Hello,
Sorry for the first mail I sent. I realize now that I
completly misunderstood what distributable is.
I realized it thanks to this link:
http://www.oreilly.com/catalog/jservlet2/chapter/ch12.html
And then better understood the Servlet Spec and these
2 links:
http://marc.theaimsgroup.com/?l=tomcat-user&m=97847365703731&w=2
http://marc.theaimsgroup.com/?l=tomcat-user&m=86951988715446&w=2
Xavier
--- Xavier Marjou <[EMAIL PROTECTED]> wrote:
> 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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