title: Get _csrf in spring controller
body: <p>How can I get _csrf object (?!) in spring controller? I've configured Spring Security and can get ${_csrf} request attribute in jsp files. 
  I've tried:</p>
  
  <pre><code>CsrfToken _csrf = (CsrfToken) session.getAttribute("CsrfToken");
  CsrfToken _csrf = (CsrfToken) session.getAttribute("_csrf");
  </code></pre>
  
  <p>the result is null;</p>
  
  <p>Thanks in advance!</p>