何解决这个问题?我做错了什么
# 1 楼答案
发件人:Hibernate: Parameter index out of range (8 > number of parameters, which is 7)
我把
@IdClass
改为周末。类并删除某些部分,然后将@Id
添加到对象映射中一周的努力。java