Java com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException:无法删除或更新父行：外键约束失败

我将按id删除对象，但出现如下错误：

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException:无法删除或更新父行：外键约束失败（

mydatabase

，constraint

FKqgsllo6dm5kdx7ptc3qu5mefd

外键（

auditor\u group\u id

）引用

auditor\u group

（

auditor\u group\u id

）

我按id删除的方法是：

@DeleteMapping("/assignment-audit/{id}")
    public ResponseEntity<String> deleteAssignmentAudit(@PathVariable("id") long id) {
        System.out.println("Delete AssignmentAudit with ID = " + id + "...");

        assignmentAuditRepository.deleteById(id);

        return new ResponseEntity<>("Assignment Audit has been deleted!", HttpStatus.OK);
    }

AuditorGroup.java

@Entity
@Table(name = "auditor_group")
public class AuditorGroup implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long auditorGroupId;

    @Column(name="group_desc")
    private String groupDesc;

    @Column(name="from_date")
    private String fromDate;

    @Column(name="to_date")
    private String toDate;
}

AssignmentAuditRepository.java

public interface AssignmentAuditRepository extends JpaRepository<AssignmentAudit, Long> {

}

公共接口分配AuditRepository扩展了JpaRepository{
}

---

我只需要通过其

id

删除

assignmentAudit

，这样

selection

和

auditGroup

在

assignmentAudit

被删除时保持不变且不受影响。

您必须从

@manytone

映射中删除

cascade=CascadeType

或者更改它，这样就不包括
CascadeType.DELETE
。
我怎么能只忽略所有类型的CascadeType.DELETE？我需要确切的代码来更改它？我更改并工作了：）非常感谢您的帮助
@Entity
@Table(name = "auditor_group")
public class AuditorGroup implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long auditorGroupId;

    @Column(name="group_desc")
    private String groupDesc;

    @Column(name="from_date")
    private String fromDate;

    @Column(name="to_date")
    private String toDate;
}

public interface AssignmentAuditRepository extends JpaRepository<AssignmentAudit, Long> {

}