springboot jpa实现优雅处理isDelete的默认值

import javax.persistence.MappedSuperclass;
import javax.persistence.PrePersist;

@MappedSuperclass
public abstract class BaseEntity {

    protected Integer isDelete;

    @PrePersist
    public void prePersist() {
        if (isDelete == null) {
            isDelete = 0; // 设置默认值为0
        }
    }

    // Getter 和 Setter
    public Integer getIsDelete() {
        return isDelete;
    }

    public void setIsDelete(Integer isDelete) {
        this.isDelete = isDelete;
    }
}

import javax.persistence.Entity;
import javax.persistence.Id;

@Entity
public class MyEntity extends BaseEntity {

    @Id
    private Long id;

    // 其他字段、getter 和 setter
}

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import java.lang.reflect.Field;

@Aspect
@Component
public class DefaultValueAspect {

    @PersistenceContext
    private EntityManager entityManager;

    @Before("execution(* com.example.repository.*.save(..))") // 根据你的仓库路径调整
    public void setDefaultValues(Object entity) throws IllegalAccessException {
        Field[] fields = entity.getClass().getDeclaredFields();
        for (Field field : fields) {
            if ("isDelete".equals(field.getName())) { // 检查字段名
                field.setAccessible(true);
                if (field.get(entity) == null) {
                    field.set(entity, 0); // 设置默认值为0
                }
            }
        }
    }
}

import javax.persistence.PostLoad;
import javax.persistence.PrePersist;
import javax.persistence.EntityListeners;

public interface DeletedField {

  	Integer getDeletedFlag();

	void setDeletedFlag(Integer deletedFlag);
}

public class DeleteDefaultValueListener {

	@PrePersist
	public void setDefaultValues(DeletedFlagField deletedFlagField) {
		if (deletedFlagField.getDeletedFlag() == null) {
			deletedFlagField.setDeletedFlag(0); // 设置默认值为0
		}
	}

}

@EntityListeners(DefaultValueListener.class)
@Entity
public class TableUserAccount extends EntityBase implements DeletedFlagField {

  	/**
	 * 删除标识（逻辑删除），1删除 0未删除
	 */
	@Column(name = "deleted_flag")
	private Integer deletedFlag;
}

public interface CreatedByField {

	String getCreatedBy();

	void setCreatedBy(String createdBy);

}

@Getter
@Setter
@MappedSuperclass
@EntityListeners({ AuditingEntityListener.class, UpdatedByDefaultValueListener.class,
		CreatedByDefaultValueListener.class })
public abstract class EntityBase implements Serializable, CreatedByField, UpdatedByField {

	/**
	 * 创建人
	 */
	@Column(name = "created_by")
	private String createdBy;

	/**
	 * 修改人
	 */
	@Column(name = "updated_by")
	private String updatedBy;
	}

public class CreatedByDefaultValueListener implements ApplicationContextAware {

	private ApplicationContext applicationContext;

	@PrePersist
	public void setDefaultValues(CreatedByField createdByField) {
		if (createdByField.getCreatedBy() == null) {
			if (this.applicationContext.getBean(AuditorAwareImpl.class) != null) {
				createdByField.setCreatedBy(
						this.applicationContext.getBean(AuditorAwareImpl.class).getCurrentAuditor().orElse(""));

			}
		}
	}

	/**
	 * @param applicationContext
	 * @throws BeansException
	 */
	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		this.applicationContext = applicationContext;
	}

}