The error you are getting is typically seen when ...

 * server somehow has a bad/old objectweb-asm.jar
 * from putting jetty classes into the WEB-INF/lib (bad idea, remove them)
 * from having a strange classloader configuration that inverts the
classloader priority improperly.

Meanwhile, let me see if I can whip up a quick webapp with that example
websocket in it and try it out.

--
Joakim Erdfelt <[email protected]>
webtide.com <http://www.webtide.com/> - intalio.com/jetty
Expert advice, services and support from from the Jetty & CometD experts
eclipse.org/jetty - cometd.org

On Fri, Nov 14, 2014 at 12:04 PM, Kiwi de coder <[email protected]> wrote:

> Standard i think.. WEB-INF/lib, however that is no jar file inside, as i
> support it will using javax.websocket.* from jetty server (like tomcat) the
> source is the only class file in the war.
> On Nov 15, 2014 2:51 AM, "Joakim Erdfelt" <[email protected]> wrote:
>
>> What is in your war's WEB-INF/lib directory?
>>
>> --
>> Joakim Erdfelt <[email protected]>
>> webtide.com <http://www.webtide.com/> - intalio.com/jetty
>> Expert advice, services and support from from the Jetty & CometD experts
>> eclipse.org/jetty - cometd.org
>>
>> On Fri, Nov 14, 2014 at 11:38 AM, Kiwi de coder <[email protected]>
>> wrote:
>>
>>> here the entire server logs:
>>>
>>>
>>> 2014-11-15 02:37:46.501:INFO:oejs.Server:main: jetty-9.2.5.v20141112
>>> 2014-11-15 02:37:46.535:INFO:oejdp.ScanningAppProvider:main: Deployment
>>> monitor [file:/C:/jetty/webapps/] at interval 1
>>> 2014-11-15 02:37:47.693:WARN:oejut.QueuedThreadPool:qtp21102086-21:
>>> java.lang.IncompatibleClassChangeError: class
>>> org.eclipse.jetty.annotations.AnnotationParser$MyClassVisitor has interface
>>> org.objectweb.asm.ClassVisitor as super class
>>> at java.lang.ClassLoader.defineClass1(Native Method)
>>> at java.lang.ClassLoader.defineClass(Unknown Source)
>>> at java.security.SecureClassLoader.defineClass(Unknown Source)
>>> at java.net.URLClassLoader.defineClass(Unknown Source)
>>> at java.net.URLClassLoader.access$100(Unknown Source)
>>> at java.net.URLClassLoader$1.run(Unknown Source)
>>> at java.net.URLClassLoader$1.run(Unknown Source)
>>> at java.security.AccessController.doPrivileged(Native Method)
>>> at java.net.URLClassLoader.findClass(Unknown Source)
>>> at java.lang.ClassLoader.loadClass(Unknown Source)
>>> at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
>>> at java.lang.ClassLoader.loadClass(Unknown Source)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.parseJarEntry(AnnotationParser.java:956)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:909)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:831)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:162)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:547)
>>> at
>>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:620)
>>> at
>>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:540)
>>> at java.lang.Thread.run(Unknown Source)
>>> 2014-11-15 02:37:47.694:WARN:oejut.QueuedThreadPool:qtp21102086-21:
>>> Unexpected thread death:
>>> org.eclipse.jetty.util.thread.QueuedThreadPool$3@75e5c2cc in
>>> qtp21102086{STARTED,10<=10<=200,i=8,q=0}
>>> 2014-11-15 02:37:47.693:WARN:oejut.QueuedThreadPool:qtp21102086-20:
>>> java.lang.IncompatibleClassChangeError:
>>> org/eclipse/jetty/annotations/AnnotationParser$MyClassVisitor
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:824)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:162)
>>> at
>>> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:547)
>>> at
>>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:620)
>>> at
>>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:540)
>>> at java.lang.Thread.run(Unknown Source)
>>> 2014-11-15 02:37:47.697:WARN:oejut.QueuedThreadPool:qtp21102086-20:
>>> Unexpected thread death:
>>> org.eclipse.jetty.util.thread.QueuedThreadPool$3@75e5c2cc in
>>> qtp21102086{STARTED,10<=10<=200,i=9,q=0}
>>> 2014-11-15 02:37:47.871:INFO:oejsh.ContextHandler:main: Started
>>> o.e.j.w.WebAppContext@37c4b9a5
>>> {/websocket,file:/C:/jetty/webapps/websocket/,AVAILABLE}{C:\jetty\webapps\websocket.war}
>>> 2014-11-15 02:37:47.898:INFO:oejs.ServerConnector:main: Started
>>> ServerConnector@7dbc244d{HTTP/1.1}{0.0.0.0:8080}
>>> 2014-11-15 02:37:47.899:INFO:oejs.Server:main: Started @2116ms
>>>
>>>
>>> On Sat, Nov 15, 2014 at 2:36 AM, Kiwi de coder <[email protected]>
>>> wrote:
>>>
>>>> Hi I try to run websocket on jetty-distribution-9.2.5.v20141112.
>>>>
>>>> here the code :
>>>>
>>>> +-----------------------
>>>>
>>>> package com.kiwi;
>>>>
>>>> import java.io.IOException;
>>>>
>>>> import javax.websocket.OnMessage;
>>>> import javax.websocket.Session;
>>>> import javax.websocket.server.ServerEndpoint;
>>>>
>>>> @ServerEndpoint("/echo")
>>>> public class EchoEndPoint
>>>> {
>>>> @OnMessage
>>>> public void onMessage(Session session, String message)
>>>> {
>>>> try {
>>>>  for (Session sess : session.getOpenSessions()) {
>>>>             if (sess.isOpen())
>>>>                sess.getBasicRemote().sendText(message);
>>>>          }
>>>>  } catch (IOException e) {
>>>> e.printStackTrace();
>>>> }
>>>> }
>>>>
>>>> }
>>>>
>>>> +---------------------------------
>>>>
>>>> what i really do is, package it as war file, and put in the webapps,
>>>> then run with
>>>>
>>>> java -jar C:\jetty-distribution-9.2.5.v20141112\start.jar
>>>> jetty.base=C:\jetty jetty.home=C:\jetty-distribution-9.2.5.v20141112 --a
>>>> dd-to-start=deploy,http,jvm,websocket
>>>>
>>>> then
>>>>
>>>> java -jar C:\jetty-distribution-9.2.5.v20141112\start.jar
>>>>
>>>>
>>>> however, i get the exception with start the server:
>>>>
>>>> 2014-11-15 02:27:04.113:WARN:oejut.QueuedThreadPool:qtp300837073-16:
>>>> java.lang.IncompatibleClassChangeError:
>>>> org/eclipse/jetty/annotations/Annotation
>>>> Parser$MyClassVisitor
>>>>         at
>>>> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationPa
>>>> rser.java:974)
>>>> ......
>>>>
>>>> my --list-config contain this :
>>>>
>>>> Jetty Active XMLs:
>>>> ------------------
>>>>  ${jetty.home}\etc\jetty.xml
>>>>  ${jetty.home}\etc\jetty-http.xml
>>>>  ${jetty.home}\etc\jetty-deploy.xml
>>>>  ${jetty.home}\etc\jetty-plus.xml
>>>>  ${jetty.home}\etc\jetty-annotations.xml
>>>>
>>>>
>>>>
>>>> I can run in tomcat 8,0.14 with no issue, do I forget to configure
>>>> something ?
>>>>
>>>> regards,
>>>> kiwi
>>>>
>>>>
>>>>
>>>>
>>>
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