identifier of an instance of xxx was altered from 1 to 1

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今天测试一个项目，这个项目使用了hibernate和spring，报错信息如下：

org.springframework.orm.hibernate4.HibernateSystemException: identifier of an instance of com.tdr.push.entity.ThreadPushFail was altered from 1 to 1; nested exception is org.hibernate.HibernateException: identifier of an instance of com.tdr.push.entity.ThreadPushFail was altered from 1 to 1

 后来发现是因为实体类中id的属性和hbm.xml配置文件中id的属性不一致造成的。

我实体类中的id属性是：

public class ThreadPushFail {
	private long id;
	/***
	 * 推送消息的id
	 */
	private long pushMessageId;

 

hbm.xml配置文件中id的属性：

    
        
            
                主键id
            
            
        

 一个是int，一个是long

解决方案：是id的属性保持一致。

 

参考：http://blog.csdn.net/lsbhjshyn/article/details/5287554