Java 如何设置默认序列生成器分配大小

您应该使用@GenericGenerator而不是@SequenceGenerator来获得更精细的控制来生成序列.

通过SequenceStyleGenerator.CONFIG_SEQUENCE_PER_ENTITY_SUFFIX找到了一种老套的方法来生成子类的序列，甚至不需要修改它们.

试试这个:

import jakarta.persistence.*;
import org.hibernate.annotations.GenericGenerator;
import org.hibernate.annotations.Parameter;
import org.hibernate.id.enhanced.SequenceStyleGenerator;

@MappedSuperclass
public class BaseIdentifier {

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "custom_gen")
    @GenericGenerator(name = "custom_gen", strategy = "org.hibernate.id.enhanced.SequenceStyleGenerator",
            parameters = {
                    @Parameter(name = SequenceStyleGenerator.CONFIG_SEQUENCE_PER_ENTITY_SUFFIX, value = "_seq"),
                    @Parameter(name = SequenceStyleGenerator.INITIAL_PARAM, value = "1"),
                    @Parameter(name = SequenceStyleGenerator.INCREMENT_PARAM, value = "1")})
    @Column(updatable = false, nullable = false)
    private Long id;

}

Order_TABLE:

import jakarta.persistence.Entity;

@Entity
public class Order_Table extends BaseIdentifier {

}

购买:

import jakarta.persistence.Entity;

@Entity
public class Purchase extends BaseIdentifier {

}

Spring Boot日志(log):

I've tested with Oracle DB, it's working.个

Order_TABLE:

-购买:

Order_TABLE_SEQ:

采购序号: