BayeuxServer Configuraion for Wicket Stuff Cometd？

Question

CometdPushService.get（）抛出NullPointerException

<dependency>
        <groupId>org.wicketstuff</groupId>
        <artifactId>wicketstuff-push-cometd</artifactId>
        <version>7.0.0-M5</version>
    </dependency>

TimerPushService.get（）作为例外工作但想使用Cometd来管理带宽。

java.lang.NullPointerException
 at org.wicketstuff.push.cometd.CometdPushService.<init>(CometdPushService.java:133)
 at org.wicketstuff.push.cometd.CometdPushService.get(CometdPushService.java:107)
 at org.wicketstuff.push.cometd.CometdPushService.get(CometdPushService.java:97)

发现这篇好文章https://groups.google.com/forum/#!topic/cometd-users/Kn13KSHqrAw但是在启动时失败了

java.lang.NoClassDefFoundError: org/eclipse/jetty/util/thread/Timeout
at org.cometd.server.BayeuxServerImpl.<init>(BayeuxServerImpl.java:89)
at com.erranda.prototype.WebsocketConfiguration.bayeuxServer(WebsocketConfiguration.java:78)
at com.erranda.prototype.WebsocketConfiguration$$EnhancerBySpringCGLIB$$9e079365.CGLIB$bayeuxServer$4(<generated>)
at com.erranda.prototype.WebsocketConfiguration$$EnhancerBySpringCGLIB$$9e079365$$FastClassBySpringCGLIB$$44de86de.invoke(<generated>)