log4j看到的错误，hibernate3.1,这错误是什么呀！
[http-8080-1]   WARN     tuple.PojoEntityTuplizer   -   could   not   create   proxy   factory   for:com.crownsoft.qsm.vo.Log  
  org.hibernate.HibernateException:   CGLIB   Enhancement   failed:   com.crownsoft.qsm.vo.Log
at   org.hibernate.proxy.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:132)
at   org.hibernate.proxy.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:41)
at   org.hibernate.tuple.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:161)
at   org.hibernate.tuple.AbstractEntityTuplizer. <init> (AbstractEntityTuplizer.java:131)
at   org.hibernate.tuple.PojoEntityTuplizer. <init> (PojoEntityTuplizer.java:55)
at   org.hibernate.tuple.TuplizerLookup.create(TuplizerLookup.java:64)
at   org.hibernate.tuple.EntityMetamodel. <init> (EntityMetamodel.java:257)
at   org.hibernate.persister.entity.AbstractEntityPersister. <init> (AbstractEntityPersister.java:412)
at   org.hibernate.persister.entity.SingleTableEntityPersister. <init> (SingleTableEntityPersister.java:108)
at   org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at   org.hibernate.impl.SessionFactoryImpl. <init> (SessionFactoryImpl.java:216)
at   org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1176)
at   com.crownsoft.qsm.bean.DefaultSessionFactory.getSession(DefaultSessionFactory.java:9)
at   com.crownsoft.qsm.dao.ClassesDAO. <init> (ClassesDAO.java:19)
at   com.crownsoft.qsm.action.RegisterAction.execute(RegisterAction.java:49)
at   org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at   org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at   org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at   org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at   javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
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.ajaxanywhere.AAFilter.doFilter(AAFilter.java:46)
at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at   com.crownsoft.qsm.filter.CharSetFilter.doFilter(CharSetFilter.java:21)
at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at   org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
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:216)
at   org.apache.coyote.http11.Http11Processor.