On Wed, Oct 14, 2009 at 12:53 PM, Christopher Schultz
<ch...@christopherschultz.net> wrote:
> Is this happening in production,or only in development?
Development. A couple of words about my environment:
*) Mac OS/X 10.6.1
*) JDK 1.6.0_15
*) Tomcat 5.5.27
> I ask because each Class has a serialVersionId which essentially
> versions the Class. If you recompile the Class after making changes to
> any method signature, member, or even the order of these items, the
> version id changes and de-serialization fails.
>
> This often happens when you are working on the FooBean class, which has
> ab object stored in the session. You redeploy your webapp after
> deploying your new code, and Tomcat fails to re-load the session data
> because there is a Class mismatch between the data being loaded from the
> session and the Class available to the JVM.
>
> Could this be your problem?
I don't think so, because I don't redeploy anything before receiving
this exception:
SEVERE: Session: 6D026DD0479F48B331D28EE8325095BB;
java.lang.ClassNotFoundException: com.whatever.spikes.session.CustomClass
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:399)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:604)
at
org.apache.catalina.util.CustomObjectInputStream.resolveClass(CustomObjectInputStream.java:78)
at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at
org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1407)
at
org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:931)
at org.apache.catalina.session.FileStore.load(FileStore.java:296)
at
org.apache.catalina.session.StoreBase.processExpires(StoreBase.java:194)
at
org.apache.catalina.session.PersistentManagerBase.processExpires(PersistentManagerBase.java:553)
at
org.apache.catalina.session.ManagerBase.backgroundProcess(ManagerBase.java:664)
at
org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1285)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1570)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1579)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1579)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1559)
at java.lang.Thread.run(Thread.java:637)
> I have persistent sessions working just fine in Tomcat 5.5.26 with
> custom objects defined only in WEB-INF/classes.
Are you saying that you're using FileStore or PersistentStore with a
configuration like the following ones and it just works?
<Context path="/Spikes" reloadable="true"
docBase="/Users/mman/Workspaces/Spikes"
workDir="/Users/mman/Workspaces/Spikes/work" >
<Manager
className="org.apache.catalina.session.PersistentManager"
maxIdleBackup="0" >
<Store
className="org.apache.catalina.session.FileStore"
directory="/Users/mman/tmp/tomcat-sessions"/>
</Manager>
</Context>
If so, then I'm wondering what am I doing wrong...
Thanks
MM
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