title: session handling for request object in wicket framework
body: <p>1) i have added an element in request object given below, i need to get/read this in my webpage, how can i do it?</p>
  
  <pre><code>&lt;input type="hidden"&gt; wicket:id="submitted" value="false" /&gt;
  </code></pre>
  
  <p>eg: in servlet, use request.getParameter("submitted") from hidden session.</p>
  
  <p>2) in my controller class i want to set the value in session or hidden field, so that i can identify the user if he already processed the request or enetered my block of code.</p>