Question

myeclipse中新建了一个hibernate项目，运行时出现如下错误，求解！！！

Exception in thread "main" java.lang.ExceptionInInitializerError
at view.HibernateTest.main(HibernateTest.java:29)
Caused by: org.hibernate.MappingException: could not instantiate id generator [entity-name=zte.Userinfo]
at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:132)
at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:175)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:230)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1341)
at util.HibernateUtil.<clinit>(HibernateUtil.java:11)
... 1 more
Caused by: org.hibernate.MappingException: Dialect does not support sequences
at org.hibernate.dialect.Dialect.getSequenceNextValString(Dialect.java:619)
at org.hibernate.id.SequenceGenerator.configure(SequenceGenerator.java:88)
at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:127)
... 5 more

Answer 1

主见生成策略不正确，还有一个错误时，在映射文件中Dialect 是是数据库的发言，不支持该主见生成策略，查看在hibernate配置文件当汇总的
<id name="carid" type="java.lang.String">
<column name="CARID" length="200" />
<generator class="native" />
</id>
<generator class="native" />是否配置正确呢？看看你连接的什么数据库啦

Answer 2

产生序列的方式hibernate不支持

追问

难道是是属性设置有问题？