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    copied!<p>Just did this with spring and velocity:</p> <p>I had problems getting velocity to pick up my event handler, in the end specifying it in the servlet xml file:</p> <pre><code>&lt;bean id="velocityConfig" class="org.springframework.web.servlet.view.velocity.VelocityConfigurer"&gt; &lt;property name="resourceLoaderPath" value="WEB-INF/templates"/&gt; &lt;property name="velocityPropertiesMap"&gt; &lt;map&gt; &lt;entry key="eventhandler.include.class"&gt;&lt;value&gt;com.velocity.events.OptionalIncludeEventHandler&lt;/value&gt;&lt;/entry&gt; &lt;/map&gt; &lt;/property&gt; &lt;/bean&gt; </code></pre> <p>It simply would not accept me putting it in the properties file - it would instantiate the class, but not register it as an event listener. very frustrating.</p> <p>The class itself is simple, a quite blatant rip off from the existing velocity class "org.apache.velocity.app.event.implementIncludeNotFound". The existing velocity implementation checks for the existance of the file, and if not present returns a configurable alternative (default: notfound.vm). </p> <p>Mine is exactly the same except it returns null if the file does not exist, causing the parser to skip this include / parse directive:</p> <pre><code>public class OptionalIncludeEventHandler implements IncludeEventHandler, RuntimeServicesAware { private RuntimeServices rs; @Override public void setRuntimeServices(RuntimeServices rs) { this.rs = rs; } @Override public String includeEvent(String includeResourcePath, String currentResourcePath, String directiveName) { return rs.getLoaderNameForResource(includeResourcePath) != null ? includeResourcePath : null; } } </code></pre> <p>Works like a charm.</p> <p>Hope it's useful.</p>
 

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