【发布时间】：2010-12-14 13:42:55
【问题描述】：
我已经使用了休眠的 maven 插件，它生成了实体类，但没有识别与 ID 字段相关的序列，id 字段生成为 BigDecimal ......现在即使我通过代码指向现有序列，如..
@Entity
@javax.persistence.SequenceGenerator(
name = "SEQ_NATUREMASTER", sequenceName = "aop_teqachers_school_nature_id_seq")
@Table(name = "aop_teachers_school_nature_master", schema = "public", uniqueConstraints = @UniqueConstraint(columnNames = "school_nature"))
public class AopTeachersSchoolNatureMaster implements java.io.Serializable {
/**
* Above code is added after generating entity class
*/
private BigDecimal id;
我收到错误
INFO : aop.web.teacher.controller.SchoolMasterInsertController - Attemped saving!testnature
Hibernate: select nextval ('aop_teqachers_school_nature_id_seq')
Dec 14, 2010 6:57:26 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet appServlet threw exception
org.hibernate.id.IdentifierGenerationException: this id generator generates long, integer, short or string
at org.hibernate.id.IdentifierGeneratorHelper.get(IdentifierGeneratorHelper.java:123)
at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:101)
at org.hibernate.id.SequenceHiLoGenerator.generate(SequenceHiLoGenerator.java:81)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:122)
at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:69)
at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)
at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:650)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:624)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:628)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:308)
【问题讨论】：
标签： java hibernate postgresql jpa sequence