title: Struts 2 empty string action
body: <p>Using Struts2, does an empty string in action do anything when a  is submittefd
  How would this form get posted?</p>
  
  <pre><code>&lt;s:form action="" method="POST" namespace="mynamespace" onSubmit="return false;"&gt;&lt;/s:form&gt;
  </code></pre>