title: Callback not executing from jQuery post
body: <p>I'm having problems executing the call back function.</p>
  <pre><code>$.post(&quot;/&quot; + contentId + &quot;/postComment&quot;, {
      &quot;postComment&quot;: &quot;&quot;
  }, function(data) {
      alert('call back');
  });
  </code></pre>
  <p>This post does take place. The alert is not called, however.</p>
  <p>This post results in some <code>xml</code> returned. I can't tell exactly how it looks because I'm using <strong>Spring</strong> mappings of <code>application/xml</code> together with <code>@RequestBody</code> and I just don't know what Spring does to what I'm returning. I'm saying this just in case the contents of server response can affect the call back somehow.</p>
  <p><em><strong>The question is:</strong></em></p>
  <h3>what do I need to do to see that alert in my code example?</h3>