Subject: Re: IOException while loading persisted sessions?? From: "Jack Gao" <[EMAIL PROTECTED]> === Well, I used to get same problem. And I think the problem is the Java Bean you stored in session doesn't implement Serializable interface.
I did some test on Jakarta-Tomcat-4.0.3, looks like tomcat 4.x can save the sessions even you shutdown it. Next time when you launch it, these sessions still available. Actually, it's a pretty cool feature. Tomcat 4.x implement this by Serializable interface, it assume that all the object stored in a session implement Serializable interface. So when you shutdown tomcat, it will write all object in the sessions to somewhere (_ directory under work directory I guess, but not sure.) by Serializable interface. So if you store any object in session that doesn't implement this interface, you will get this exception. To me, even I implement it, sometime I still get this exception. And I found that because I'm using log4j in my object. But Logger in log4j doesn't implement Serializaable interface. So I suggest you don't you Logger in your data storage bean. Actually, as I see, even you got this exception, it will not effect your application at all. Hope this can help. Jack "David E" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]... Can someone please give me a clue why I keep getting the following Exceptions in my jakarta-tomcat-4.0.1 log? The product class is not serializable it is persisted in a database?? Is it something with the Struts framework? I searched the archives, but couldn't find anything. Thanks in advance! 2002-03-31 19:35:43 StandardHost[localhost]: Installing web application at context path /regalos from URL file:C:\jakarta-tomcat-4.0.1\webapps\regalos 2002-03-31 19:35:43 WebappLoader[/regalos]: Deploying class repositories to work directory C:\jakarta-tomcat-4.0.1\work\localhost\regalos 2002-03-31 19:35:43 WebappLoader[/regalos]: Deploy JAR /WEB-INF/lib/struts.jar to C:\jakarta-tomcat-4.0.1\webapps\regalos\WEB-INF\lib\struts.jar 2002-03-31 19:35:43 StandardManager[/regalos]: Seeding random number generator class java.security.SecureRandom 2002-03-31 19:35:43 StandardManager[/regalos]: Seeding of random number generator has been completed 2002-03-31 19:35:43 StandardManager[/regalos] IOException while loading persisted sessions: java.io.WriteAbortedException: Writing aborted by exception; java.io.NotSerializableException: com.hp.mw.samples.struts.storefront.databeans.Product java.io.WriteAbortedException: Writing aborted by exception; java.io.NotSerializableException: com.hp.mw.samples.struts.storefront.databeans.Product at java.io.ObjectInputStream.readObject(ObjectInputStream.java:440) at java.io.ObjectInputStream.inputArray(ObjectInputStream.java:1137) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2258) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:514) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1407) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231) at org.apache.catalina.session.StandardSession.readObject(StandardSession.java: 1268) at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.j ava:810) at org.apache.catalina.session.StandardManager.load(StandardManager.java:411) at org.apache.catalina.session.StandardManager.start(StandardManager.java:617) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1104) at org.apache.catalina.core.StandardContext.start(StandardContext.java:3334) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:785) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:454) at org.apache.catalina.core.StandardHost.install(StandardHost.java:712) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:599) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:777) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:463) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppor t.java:155) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1131) at org.apache.catalina.core.StandardHost.start(StandardHost.java:612) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:307) at org.apache.catalina.core.StandardService.start(StandardService.java:388) at org.apache.catalina.core.StandardServer.start(StandardServer.java:505) at org.apache.catalina.startup.Catalina.start(Catalina.java:776) at org.apache.catalina.startup.Catalina.execute(Catalina.java:681) at org.apache.catalina.startup.Catalina.process(Catalina.java:179) at java.lang.reflect.Method.invoke(Native Method) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:243) 2002-03-31 19:35:43 StandardManager[/regalos] Exception loading sessions from persistent storage java.io.WriteAbortedException: Writing aborted by exception; java.io.NotSerializableException: com.hp.mw.samples.struts.storefront.databeans.Product at java.io.ObjectInputStream.readObject(ObjectInputStream.java:440) at java.io.ObjectInputStream.inputArray(ObjectInputStream.java:1137) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2258) at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:514) at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1407) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231) at org.apache.catalina.session.StandardSession.readObject(StandardSession.java: 1268) at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.j ava:810) at org.apache.catalina.session.StandardManager.load(StandardManager.java:411) at org.apache.catalina.session.StandardManager.start(StandardManager.java:617) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1104) at org.apache.catalina.core.StandardContext.start(StandardContext.java:3334) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:785) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:454) at org.apache.catalina.core.StandardHost.install(StandardHost.java:712) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:599) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:777) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:463) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppor t.java:155) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1131) at org.apache.catalina.core.StandardHost.start(StandardHost.java:612) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:307) at org.apache.catalina.core.StandardService.start(StandardService.java:388) at org.apache.catalina.core.StandardServer.start(StandardServer.java:505) at org.apache.catalina.startup.Catalina.start(Catalina.java:776) at org.apache.catalina.startup.Catalina.execute(Catalina.java:681) at org.apache.catalina.startup.Catalina.process(Catalina.java:179) at java.lang.reflect.Method.invoke(Native Method) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:243) -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
