我通过 Eclipse Jetty Maven 插件 (9.1.0.M0) 使用嵌入式 Jetty。
我的插件中有以下配置pom.xml:
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>${version.jetty}</version>
<configuration>
<scanIntervalSeconds>10</scanIntervalSeconds>
<daemon>true</daemon>
<webApp>
<contextPath>/</contextPath>
<descriptor>${basedir}/src/test/webapp/WEB-INF/web.xml</descriptor>
</webApp>
<httpConnector>
<port>48080</port>
</httpConnector>
<stopPort>19081</stopPort>
<stopKey>53AS9DS1FD8E3WEFEW9GR1ER8G2ER0WE31</stopKey>
</configuration>
<executions>
<execution>
<id>jetty-start</id>
<phase>test-compile</phase>
<goals>
<goal>run</goal>
</goals>
</execution>
<execution>
<id>jetty-stop</id>
<phase>test</phase>
<goals>
<goal>stop</goal>
</goals>
</execution>
</executions>
</plugin>
当 Jetty 关闭时，我不断收到以下异常：
2013-09-27 04:51:08.309:WARN:oejuc.AbstractLifeCycle:Thread-68: FAILED WebSocketClient@873794597{FAILED,8<=8<=200,i=8,q=0}: java.lang.NoClassDefFoundError: org/eclipse/jetty/util/thread/QueuedThreadPool$1
java.lang.NoClassDefFoundError: org/eclipse/jetty/util/thread/QueuedThreadPool$1
at org.eclipse.jetty.util.thread.QueuedThreadPool.doStop(QueuedThreadPool.java:121)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:129)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:148)
at org.eclipse.jetty.websocket.client.WebSocketClient.doStop(WebSocketClient.java:263)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.thread.ShutdownThread.run(ShutdownThread.java:133)
Caused by:
java.lang.ClassNotFoundException: org.eclipse.jetty.util.thread.QueuedThreadPool$1
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.eclipse.jetty.util.thread.QueuedThreadPool.doStop(QueuedThreadPool.java:121)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:129)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:148)
at org.eclipse.jetty.websocket.client.WebSocketClient.doStop(WebSocketClient.java:263)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.thread.ShutdownThread.run(ShutdownThread.java:133)
2013-09-27 04:51:08.310:WARN:oejuc.AbstractLifeCycle:Thread-68: FAILED org.eclipse.jetty.websocket.client.WebSocketClient@34150c25: java.lang.NoClassDefFoundError: org/eclipse/jetty/util/thread/QueuedThreadPool$1
java.lang.NoClassDefFoundError: org/eclipse/jetty/util/thread/QueuedThreadPool$1
at org.eclipse.jetty.util.thread.QueuedThreadPool.doStop(QueuedThreadPool.java:121)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:129)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:148)
at org.eclipse.jetty.websocket.client.WebSocketClient.doStop(WebSocketClient.java:263)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.thread.ShutdownThread.run(ShutdownThread.java:133)
Caused by:
java.lang.ClassNotFoundException: org.eclipse.jetty.util.thread.QueuedThreadPool$1
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.eclipse.jetty.util.thread.QueuedThreadPool.doStop(QueuedThreadPool.java:121)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:129)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:148)
at org.eclipse.jetty.websocket.client.WebSocketClient.doStop(WebSocketClient.java:263)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.thread.ShutdownThread.run(ShutdownThread.java:133)
Exception in thread "Thread-68" java.lang.NoClassDefFoundError: org/eclipse/jetty/util/thread/QueuedThreadPool$1
at org.eclipse.jetty.util.thread.QueuedThreadPool.doStop(QueuedThreadPool.java:121)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:129)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:148)
at org.eclipse.jetty.websocket.client.WebSocketClient.doStop(WebSocketClient.java:263)
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:90)
at org.eclipse.jetty.util.thread.ShutdownThread.run(ShutdownThread.java:133)
Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.util.thread.QueuedThreadPool$1
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
... 7 more
我尝试过添加jetty-util作为插件的依赖项（以及项目）。这没有帮助，而且让我发疯。虽然构建确实通过了，但当 Jetty 在 Maven 构建结束时关闭时，我真的无法忍受看到这些错误。
请指教！提前谢谢了！
我建议您使用发行版本，例如9.0.5.v20130815，而不是您现在使用的里程碑（仍在开发中）9.1.0.M0
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