Hibernate: ids for this class must be manually assigned before calling save():

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Hibernate: ids for this class must be manually assigned before calling save():

原文: http://blog.csdn.net/softimes/article/details/7008875 引起问题的原因: 由Hibernate根据数据库表自动生成的"类名.hbm.xml"映射文件引起的. 首先我的表(Info)由两个字段组成,即: int id;//主建 String name; (自己做测试,所以就简单的建了个表) 由Hibernate生成的Info.hbm.xml中是这样写的: -------------------------------------…

org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save()

org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): com.zh.hibernate.subclass.Person at org.hibernate.id.Assigned.generate(Assigned.java:52) at org.hibernate.event.internal.Abstrac…

Caused by: org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): com.qingmu.seller.entity.OrderMaster

org.springframework.orm.jpa.JpaSystemException: ids for this class must be manually assigned before calling save(): com.qingmu.seller.entity.OrderMaster; nested exception is org.hibernate.id.IdentifierGenerationException: ids for this class must be m…

ids for this class must be manually assigned before calling save():

Caused by: javax.persistence.PersistenceException: org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): com.cjonline.ship.entity.TBLMyRecents at org.hibernate.ejb.AbstractEntityManagerImp…

hibernate save数据的时候报错：ids for this class must be manually assigned before calling save()

这个错误是因为eclipse 这种jpatools 自动生成的实体类内没把id 设置为自增,还有id的值在生成的时候默认为string 即使加上了也所以无法自增 ,所以还需要把string 换成Integer ,因为是自增所以无需送数,把后边的getid setid 删除掉酒可以 @Id @GeneratedValue(strategy = GenerationType.AUTO) // private String id; private Integer id; // public I…

报错:Caused by: org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): cn.itcast.bos.domain.base.SubArea

因为实体类中的主键是String类型不能自动为其分配id 所以需要手动设置在service层 model.setId(UUID.randomUUID().toString());…

错误/异常：org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save() 的解决方法

1.错误/异常视图错误/异常描述:id的生成错误,在调用save()方法之前,必须先生成id. 2.解决方法在对应的实体类的主键(id)的get方法上加上:@GeneratedValue(strategy = GenerationType.AUTO) 这句话即可.括号中的值,根据你使用的数据库类型改. 原创作者:DSHORE 作者主页:http://www.cnblogs.com/dshore123/ 原文出自:https://www.cnblogs.com/dshore123/p…