關於java.lang.ClassCastException: java.lang.String問題

最近做一個項目 其中需要整合同事的一個部分 但在這裏遇見了很煩躁的問題

如下是異常代碼

(67265 ms) [http-8079-2] ERROR: com.sofmit.trms.dao.TShortMsgDAO#save : save failed
java.lang.ClassCastException: java.lang.String
	at org.hibernate.type.TimestampType.deepCopyNotNull(TimestampType.java:66)
	at org.hibernate.type.MutableType.deepCopy(MutableType.java:25)
	at org.hibernate.type.TypeFactory.deepCopy(TypeFactory.java:323)
	at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:255)
	at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:167)
	at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:101)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
	at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
	at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
	at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:530)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:514)
	at org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:635)
	at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:372)
	at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:632)
	[color=red]at com.sofmit.trms.dao.TShortMsgDAO.save(TShortMsgDAO.java:42)[/color]
	[color=red]at com.sofmit.trms.struts.action.sendmessage.SendMsgAction.execute(SendMsgAction.java:76)[/color]
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	at com.sofmit.trms.util.MyActionServlet.process(MyActionServlet.java:25)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
(67281 ms) [http-8079-2] WARN : org.apache.struts.action.RequestProcessor#processException : Unhandled Exception thrown: class java.lang.ClassCastException
2008-3-5 11:26:09 org.apache.catalina.core.StandardWrapperValve invoke

其中紅色部分報錯的代碼我發上來 請大家指教一下
[color=red]at com.sofmit.trms.dao.TShortMsgDAO.save(TShortMsgDAO.java:42)[/color]

public void save(TShortMsg transientInstance) {
		log.debug("saving TShortMsg instance");
		try {
			getHibernateTemplate().save(transientInstance);//此處爲42行		                  log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

[color=red]at com.sofmit.trms.struts.action.sendmessage.SendMsgAction.execute(SendMsgAction.java:76)[/color]

shortMsg.setSendTime(sendTime);
		shortMsg.setContent(content);
		shortMsg.setTheme(theme);
		shortMsg.setSenderId(Integer.valueOf(senderid));
		shortMsg.setTPerson(user);
		shortMsg.setExistStatus(1);
		shortMsg.setReadStatus(1);

		shortmsgdao.save(shortMsg);//此處爲76行,這是一個action中給予對象賦值然後保存的作用

自己在網上找了很多相關的資料和請教沒有得到太好的回答,希望各位能一點建議,謝謝