Spring Data JPA 覆盖数据库默认值问题解决方案

package com.example.configcrud.model;

import javax.persistence.*;
import java.sql.Timestamp;

@Entity
@Table(name = "properties")
public class Properties {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;

    @Column(name = "application")
    private String application;

    @Column(name = "profile")
    private String profile;

    @Column(name = "label")
    private String label;

    @Column(name = "prop_key")
    private String propKey;

    @Column(name = "value")
    private String value;

    @Generated(GenerationTime.INSERT)
    @Column(name = "created_on", updatable = false, insertable = false)
    private Timestamp createdOn;

    @Column(name = "created_by", updatable = false)
    private String createdBy;

    // 构造函数、getter 和 setter 方法
    public Properties(String application, String profile, String label, String propKey, String value) {
         this.application = application;
         this.profile = profile;
         this.label = label;
         this.propKey = propKey;
         this.value = value;
    }

    public Properties() {
    }

    public String getApplication() {
        return application;
    }

    public void setApplication(String application) {
        this.application = application;
    }

    public String getProfile() {
        return profile;
    }

    public void setProfile(String profile) {
        this.profile = profile;
    }

    public String getLabel() {
        return label;
    }

    public void setLabel(String label) {
        this.label = label;
    }

    public String getPropKey() {
        return propKey;
    }

    public void setPropKey(String propKey) {
        this.propKey = propKey;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public Timestamp getCreatedOn() {
        return createdOn;
    }

    public Timestamp setCreatedOn() {
        return createdOn;
    }

    public String getCreatedBy() {
        return createdBy;
    }

    public String setCreatedBy() {
        return createdBy;
    }

    @Override
    public String toString() {
        return "Properties [id=" + id + ", " +
                "application=" + application + ", " +
                "profile=" + profile + ", " +
                "label=" + label +
                "propkey=" + propKey +
                "value=" + value +
                "CreatedOn=" + createdOn +
                "CreatedBy=" + createdBy + "]";
    }
}