tomcat exception-error

[Nick15]

Hello people
I have an application that works ok, but when I execute tomcat this exception appeared, I don´t know why, This does not interfere with the functioning but I hate that it appears




14:36:22,921 ERROR ManagerBase:434 - IOException al cargar sesiones persistidas: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: Model.Miembro
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: Model.Miembro
at java.io.ObjectInputStream.readObject0(ObjectInputS tream.java:1309)
at java.io.ObjectInputStream.readObject(ObjectInputSt ream.java:348)
at java.util.ArrayList.readObject(ArrayList.java:591)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeReadObject(ObjectS treamClass.java:946)
at java.io.ObjectInputStream.readSerialData(ObjectInp utStream.java:1809)
at java.io.ObjectInputStream.readOrdinaryObject(Objec tInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputS tream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputSt ream.java:348)
at org.apache.catalina.session.StandardSession.readOb ject(StandardSession.java:1342)
at org.apache.catalina.session.StandardSession.readOb jectData(StandardSession.java:885)
at org.apache.catalina.session.StandardManager.doLoad (StandardManager.java:416)
at org.apache.catalina.session.StandardManager.load(S tandardManager.java:343)
at org.apache.catalina.util.CatalinaDigester.endEleme nt(CatalinaDigester.java:76)
at internal.parsers.XMLParser.parse(XMLParser.java:14 8)
at com.sun.org.apache.xerces.internal.parsers.Abstrac tSAXParser.parse(AbstractSAXParser.java:1242)
at org.apache.commons.digester.Digester.parse(Digeste r.java:1567)
at org.apache.catalina.core.StandardHostDeployer.inst all(StandardHostDeployer.java:488)
at org.apache.catalina.core.StandardHost.install(Stan dardHost.java:863)
at org.apache.catalina.startup.HostConfig.deployDescr iptors(HostConfig.java:483)
at org.apache.catalina.startup.HostConfig.deployApps( HostConfig.java:427)
at org.apache.catalina.startup.HostConfig.start(HostC onfig.java:983)
at org.apache.catalina.startup.HostConfig.lifecycleEv ent(HostConfig.java:349)
at org.apache.catalina.util.LifecycleSupport.fireLife cycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1091)
at org.apache.catalina.core.StandardHost.start(Standa rdHost.java:789)
at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1083)
sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootst rap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstr ap.java:425)
Caused by: java.io.NotSerializableException: Model.Miembro
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1081)
at java.io.ObjectOutputStream.writeObject(ObjectOutpu tStream.java:302)
at java.util.ArrayList.writeObject(ArrayList.java:569 )
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
ager.stop(StandardManager.java:687)
org.apache.catalina.core.StandardService.stop(Stan dardService.java:542)
at org.apache.catalina.core.StandardServer.stop(Stand ardServer.java:2347)
at org.apache.catalina.startup.Catalina.stop(Catalina .java:605)
at org.apache.catalina.startup.Catalina.start(Catalin a.java:580)
... 6 more


thanks you!
Nicholas

[levent]

Hello Nicholas,

As far as i see, you have Miembro class in Model package and it is not serializable. NotSerializableException exceptions seem to be thrown because of that. So to fix the problem, you may try to make your Miembro class serializable.

[Freddie]

When you download the Tomcat, it serialize the sessions and saves them, so when you run it has the information of sessions.
If you have not
serializables objects in the session , it through you the exception that you describe.
well, I hope that you understood my explanation
good luck