JPA更改新增操作报错identifier an instance of .... was altered from 58 to nuLL；
原因如下： 解决的办法是因为我前面的代码位置错误而导致更改一下边可，因为我用到的BeanUtils.copyProperties(sources,target) 一开始我是反过来导致的问题，后面过仔细勘察，才发现反了，一开始BeanUtils.copyProperties(put1,put)这样存在问题 正确的是BeanUtils.copyProperties(put,put1) ，下图是正确
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相关文章
- 1. identifier of an instance of com.xjgx.domain.education.PropagandaDatail was altered from 8a82a6ef74b
- 2. identifier of an instance of xx.entity was altered from xxKey@249e3cb2 to xxKey@74e8f4a3; nested exc
- 3. 【hibernate】错误：org.hibernate.HibernateException: identifier of an instance of com.agen.entity.Monthde...
- 4. org.hibernate.HibernateException: identifier of an instance of 实体类的完整类路径 was altered from X to X.
- 5. sqlplus conneted to an idle instance
- 6. 关于“NullReferenceException: Object reference not set to an instance of an object”的思考
- 7. 【IllegalArgumentException】: object is not an instance of declaring class
- 8. org.codehaus.jackson.map.JsonMappingException: Can not construct instance of java.util.Date from Str
- 9. Null value was assigned to a property of primitive
- 10. NullReferenceException: Object reference not set to an instance of an object（GameManager.instance为空）