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Subject: Tomcat 5 Clustering
Date: Tue, 16 Dec 2003 13:37:56 -0500
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Thread-Topic: Tomcat 5 Clustering
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From: "Pitre, Russell" <RPITRE@shawmut.com>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
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Hello All:

=20

Please excuse my ignorance, I'm trying to achieve clustering with Tomcat
5....I've read the following in the Tomcat 5 documentation:

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D

To run session replication in your Tomcat 5 container, the following
steps should be completed:
    -->All your session attributes must implement java.io.Serializable=20

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D

=20

Okay. I've completed all the other steps (uncomment the <Cluster>
element along with the <valve>, and added the <distributable/> in
web.xml)........I'm trying to code a simple object that implements
java.io.Serializable to store in a session and here it is.....

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package com.shawmut.session;

import java.io.Serializable;

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public class SerializeSession implements Serializable {

           =20

            public static String testString  =3D "";

=20

            public void setString(String stringValue){

                        this.testString =3D stringValue;

            }

            public String getString(){

                        return this.testString;

            }

}

=20

ok.....Now I want to put this in the session.....

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<%

            if(session.getAttribute("ss")=3D=3D null){

                        SerializeSession ss =3D new SerializeSession();

                        ss.setString("Booooooooooooooo! And I created my
session on Tomcat 1 Node");

                        session.setAttribute("ss", ss);

            }

%>

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=20

=20

=20

Whats going on here?.....I unplug the patch cord ( docs says it's a bad
idea) from one of the boxes and hit a jsp on the working node that does
the following......and the session doesn't carry over to the working
node....

=20

<%

if(session.getAttribute("ss")!=3D null){

            SerializeSession ss2 =3D
(SerializeSession)session.getAttribute("ss");

%>

SESSION:<%=3Dss2.getString()%>

=20

<%

}          =20

%>

=20

=20

=20

Basically what I'm looking for is an example of serializing session
attributes as noted above.... Any Help here will be greatly
appreciated......

=20

=20

Russ

=20

=20

=20


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