<package name="myPackage" ....>
            ...
            <default-action-ref name="simpleViewResultAction">
            <!--
            An example of a default action that is just a simple class
            that has 3 fields: successUrl, errorUrl, and inputUrl.  This action
            parses the request url to set the result values.  In the normal case
            it just renders velocity results of the same name as the requested url.
            -->
            <action name="simpleViewResultAction" class="SimpleViewResultAction">
            <result type="velocity">${successUrl}</result>
            <result name="error" type="velocity">${errorUrl}</result>
            <result name="input" type="velocity">${inputUrl}</result>
            </action>
            ...
            </package>