引用
Hibernate使用sequence生成自动主键,需两步 1:在库中建立sequence
CREATE SEQUENCE exp_sequence
INCREMENT BY 1
START WITH 1
NOMAXVALUE
NOCYCLE
NOCACHE ;
2:在hbm.xml文件中配置如下
<id name="userId" type="java.math.BigDecimal">
<column name="USER_ID" precision="22" scale="0" />
<generator class="sequence">
<param name="sequence">exp_sequence</param>
</generator>
</id>