title: Get value of <select> in servlet
body: <p>I have:</p>
  
  <pre><code>&lt;select id="isTitles"&gt;
      &lt;option value="true"&gt;enable&lt;/option&gt;
      &lt;option value="false"&gt;disable&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>on my index.jsp. And I would like to know what had been chosen:</p>
  
  <pre><code>response.getWriter().write( "User chose: " + request.getAttribute( "isTitles" ) );
  </code></pre>
  
  <p>But I've got "User chose: null"... = (</p>