Struts Plugin

JoeCritter · **Posted:** Sun Nov 23, 2003 5:37 am

I'm using a Hibernate Struts Plugin that is more or less the same as authored by Ted Husted in his Struts-Hibernate example.

I'm getting the occasional exception thrown when I restart Tomcat. It doesn't seem to affect anything, but I'd _really_ would like to know what is happening and why.

TIA

Exception follows

Code:

04:26:12,853  WARN SessionFactoryObjectFactory:148 - Not found: 8a8a818af907e80d00f907e8194f0000

04:26:12,869  WARN SessionFactoryObjectFactory:138 - Not found: null

StandardManager[]: IOException while loading persisted sessions: java.io.InvalidObjectException: Could not find a SessionFactory named: null

java.io.InvalidObjectException: Could not find a SessionFactory named: null

   at net.sf.hibernate.impl.SessionFactoryImpl.readResolve(SessionFactoryImpl.java:505)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:911)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1655)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)

   at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:452)

   at net.sf.hibernate.impl.SessionImpl.readObject(SessionImpl.java:333)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:824)

   at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)

   at java.util.HashMap.readObject(HashMap.java:986)

   at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:824)

   at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)

   at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)

   at org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1357)

   at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:852)

   at org.apache.catalina.session.StandardManager.load(StandardManager.java:411)

   at org.apache.catalina.session.StandardManager.start(StandardManager.java:626)

   at org.apache.catalina.core.StandardContext.start(StandardContext.java:3496)

   at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:821)

   at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)

   at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:579)

   at org.apache.catalina.core.StandardHostDeployer.addChild(StandardHostDeployer.java:529)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:228)

   at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:260)

   at org.apache.commons.digester.Digester.endElement(Digester.java:1036)

   at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1536)

   at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:500)

   at org.apache.crimson.parser.Parser2.parse(Parser2.java:305)

   at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:442)

   at org.apache.commons.digester.Digester.parse(Digester.java:1514)

   at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:335)

   at org.apache.catalina.core.StandardHost.install(StandardHost.java:803)

   at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:452)

   at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:409)

   at org.apache.catalina.startup.HostConfig.start(HostConfig.java:879)

   at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:368)

   at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:166)

   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1196)

   at org.apache.catalina.core.StandardHost.start(StandardHost.java:738)

   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1188)

   at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:347)

   at org.apache.catalina.core.StandardService.start(StandardService.java:497)

   at org.apache.catalina.core.StandardServer.start(StandardServer.java:2189)

   at org.apache.catalina.startup.Catalina.start(Catalina.java:510)

   at org.apache.catalina.startup.Catalina.execute(Catalina.java:400)

   at org.apache.catalina.startup.Catalina.process(Catalina.java:180)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:203)

StandardManager[]: Exception loading sessions from persistent storage

java.io.InvalidObjectException: Could not find a SessionFactory named: null

   at net.sf.hibernate.impl.SessionFactoryImpl.readResolve(SessionFactoryImpl.java:505)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:911)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1655)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)

   at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:452)

   at net.sf.hibernate.impl.SessionImpl.readObject(SessionImpl.java:333)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:824)

   at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)

   at java.util.HashMap.readObject(HashMap.java:986)

   at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:824)

   at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)

   at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)

   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)

   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)

   at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)

   at org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1357)

   at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:852)

   at org.apache.catalina.session.StandardManager.load(StandardManager.java:411)

   at org.apache.catalina.session.StandardManager.start(StandardManager.java:626)

   at org.apache.catalina.core.StandardContext.start(StandardContext.java:3496)

   at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:821)

   at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)

   at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:579)

   at org.apache.catalina.core.StandardHostDeployer.addChild(StandardHostDeployer.java:529)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:228)

   at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:260)

   at org.apache.commons.digester.Digester.endElement(Digester.java:1036)

   at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1536)

   at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:500)

   at org.apache.crimson.parser.Parser2.parse(Parser2.java:305)

   at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:442)

   at org.apache.commons.digester.Digester.parse(Digester.java:1514)

   at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:335)

   at org.apache.catalina.core.StandardHost.install(StandardHost.java:803)

   at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:452)

   at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:409)

   at org.apache.catalina.startup.HostConfig.start(HostConfig.java:879)

   at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:368)

   at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:166)

   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1196)

   at org.apache.catalina.core.StandardHost.start(StandardHost.java:738)

   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1188)

   at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:347)

   at org.apache.catalina.core.StandardService.start(StandardService.java:497)

   at org.apache.catalina.core.StandardServer.start(StandardServer.java:2189)

   at org.apache.catalina.startup.Catalina.start(Catalina.java:510)

   at org.apache.catalina.startup.Catalina.execute(Catalina.java:400)

   at org.apache.catalina.startup.Catalina.process(Catalina.java:180)

   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

   at java.lang.reflect.Method.invoke(Method.java:324)

   at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:203)

ivo.houbrechts · **Joined:** Thu Nov 06, 2003 8:28 am **Posts:** 8

I guess you store your Hibernate Session in your HTTPSession?
When you shut down Tomcat while having an open HTTP session (open browser), Tomcat will serialize the session and deserialize it on the next startup. It seems that the SessionFactoryObjectFactory can't be deserialised correctly (maybe because at that point Hibernate isn't yet initialized?)