title: struts2 can't find action by wildcard when package extends from "json-default"
body: <p>I want struts actions to return JSON type of results, so I extend the package from "json-default", and specifically, I use wildcard to map actions.</p>
  
  <p>Struts works fine with wildcard when package extends from "struts-default".</p>
  
  <p>However, struts can't find actions by wildcard when package extends from "json-default", it reports:</p>
  
  <pre><code>There is no Action mapped for namespace [/ajax] and action name [query] associated with context path [/myapp].
  </code></pre>
  
  <p>Below is part of my struts.xml:</p>
  
  <pre><code>&lt;package name="ajax" namespace="/ajax" extends="json-default"&gt;
      &lt;action name="*" class="action.modifyAction" method="{1}"&gt;
          &lt;result type="json" name="success"&gt;
              &lt;param name="includeProperties"&gt;success&lt;/param&gt;
          &lt;/result&gt;
          &lt;result type="json" name="error"&gt;
              &lt;param name="includeProperties"&gt;success,errorMsg&lt;/param&gt;
          &lt;/result&gt;
      &lt;/action&gt;
  &lt;/package&gt;
  </code></pre>
  
  <p>Does package "json-default" not support wildcard, or do I have to add more configurations on my struts.xml?</p>
  
  <p>I'm using struts-core-2.5.13 and struts-json-plugin-2.5.13.</p>