Re: [JBoss-user] java.io.NotSerializableException need help
I add : it serializable even if it holds a reference to another instance that is not serializable, if this instance's class has a no-arg contructor. --hermann - Original Message - From: "Ole Husgaard" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, July 28, 2001 11:46 AM Subject: Re: [JBoss-user] java.io.NotSerializableException need help > Hi, > > An instance of a class implementing Serializable > can still be non-serializable at runtime, if it > holds a reference to another instance that is not > serializable at runtime. > See: http://java.sun.com/products/jdk/1.2/docs/guide/serialization/ > > > Best Regards, > > Ole Husgaard. > > > yan fan wrote: > > > > Yes , it did. > > --- Dmitri Colebatch <[EMAIL PROTECTED]> wrote: > > > Does com.arcsight.vssreport.VssReportItem implement > > > java.io.Serializable? It needs to. > > > > > > cheesr > > > dim > > > > > > On Thu, 26 Jul 2001, yan fan wrote: > > > > > > > I am runing jboss&tomcat , with servlet , BMP, and > > > > when I try to get a ArrayList(which inside is the > > > > VssReportItem object hold some properties) in BMP, > > > I > > > > get the exception :(please give me some hints, Thx > > > a > > > > lot) > > > > > > > > [VssReportB] java.io.NotSerializableException: > > > > com.arcsight.vssreport.VssReportItem > > > > > > > > > ___ > > > JBoss-user mailing list > > > [EMAIL PROTECTED] > > > > > http://lists.sourceforge.net/lists/listinfo/jboss-user > > > > __ > > Do You Yahoo!? > > Make international calls for as low as $.04/minute with Yahoo! Messenger > > http://phonecard.yahoo.com/ > > > > ___ > > JBoss-user mailing list > > [EMAIL PROTECTED] > > http://lists.sourceforge.net/lists/listinfo/jboss-user > > ___ > JBoss-user mailing list > [EMAIL PROTECTED] > http://lists.sourceforge.net/lists/listinfo/jboss-user > ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
Re: [JBoss-user] java.io.NotSerializableException need help
No, this is not likely the problem. If VssReportItem was Serializable but
had a reference to a non-Serializable class, then the exception you would
get would print out the name of the non-Serializable class. What is more
likely is that VssReportItem extends from a super class that is
non-Serializable that does not have a default constructor. Suppose you have
the following classes:
class NotSerializable() {
public NotSerializable(String s) {
...
}
}
class IThinkImSerializable extends NotSerializable implements Serializable
{
...
}
As it turns out, class IThinkImSerializable is actually NOT serializable,
because its parent class doesn't implement Serializable AND it doesn't have
a no-argument constructor. Two ways to fix this would be to:
1. Make NotSerializable implement Serializable
1. Give NotSerializable a public no-argument constructor - you probably
want to do this.
The Serialization protocol states that the FIRST non-Serializable class in
the class hierarchy that leads to a Serializable class must have a
no-argument constructor.
Alex
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| Subject: Re: [JBoss-user] java.io.NotSerializableException need help
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Hi,
An instance of a class implementing Serializable
can still be non-serializable at runtime, if it
holds a reference to another instance that is not
serializable at runtime.
See: http://java.sun.com/products/jdk/1.2/docs/guide/serialization/
Best Regards,
Ole Husgaard.
yan fan wrote:
>
> Yes , it did.
> --- Dmitri Colebatch <[EMAIL PROTECTED]> wrote:
> > Does com.arcsight.vssreport.VssReportItem implement
> > java.io.Serializable? It needs to.
> >
> > cheesr
> > dim
> >
> > On Thu, 26 Jul 2001, yan fan wrote:
> >
> > > I am runing jboss&tomcat , with servlet , BMP, and
> > > when I try to get a ArrayList(which inside is the
> > > VssReportItem object hold some properties) in BMP,
> > I
> > > get the exception :(please give me some hints, Thx
> > a
> > > lot)
> > >
> > > [VssReportB] java.io.NotSerializableException:
> > > com.arcsight.vssreport.VssReportItem
> >
> >
> > ___
> > JBoss-user mailing list
> > [EMAIL PROTECTED]
> >
> http://lists.sourceforge.net/lists/listinfo/jboss-user
>
> __
> Do You Yahoo!?
> Make international calls for as low as $.04/minute with Yahoo! Messenger
> http://phonecard.yahoo.com/
>
> ___
> JBoss-user mailing list
> [EMAIL PROTECTED]
> http://lists.sourceforge.net/lists/listinfo/jboss-user
___
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Re: [JBoss-user] java.io.NotSerializableException need help
Hi, An instance of a class implementing Serializable can still be non-serializable at runtime, if it holds a reference to another instance that is not serializable at runtime. See: http://java.sun.com/products/jdk/1.2/docs/guide/serialization/ Best Regards, Ole Husgaard. yan fan wrote: > > Yes , it did. > --- Dmitri Colebatch <[EMAIL PROTECTED]> wrote: > > Does com.arcsight.vssreport.VssReportItem implement > > java.io.Serializable? It needs to. > > > > cheesr > > dim > > > > On Thu, 26 Jul 2001, yan fan wrote: > > > > > I am runing jboss&tomcat , with servlet , BMP, and > > > when I try to get a ArrayList(which inside is the > > > VssReportItem object hold some properties) in BMP, > > I > > > get the exception :(please give me some hints, Thx > > a > > > lot) > > > > > > [VssReportB] java.io.NotSerializableException: > > > com.arcsight.vssreport.VssReportItem > > > > > > ___ > > JBoss-user mailing list > > [EMAIL PROTECTED] > > > http://lists.sourceforge.net/lists/listinfo/jboss-user > > __ > Do You Yahoo!? > Make international calls for as low as $.04/minute with Yahoo! Messenger > http://phonecard.yahoo.com/ > > ___ > JBoss-user mailing list > [EMAIL PROTECTED] > http://lists.sourceforge.net/lists/listinfo/jboss-user ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
Re: [JBoss-user] java.io.NotSerializableException need help
Yes , it did. --- Dmitri Colebatch <[EMAIL PROTECTED]> wrote: > Does com.arcsight.vssreport.VssReportItem implement > java.io.Serializable? It needs to. > > cheesr > dim > > On Thu, 26 Jul 2001, yan fan wrote: > > > I am runing jboss&tomcat , with servlet , BMP, and > > when I try to get a ArrayList(which inside is the > > VssReportItem object hold some properties) in BMP, > I > > get the exception :(please give me some hints, Thx > a > > lot) > > > > [VssReportB] java.io.NotSerializableException: > > com.arcsight.vssreport.VssReportItem > > > ___ > JBoss-user mailing list > [EMAIL PROTECTED] > http://lists.sourceforge.net/lists/listinfo/jboss-user __ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
Re: [JBoss-user] java.io.NotSerializableException need help
Does com.arcsight.vssreport.VssReportItem implement java.io.Serializable? It needs to. cheesr dim On Thu, 26 Jul 2001, yan fan wrote: > I am runing jboss&tomcat , with servlet , BMP, and > when I try to get a ArrayList(which inside is the > VssReportItem object hold some properties) in BMP, I > get the exception :(please give me some hints, Thx a > lot) > > [VssReportB] java.io.NotSerializableException: > com.arcsight.vssreport.VssReportItem ___ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] java.io.NotSerializableException need help
I am runing jboss&tomcat , with servlet , BMP, and when I try to get a ArrayList(which inside is the VssReportItem object hold some properties) in BMP, I get the exception :(please give me some hints, Thx a lot) [VssReportB] java.io.NotSerializableException: com.arcsight.vssreport.VssReportItem [VssReportB]at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1148) [VssReportB]at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366) [VssReportB]at java.rmi.MarshalledObject.(MarshalledObject.java:95) [VssReportB]at org.jboss.ejb.CacheKey.(CacheKey.java:58) [VssReportB]at org.jboss.ejb.plugins.EntityInstanceCache.createCacheKey(EntityInstanceCache.java:47) [VssReportB]at org.jboss.ejb.plugins.BMPPersistenceManager.findEntities(BMPPersistenceManager.java:251) [VssReportB]at org.jboss.ejb.EntityContainer.find(EntityContainer.java:39 2) [VssReportB]at java.lang.reflect.Method.invoke(Native Method) [VssReportB]at org.jboss.ejb.EntityContainer$ContainerInterceptor.invokeHome(EntityContainer.java:639) [VssReportB]at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invokeHome(EntitySynchronizationInterceptor.java:160) [VssReportB]at org.jboss.ejb.plugins.EntityInstanceInterceptor.invokeHome(EntityInstanceInterceptor.java:87) [VssReportB]at org.jboss.ejb.plugins.TxInterceptorCMT.invokeNext(TxInterceptorCMT.java:135) [VssReportB]at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:263) [VssReportB]at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:86) [VssReportB]at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:164) [VssReportB]at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:106) [VssReportB]at org.jboss.ejb.EntityContainer.invokeHome(EntityContainer.java:316) [VssReportB]at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invokeHome(JRMPContainerInvoker.java:436) [VssReportB]at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invoke(HomeProxy.java:212) [VssReportB]at $Proxy6.findAllByTime(Unknown Source) [VssReportB]at com.arcsight.vssreport.ejb.TrackproEJB.getAllVssReport(TrackproEJB.java:171) [VssReportB]at java.lang.reflect.Method.invoke(Native Method) [VssReportB]at org.jboss.ejb.StatefulSessionContainer$ContainerInterceptor.invoke(StatefulSessionContainer.java:570) [VssReportB]at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:190) [VssReportB]at org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor.invoke(StatefulSessionInstanceInterceptor.java:209) [VssReportB]at org.jboss.ejb.plugins.TxInterceptorCMT.invokeNext(TxInterceptorCMT.java:133) [VssReportB]at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:263) [VssReportB]at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:99) [VssReportB]at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:195) [VssReportB]at org.jboss.ejb.StatefulSessionContainer.invoke(StatefulSessionContainer.java:326) [VssReportB]at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke(JRMPContainerInvoker.java:482) [VssReportB]at org.jboss.ejb.plugins.jrmp.interfaces.StatefulSessionProxy.invoke(StatefulSessionProxy.java:150) [VssReportB]at $Proxy5.getAllVssReport(Unknown Source) [VssReportB]at com.arcsight.vssreport.web.VssServlet.doPost(VssServlet.java:94) [VssReportB]at javax.servlet.http.HttpServlet.service(HttpServlet.java:76 0) [VssReportB]at javax.servlet.http.HttpServlet.service(HttpServlet.java:85 3) [VssReportB]at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405) [VssReportB]at org.apache.tomcat.core.Handler.service(Handler.java:287) [VssReportB]at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) [VssReportB]at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797) [VssReportB]at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743) [VssReportB]at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213) [VssReportB]at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) [VssReportB]at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501) [VssReportB]at java.lang.Thread.run(Thread.java:484) [VssReportB] java.io.NotSerializableException: com.arcsight.vssreport.VssRepo rtItem [VssReportB]at java.io.ObjectOutputStream.outputObject(ObjectOutputStream .java:1148) [VssReportB]at java.io.ObjectOutputStream.writeObject(ObjectOutputStream. java:366) [VssReportB]at java.rmi.MarshalledObject.(MarshalledObject.java:95) [VssReportB]at org.jboss.ejb.CacheKey.(CacheKey.java:58) [VssReportB]at org.jboss.ejb.plugins.EntityInstanceCache.createCacheKey(EntityInstanceCache.java:47) [Vss
