我刚刚部署了一个CometD项目，它在Jetty中正常工作到WAS 8.0.0.8。 应用程序安装并启动，但在启动时会在SystemOut.log中引发以下异常：
[26.08.14 13:35:06:062 CEST] 00000031 ServletWrappe E com.ibm.ws.webcontainer.servlet.ServletWrapper service Uncaught service() exception thrown by servlet cometd: java.lang.NoClassDefFoundError: org.eclipse.jetty.server.AbstractHttpConnection
at org.eclipse.jetty.websocket.WebSocketFactory.upgrade(WebSocketFactory.java:235)
at org.eclipse.jetty.websocket.WebSocketFactory.acceptWebSocket(WebSocketFactory.java:396)
at org.cometd.websocket.server.WebSocketTransport.handle(WebSocketTransport.java:106)
at org.cometd.server.CometdServlet.service(CometdServlet.java:165)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1230)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:779)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:136)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:97)
at org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:247)
at org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:210)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:960)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1064)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3774)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:981)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:453)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:515)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:306)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:277)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)ServletWrappeServletWrappe E com.ibm.ws.webcontainer.servlet.ServletWrapper service Uncaught service() exceptionServletWrappe E com.ibm.ws.webcontainer.servlet.ServletWrapper service Uncaught service() exception E com.ibm.ws.webcontainer.servlet.ServletWrapper service Uncaught service() exception
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)ServletWrappe E com.ibm.ws.webcontainer.servlet.ServletWrapper service Uncaught service() exception
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1702)
Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.server.AbstractHttpConnection
at java.net.URLClassLoader.findClass(URLClassLoader.java:434)
at com.ibm.ws.bootstrap.ExtClassLoader.findClass(ExtClassLoader.java:214)
at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:703)
at java.lang.ClassLoader.loadClass(ClassLoader.java:682)
at com.ibm.ws.bootstrap.ExtClassLoader.loadClass(ExtClassLoader.java:120)
at java.lang.ClassLoader.loadClass(ClassLoader.java:665)
at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:62)
at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:58)
at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:566)
at java.lang.ClassLoader.loadClass(ClassLoader.java:665)
at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:566)
at java.lang.ClassLoader.loadClass(ClassLoader.java:665)
... 36 more
应用程序似乎启动，连接到客户端，接收和发送消息然后停止。如果我刷新页面，也会发生同样的情况。
关于可能导致这种情况的任何想法？
编辑：为什么应用程序使用jetty.websocket？我使用cometD的原因是，我认为它不使用Websocket，因为版本8.5以下的WAS不支持这些。
编辑：这里是web.xml的内容
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<servlet>
<servlet-name>cometd</servlet-name>
<servlet-class>org.cometd.server.CometdServlet</servlet-class>
<init-param>
<param-name>transports</param-name>
<param-value>org.cometd.websocket.server.WebSocketTransport</param-value>
</init-param>
<async-supported>true</async-supported>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>cometd</servlet-name>
<url-pattern>/cometd/*</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>initializer</servlet-name>
<servlet-class>org.cometd.primer.BayeuxInitializer</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<filter>
<filter-name>cross-origin</filter-name>
<filter-class>org.eclipse.jetty.servlets.CrossOriginFilter</filter-class>
<async-supported>true</async-supported>
</filter>
<filter-mapping>
<filter-name>cross-origin</filter-name>
<url-pattern>/cometd/*</url-pattern>
</filter-mapping>
</web-app>
我的项目中不存在web-inf / lib文件夹。我用maven构建它。