Cannot recover objet in session between project in jdev

i have two project in a different workspace,
each project have many jsp pages.
i would like to recover the user name ( introduced and saved in a session object by the first project (in a jsp file)) in a jsp file located in the second project.
i resume :
project1,jsp1 =>i do this : session.setAttribute("user",user)
project2,jsp2 => String u = (String)session.getAttribute("user");
but it doesn't work; u is always null;
have someone any suggestions.
thanks.

Right-click the web.xml files in your projects. On the Security/Login tab choose HTTP Basic Authentication and fill the Realm with the same value for all projects. Then, if your projects are on the same machine, browsers will prompt for password only once.

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