Hibernate映射REST治愈操作

Question

我在REST中开发了一个CURD操作，但是坚持了hibernate关系，当我做CURD时，没有什么能正常工作。请帮帮我。以下是问题所在：

@Entity
@Table(name = "reminder")
@JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = "reminder")
//@JsonInclude(JsonInclude.Include.NON_NULL)
   public class Reminder implements Serializable {
    private static final long serialVersionUID = -1232395859408322328L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "reminder_id")
    private int reminderId;

    @JsonIgnore
    @OneToOne(mappedBy = "reminder", cascade = CascadeType.ALL, fetch = FetchType.EAGER, optional = true)
    private Contract contract;

    @JsonIgnore
    @OneToOne(mappedBy = "reminder", cascade = CascadeType.ALL, fetch = 
    FetchType.EAGER, optional = true)
    private Asset asset;

    //@JsonIgnore
    @OneToOne(mappedBy = "reminder", cascade = CascadeType.ALL, fetch = 
    FetchType.LAZY, optional = true)
    private StaffRecord staffRecords;

}


@Entity
@Table(name="staff_record")
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = "staff_record")
@JsonInclude(JsonInclude.Include.NON_NULL)
public class StaffRecord implements Serializable
{
    private static final long serialVersionUID = -1232395859408322328L;


    //----- all database columns in Staff_Record table--------
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="staff_record_id")
    private int staffRecordId;

    //@JsonBackReference
    @OneToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinColumn(name = "reminder_id")
    private Reminder reminder;

    @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.REMOVE)
    @JoinColumn(name="staff_id", referencedColumnName="staff_id")
    private Staff staffs;

    @ManyToOne(fetch = FetchType.EAGER,cascade=CascadeType.REMOVE)
    @JoinColumn(name = "record_type_id", referencedColumnName = "record_type_id")
    private RecordType rocrdType;
}


@Entity
@Table(name="staff")
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = "staff")
public class Staff implements Serializable
{
    private static final long serialVersionUID = -1232395859408322328L;


    //----- all database columns in Equipment table--------
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="staff_id")
    private int staff_Id;

    @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.MERGE, optional=false)
    @JoinColumn(name="department_id" )
    private Department departments;

    @JsonIgnore
    @OneToMany(mappedBy="staffs", fetch=FetchType.LAZY, cascade=CascadeType.ALL)
    List<StaffRecord> staffRecords;

    @JsonIgnore
    @JoinColumn(name = "user_group_id")
    @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
    private Groups userGroupId;

}

class RecordType{
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "record_type_id")
private int recordTypeId;
// No Mapping
}

当创建，删除，更新，获取，我得到问题，我读了很多关于映射什么没有运气的文章。在我打电话的地方有一个RestController。腐朽与逝去

提醒

作为参数。我将创建一个RequestModel并使用getter setter，但是我想使用映射。

Answer 1

我通过做以下更改来解决这个问题：

在Reminder类中，不需要映射就可以将映射移动到相应的类。

在Staff_Record类中，人员和record_Type映射都需要cascade= CascadeType.ALL。

在Staff类中，不需要staffRecords，因为我们已经在Staff类中映射了它们。

希望这会对其他人有所帮助。