Your servlets belong to 2 different contexts, moreover - jvms ... sessions are
defined per context ...
hth
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>
>Hello,
>
>I've read on this list that Tomcat 3.2 supports
>serializing sessions attributes. I wanted to try it,
>but could not find more information on the subject
>here. So I tried to do it according to the servlet 2.2
>specification. As it is not working, I try to sum-up
>here what I've done:
>
>I have installed 2 Tomcat 3.2 on the same machine
>(taking care that the 2nd Tomcat starts on port 8081),
>and for each of them, I have built a very simple
>"session" webapp :
>- session/
> - WEB-APP/
> web.xml
> - classes/
> SessionServlet.class
>
>The web.xml looks like:
><?xml version="1.0" encoding="ISO-8859-1"?>
><!DOCTYPE web-app
> PUBLIC "-//Sun Microsystems, Inc.//DTD Web
>Application 2.2//EN"
> "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd";>
>
> <web-app>
> <distributable>
> </distributable>
> <servlet>
> <servlet-name>session</servlet-name>
>
><servlet-class>SessionServlet</servlet-class>
> </servlet>
> <servlet-mapping>
> <servlet-name>session</servlet-name>
> <url-pattern>/session</url-pattern>
> </servlet-mapping>
> </web-app>
>
>
>For the firt Tomcat, I compiled:
>import java.io.*;
>import javax.servlet.*;
>import javax.servlet.http.*;
>public class SessionServlet extends HttpServlet {
> public void doGet (HttpServletRequest req,
>HttpServletResponse res)
> throws ServletException, IOException
> {
> ServletOutputStream out = res.getOutputStream();
> res.setContentType("text/plain");
> out.println("SessionServlet 1 output");
>
> ServletContext servletContext =
>this.getServletContext();
> servletContext.setAttribute("foo","abcdef..foo");
> out.println("attribute foo, with value
>"abcde...foo", added in ServletContext");
>
> HttpSession httpSession = req.getSession();
> httpSession.setAttribute("bar","abcde...bar");
> out.println("attribute bar, with value
>"abcde...bar", added in HttpSession");
>
> out.close();
> }
>}
>
>For the second Tomcat, I compiled:
>import java.io.*;
>import javax.servlet.*;
>import javax.servlet.http.*;
>public class SessionServlet extends HttpServlet {
> public void doGet (HttpServletRequest req,
>HttpServletResponse res)
> throws ServletException, IOException
> {
> ServletOutputStream out = res.getOutputStream();
>
> res.setContentType("text/plain");
> out.println("SessionServlet 2 Output");
>
> ServletContext servletContext =
>this.getServletContext();
> String foo = (String)
>servletContext.getAttribute("foo");
> out.println("foo="+ foo +" (get from
>ServletContext)");
>
> HttpSession httpSession = req.getSession();
> String bar = (String)
>httpSession.getAttribute("bar");
> out.println("bar="+ bar +" (get from
>HttpSession)");
>
> out.close();
> }
>}
>
>Requesting respectively the first servlet, and the
>second serlvet did not give the expected results:
>
>http://127.0.0.1:8080/session/servlet/SessionServlet
>SessionServlet 1 output
>attribute foo, with value "abcde...foo", added in
>ServletContext
>attribute bar, with value "abcde...bar", added in
>ServletContext
>
>http://127.0.0.1:8081/session/servlet/SessionServlet
>SessionServlet 2 Output
>foo=null (get from ServletContext)
>bar=null (get from HttpSession)
>
>
>So did I made a mistake, did I forget something, or is
>it simply not possible to do it ?
>Thanks for any help !
>
>Xavier Marjou
>
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