get session attribute in velocity template
<p>I try to get session attribute in velocity template, spring boot
but I can't get session attribute.</p>

<pre><code>$!request.getParameter('user')
$request.getParameter('user')
#set ($user = $request.get('user'))
$user
$session.geAttribute('user')
$request.getSession().getAttribute('user')
</code></pre>

<p>I try to use theses.. but, I couldn't get right value.</p>

<p>How can I get session attribute in Velocity?</p>