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我遇到了一些hibernate代码的问题。我调用saveOrUpdate（）方法，每次尝试执行更新时，都会收到NullPointerException。第一次运行，第二次运行，第三次运行。这在更新上发生。我不刷新页面，重新发布服务器，什么都不是。这是我的代码。 session.getTransaction（）。commit（）;抛出异常。线。Hibernate saveOrUpdate（）每次更新时抛出nullPointerException
Session session = getSession();
session.beginTransaction();
session.saveOrUpdate(com);
session.getTransaction().commit();
我曾尝试在提交后执行session.flush（）和session.close（），但它没有帮助。
任何帮助将非常感激。
这里是堆栈跟踪....
[16/09/09 12:14:06:817 BST] 00000027 ServletWrappe E SRVE0068E: Uncaught exception thrown in one of the service methods of the servlet: JetspeedContainer. Exception thrown : java.lang.NullPointerException
at oracle.jdbc.dbaccess.DBData.clearItem(DBData.java:431)
at oracle.jdbc.dbaccess.DBDataSetImpl.clearItem(DBDataSetImpl.java:3528)
at oracle.jdbc.driver.OraclePreparedStatement.clearParameters(OraclePreparedStatement.java:3401)
at com.ibm.ws.rsadapter.jdbc.WSJdbcConnection.resetStatement(WSJdbcConnection.java:2369)
at com.ibm.ws.rsadapter.jdbc.WSJdbcConnection.prepareStatement(WSJdbcConnection.java:2020)
at com.ibm.ws.rsadapter.jdbc.WSJdbcConnection.prepareStatement(WSJdbcConnection.java:1972)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:497)
at org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:94)
at org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:87)
at org.hibernate.jdbc.AbstractBatcher.prepareBatchStatement(AbstractBatcher.java:218)
at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2289)
at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2242)
at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2542)
at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:297)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
at com.fmr.fc.portlet.communications.dao.impl.HibernateCommunicationsDAOImpl.createCommunication(HibernateCommunicationsDAOImpl.java:128)
at com.fmr.fc.portlet.communications.CommunicationsAdminPortlet.processAction(CommunicationsAdminPortlet.java:168)
at org.apache.jetspeed.factory.JetspeedPortletInstance.processAction(JetspeedPortletInstance.java:97)
at org.apache.jetspeed.container.JetspeedContainerServlet.doGet(JetspeedContainerServlet.java:258)
at org.apache.jetspeed.container.JetspeedContainerServlet.doPost(JetspeedContainerServlet.java:396)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:989)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:501)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:464)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:639)
at org.apache.jetspeed.container.invoker.ServletPortletInvoker.invoke(ServletPortletInvoker.java:273)
at org.apache.jetspeed.container.invoker.ServletPortletInvoker.action(ServletPortletInvoker.java:148)
at org.apache.pluto.PortletContainerImpl.processPortletAction(PortletContainerImpl.java:164)
at org.apache.jetspeed.container.JetspeedPortletContainerWrapper.processPortletAction(JetspeedPortletContainerWrapper.java:133)
at org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.invoke(ActionValveImpl.java:148)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.container.ContainerValve.invoke(ContainerValve.java:109)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at com.fmr.fcpf.util.PageHistoryValve.invoke(PageHistoryValve.java:161)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.profiler.impl.ProfilerValveImpl.invoke(ProfilerValveImpl.java:248)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.security.impl.LoginValidationValveImpl.invoke(LoginValidationValveImpl.java:159)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.localization.impl.LocalizationValveImpl.invoke(LocalizationValveImpl.java:170)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.security.impl.AbstractSecurityValve$1.run(AbstractSecurityValve.java:138)
at java.security.AccessController.doPrivileged(AccessController.java:215)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:645)
at org.apache.jetspeed.security.JSSubject.doAsPrivileged(JSSubject.java:179)
at org.apache.jetspeed.security.impl.AbstractSecurityValve.invoke(AbstractSecurityValve.java:132)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.container.url.impl.PortalURLValveImpl.invoke(PortalURLValveImpl.java:67)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.capabilities.impl.CapabilityValveImpl.invoke(CapabilityValveImpl.java:126)
at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at org.apache.jetspeed.pipeline.JetspeedPipeline.invoke(JetspeedPipeline.java:146)
at org.apache.jetspeed.engine.JetspeedEngine.service(JetspeedEngine.java:222)
at org.apache.jetspeed.engine.JetspeedServlet.doGet(JetspeedServlet.java:242)
at org.apache.jetspeed.engine.JetspeedServlet.doPost(JetspeedServlet.java:269)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:989)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:930)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at com.fmr.fc.common.authentication.ERLoginFilter.doFilter(ERLoginFilter.java:216)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.fmr.fc.common.authentication.FCLoginFilter.doFilter(FCLoginFilter.java:279)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.fmr.fc.common.authentication.CommonPortalFilter.doFilter(CommonPortalFilter.java:262)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:761)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:673)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:498)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:464)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:744)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1439)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:112)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:454)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:383)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469)
感谢您的回复，当我早些时候使用了错误代码时，我看到了这个问题，但我使用的是Oracle 10，Oracle JDBC驱动程序版本 - “10.2.0.2.0”。 当我执行delete（），save（），update（），saveOrUpdate（）以及是否通过手动获取会话并开始事务或使用hibernateTemplate时，会发生此问题。 – Caroline 2009-09-16 15:32:33
你确定这是你正在使用的版本吗？通过堆栈跟踪来判断，您正在运行WebSphere;它可以将自己的驱动程序拷贝放在某个地方。无论如何，最新的Oracle 10版本是10.2.0.4，并且修复了相当多的错误：http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/htdocs/readme_jdbc_10204.html考虑升级到它并看看它是否有帮助 – ChssPly76 2009-09-16 15:39:06
在进一步调查和完整搜索我的机器后，C：\ IBM \ SDP70 \ runtimes \ base_v61 \ lib中有9.0.2版本，但这不是我在java中的版本在RAD中构建轻拍。当我将版本10.0.2复制到lib时，我的服务器在发布项目时抛出回滚异常.... – Caroline 2009-09-17 10:02:45