title: multipart form data getParameter doesn't work
body: <p>I am trying to send files with some text to the server using HTML like this:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  
  &lt;head&gt;
    &lt;title&gt;File Uploading Form&lt;/title&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
    &lt;h3&gt;File Upload:&lt;/h3&gt;
    Select a file to upload: &lt;br /&gt;
    &lt;form action="UploadServlet" method="post" enctype="multipart/form-data"&gt;
      &lt;input type="file" name="file" size="50" /&gt;
      &lt;input type="hidden" name="someText" value="3" /&gt;
      &lt;input type="text" value="Upload File" /&gt;
    &lt;/form&gt;
  &lt;/body&gt;
  
  &lt;/html&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Now I'm trying to get it in servlet using request.getParameter("someText"). but it returns null? any suggestions or solution?</p>