ids for this class must be manually assigned before calling save():
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错误原因：
你要操作的数据库主键id设置是自增长型的，而hibernate，id的生成方式是assigned。
解决方法：
注解型：在你的主键列上添加注解
@GeneratedValue(generator = "generator")
@Id
@GenericGenerator(name = "generator", strategy = "increment")
配置文件型：
<id name="id" type="integer">
<column name="id" />
<generator class="assigned" />
</id>
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- ids for this class must be manually assigned before calling save():***错误说明
- error:ids for this class must be manually assigned before calling save():
- error:ids for this class must be manually assigned before calling save()
- ids for this class must be manually assigned before calling save()
- error:ids for this class must be manually assigned before calling save():
- ids for this class must be manually assigned before calling save() hibernate
- org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save():
- IdentifierGenerationException: ids for this class must be manually assigned before calling save()
- ids for this class must be manually assigned before calling save()..
- HibernateSystemException--ids for this class must be manually assigned before calling save()
- error:ids for this class must be manually assigned before calling save():
- 关于 error:ids for this class must be manually assigned before calling save(): 的解决方案
- ids for this class must be manually assigned before calling save():
- 工作札记--“ids for this class must be manually assigned before calling save”解决办法
- ids for this class must be manually assigned before calling save()..
- ids for this class must be manually assigned before calling save()
- message ids for this class must be manually assigned before calling save(): ID 的问题
- ids for this class must be manually assigned before calling save():
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