IllegalArgumentException: setAttribute

answered 2006-05-05 07:52:26 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3715099

By: henrichen

It seemed that Tomcat was complaining that some object which is not serialiable was put into this method StandardSession.setAttribute() as argument.

Check the Tomcat API doc,

http://tomcat.apache.org/tomcat-5.0-doc/catalina/docs/api/org/apache/catalina/se
ssion/StandardSession.html#setAttribute(java.lang.String,%20java.lang.Object)

It says "java.lang.IllegalArgumentException - if an attempt is made to add a non-serializable object in an environment marked distributable."

So I think the keyword is "in an environment marked distributable."

/henri

answered 2006-05-05 07:55:39 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3715107

By: henrichen

I google "Tomcat+distributable", it seems that has something to do with clustering.
Did you set your Tomcat as a clustering environment?

/henri

answered 2006-05-05 08:01:41 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3715116

By: henrichen

It seems has something to do with an element, <distributable/> in Tomcat's conf/web.xml. Can you check that in your Tomcat?

/henri

answered 2006-05-05 08:16:28 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3715136

By: henrichen

Well, I misunderstood the meaning. The <distributable/> must be set at web application's web.xml, not Tomcat's conf/web.xml. Then that is strange, the zkdemo's web.xml got no such element at all.

Sebastian, can you ask this issue in Tomcat's forum?

/henri

answered 2006-05-06 01:57:13 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3716432

By: michaelkmb

Henri,

I think you are correct initially. If i add following in server.xml for Tomcat, <Context docBase="zkdemo" path="/zkdemo">
<Manager
className="org.apache.catalina.session.StandardManager"
distributable="true" />
</Context>
IllegalArgumentException throw on access zkdemo.
Set the "distributable" attribute to false, no error occurs.

However, you may check whether the SessionImpl class should implement serializable or not.

Michael

answered 2006-05-06 02:13:22 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3716441

By: michaelkmb

If you cannot modify server.xml, you can include the <Context> specification on context.xml and put it in directory zkdemo\META-INF. (check Tomcat documentaion for more details).

Michael

answered 2006-05-06 07:40:56 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3716577

By: henrichen

Hi Michael,

Thanks.

/henri

answered 2006-05-07 12:46:39 +0800

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Orignial message at:
https://sourceforge.net/forum/message.php?msg_id=3717586

By: henrichen

Sebastian,

Did your problem solved?

/henri