@GeneratedValue(策略= GenerationType.SEQUENCE)和startVaule

Question

在Hibernate中使用@GeneratedValue Annotation并向DB添加新实体时，它的id为1 ...N.有没有可能设置第一个值，这样它就会得到id，例如10000…不是？

Answer 1

SequenceStyleGenerator应该做到这一点：

@GeneratedValue(generator = SEQUENCE_GENERATOR)
@GenericGenerator(name = SEQUENCE_GENERATOR,
        strategy = "org.hibernate.id.enhanced.SequenceStyleGenerator", parameters = {
        @Parameter(name = "sequence_name", value = "my_sequence"),
        @Parameter(name = "initial_value", value = "1001"),
        @Parameter(name = "increment_size", value = "1"),
        @Parameter(name = "value_column", value = "my_squence_id") })