Well I have messed with the Engine, Host, Context, and Manager and cannot get
this exception to completely go away. The context I am currently working
with is:
<Context path="/bidnet" docBase="C:\devel\java\myProject\context" >
<Manager
pathname="C:\java\jakarta-tomcat-5.0.28\work\Catalina\localhost\myProject\SESSIONS.ser"
/>
</Context>
I originally thought that I needed a Persistent Manager in order to have the
sessions reload after a Tomcat restart, but I am pretty sure that I could
use the Standard Manager to accomplish this (as I am doing above). This
context will throw this exception when Tomcat is restarted and the session
is trying to be reloaded. It seems that the session is stored correctly -
as I can watch the file change as Tomcat is stopping. It is the same
exception as I wrote before.
Thoughts? Comments? Suggestions?
Thanks again
Dustin
Daniel Stephens wrote:
>
> Where is this class com.formos.toolkit.data.IPersis located? Is it in the
> WEB-INF/classes directory? or in a JAR? I guess I would want to first make
> sure the webapp classloaded loaded it up first.
>
>
>
> On 3/1/07, ddigmann <[EMAIL PROTECTED]> wrote:
>>
>>
>> A note before I start: I have found quite a few people out there asking
>> about
>> this same question but have not found my solution. This might mean I
>> have
>> trouble with finding the correct search terms or something entirely
>> different.
>>
>> The ultimate issue is that from time to time Tomcat (we are using v
>> 5.0.28
>> )
>> throws an exception while starting which we think causes sessions to be
>> lost
>> for our various users every time we research Tomcat. This is an issue
>> since
>> we would like the users to not loose data and be required to restart
>> whenever we need to restart the system. The exception is as follows:
>>
>> INFO: Starting Servlet Engine: Apache Tomcat/5.0.28
>> Mar 1, 2007 4:35:23 PM org.apache.catalina.core.StandardHost start
>> INFO: XML validation disabled
>> Mar 1, 2007 4:35:24 PM org.apache.catalina.session.StandardManager doLoad
>> SEVERE: ClassNotFoundException while loading persisted sessions:
>> java.lang.ClassNotFoundException: com.formos.toolkit.data.IPersistentDO
>> java.lang.ClassNotFoundException: com.formos.toolkit.data.IPersistentDO
>> at
>> org.apache.catalina.loader.StandardClassLoader.loadClass(
>> StandardClassLoader.java:854)
>> at
>> org.apache.catalina.loader.StandardClassLoader.loadClass(
>> StandardClassLoader.java:721)
>> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
>> at java.lang.Class.forName0(Native Method)
>> at java.lang.Class.forName(Class.java:242)
>> at
>> java.io.ObjectInputStream.resolveProxyClass(ObjectInputStream.java:646)
>> at
>> java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1494)
>> at
>> java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1457)
>> at
>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
>> at
>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
>> at
>> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
>> at
>> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
>> at
>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
>> at
>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
>> at java.io.ObjectInputStream.readObject(ObjectInputStream.java
>> :339)
>> at
>> org.apache.catalina.session.StandardSession.readObject(
>> StandardSession.java:1342)
>> at
>> org.apache.catalina.session.StandardSession.readObjectData(
>> StandardSession.java:885)
>> at
>> org.apache.catalina.session.StandardManager.doLoad(StandardManager.java
>> :416)
>> at
>> org.apache.catalina.session.StandardManager.load(StandardManager.java:343)
>> at
>> org.apache.catalina.session.StandardManager.start(StandardManager.java
>> :657)
>> at
>> org.apache.catalina.core.ContainerBase.setManager(ContainerBase.java:499)
>> at
>> org.apache.catalina.startup.ContextConfig.managerConfig(ContextConfig.java
>> :315)
>> at
>> org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:635)
>> at
>> org.apache.catalina.startup.ContextConfig.lifecycleEvent(
>> ContextConfig.java:216)
>> at
>> org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(
>> LifecycleSupport.java:119)
>> at
>> org.apache.catalina.core.StandardContext.start(StandardContext.java:4290)
>> at
>> org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
>> at
>> org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
>> at
>> org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
>> at
>> org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
>> at
>> org.apache.catalina.core.StandardService.start(StandardService.java:480)
>> at
>> org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
>> at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
>> 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:585)
>> at
>> org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
>> at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
>> Mar 1, 2007 4:35:25 PM org.apache.catalina.session.StandardManager start
>> SEVERE: Exception loading sessions from persistent storage
>> java.lang.ClassNotFoundException: com.formos.toolkit.data.IPersistentDO
>> at
>> org.apache.catalina.loader.StandardClassLoader.loadClass(
>> StandardClassLoader.java:854)
>> at
>> org.apache.catalina.loader.StandardClassLoader.loadClass(
>> StandardClassLoader.java:721)
>> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
>> at java.lang.Class.forName0(Native Method)
>> at java.lang.Class.forName(Class.java:242)
>> at
>> java.io.ObjectInputStream.resolveProxyClass(ObjectInputStream.java:646)
>> at
>> java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1494)
>> at
>> java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1457)
>> at
>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
>> at
>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
>> at
>> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
>> at
>> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
>> at
>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
>> at
>> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
>> at java.io.ObjectInputStream.readObject(ObjectInputStream.java
>> :339)
>> at
>> org.apache.catalina.session.StandardSession.readObject(
>> StandardSession.java:1342)
>> at
>> org.apache.catalina.session.StandardSession.readObjectData(
>> StandardSession.java:885)
>> at
>> org.apache.catalina.session.StandardManager.doLoad(StandardManager.java
>> :416)
>> at
>> org.apache.catalina.session.StandardManager.load(StandardManager.java:343)
>> at
>> org.apache.catalina.session.StandardManager.start(StandardManager.java
>> :657)
>> at
>> org.apache.catalina.core.ContainerBase.setManager(ContainerBase.java:499)
>> at
>> org.apache.catalina.startup.ContextConfig.managerConfig(ContextConfig.java
>> :315)
>> at
>> org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:635)
>> at
>> org.apache.catalina.startup.ContextConfig.lifecycleEvent(
>> ContextConfig.java:216)
>> at
>> org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(
>> LifecycleSupport.java:119)
>> at
>> org.apache.catalina.core.StandardContext.start(StandardContext.java:4290)
>> at
>> org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
>> at
>> org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
>> at
>> org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
>> at
>> org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
>> at
>> org.apache.catalina.core.StandardService.start(StandardService.java:480)
>> at
>> org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
>> at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
>> 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:585)
>> at
>> org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
>> at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
>>
>> I have been given the task to fix this and have come across the magical
>> world of <Context> and <Manager> which is where I think the solution
>> lies.
>>
>> Prior to any work on this task our <Context> in server.xml was as
>> follows:
>>
>> <Context path="/thisPath" reloadable="true"
>> docBase="C:\devel\java\thisPath\context"/>
>>
>> This method as I understand it will default to the Standard Manager
>> Implementation as described here:
>> http://tomcat.apache.org/tomcat-5.0-doc/config/manager.html
>>
>> This method saves sessions but not in a manner of saving them once Tomcat
>> has been restarted. The Persistent Manager Implementation sounds more
>> like
>> what I need to partake in. So I updated my server.xml to handle such a
>> method. It now looks like this in the <Context>:
>>
>> <Context path="/thisPath" reloadable="true"
>> docBase="C:\devel\java\thisPath\context">
>> <Manager
>> className="org.apache.catalina.session.PersistentManager"
>> saveOnRestart="true">
>> <Store
>> className="org.apache.catalina.session.FileStore"/>
>> </Manager>
>> </Context>
>>
>> This method should save the sessions in a manner of FileStore (to disk)
>> after Tomcat has be restarted. Here is where my current problem is. I
>> think the sessions are being written just fine when I stop Tomcat. When
>> I
>> restart it, the log seems just fine (no unusual messages). Then when I
>> start reusing the app for a session that should be saved, I get this
>> exception:
>>
>> INFO: Server startup in 6859 ms
>> Mar 1, 2007 4:22:31 PM org.apache.catalina.session.PersistentManagerBase
>> swapIn
>> SEVERE: Error deserializing Session A9B8C8714E8DC421692B63CA531873AD:
>> java.lang.ClassNotFoundException: com.formos.toolkit.data.IPersistentDO
>> Mar 1, 2007 4:22:31 PM org.apache.coyote.tomcat5.CoyoteAdapter service
>> SEVERE: An exception or error occurred in the container during the
>> request
>> processing
>> java.lang.IllegalStateException: Error deserializing Session
>> A9B8C8714E8DC421692B63CA531873AD: java.lang.ClassNotFoundException:
>> com.formos.toolkit.data.IPersis
>> tentDO
>> at
>> org.apache.catalina.session.PersistentManagerBase.swapIn(
>> PersistentManagerBase.java:805)
>> at
>> org.apache.catalina.session.PersistentManagerBase.findSession(
>> PersistentManagerBase.java:629)
>> at
>> org.apache.coyote.tomcat5.CoyoteRequest.doGetSession(CoyoteRequest.java
>> :2252)
>> at
>> org.apache.coyote.tomcat5.CoyoteRequest.getSession(CoyoteRequest.java
>> :2116)
>> at
>> org.apache.coyote.tomcat5.CoyoteRequestFacade.getSession(
>> CoyoteRequestFacade.java:526)
>> at
>> org.apache.catalina.authenticator.AuthenticatorBase.getSession(
>> AuthenticatorBase.java:692)
>> at
>> org.apache.catalina.authenticator.AuthenticatorBase.getSession(
>> AuthenticatorBase.java:675)
>> at
>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(
>> AuthenticatorBase.java:423)
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(
>> StandardValveContext.java:102)
>> at
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java
>> :520)
>> at
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
>> :137)
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(
>> StandardValveContext.java:104)
>> at
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
>> :118)
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(
>> StandardValveContext.java:102)
>> at
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java
>> :520)
>> at
>> org.apache.catalina.core.StandardEngineValve.invoke(
>> StandardEngineValve.java:109)
>> at
>> org.apache.catalina.core.StandardValveContext.invokeNext(
>> StandardValveContext.java:104)
>> at
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java
>> :520)
>> at
>> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
>> at
>> org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
>> at
>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
>> at
>>
>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection
>> (Http11Protocol.java:705)
>> at
>> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
>> at
>> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(
>> ThreadPool.java:683)
>> at java.lang.Thread.run(Thread.java:595)
>>
>> I was wondering if I was on the right path or just way off. Either way,
>> can
>> anybody see what I am doing wrong here? I would really appreciate any
>> feedback anybody could give me.
>>
>> Thank you for your time and energy.
>> Dustin
>> --
>> View this message in context:
>> http://www.nabble.com/Tomcat-Persistent-Session-Issues-tf3330946.html#a9262012
>> Sent from the Tomcat - User mailing list archive at Nabble.com.
>>
>>
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>>
>
>
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