-- 作者：hanchaoman
-- 发布时间：5/10/2007 3:39:00 PM
-- null id in org.hibernate.User entry (don't flush the Session after an exception occurs)?
小弟做个系统，在登陆和注册新用户时，登陆几次后就产生以下错误
type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: null id in org.hibernate.User entry (don't flush the Session after an exception occurs)
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause org.hibernate.AssertionFailure: null id in org.hibernate.User entry (don't flush the Session after an exception occurs)
org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:48)
org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:150)
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:106)
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:195)
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76)
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:35)
org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:954)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1099)
org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:749)
org.hibernate.UserDAO.getUserByName(UserDAO.java:110)
com.yourcompany.struts.action.LoginAction.execute(LoginAction.java:49)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.
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