HTTP Status 500 - [bold]type[/bold] Exception report
[bold]message[/bold]
[bold]description[/bold] [underline]The server encountered an internal error () that prevented it from fulfilling this request.[/underline]
[bold]exception[/bold]
javax.servlet.ServletException: java.lang.reflect.InvocationTargetException
    org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
[bold]root cause[/bold]
java.lang.reflect.InvocationTargetException
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:585)
    framework.BaseAction.executeRule(BaseAction.java:95)
    framework.BaseAction.execute(BaseAction.java:52)
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
[bold]root cause[/bold]
org.hibernate.PropertyValueException: not-null property references a null or transient value: test.po.UserInf.username
    org.hibernate.engine.Nullability.checkNullability(Nullability.java:72)
    org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:265)
    org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:167)
    org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:101)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
    org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
    org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
    org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:530)
    org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)
    org.hibernate.impl.SessionImpl.save(SessionImpl.java:514)
    test.mode.rule.RegisterAction.register(RegisterAction.java:43)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:585)
    framework.BaseAction.executeRule(BaseAction.java:95)
    framework.BaseAction.execute(BaseAction.java:52)
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
[bold]note[/bold] [underline]The full stack trace of the root cause is available in the Apache Tomcat/6.0.14 logs.[/underline]
Apache Tomcat/6.0.14