通过eclipse插件启动应用程序时出现以下异常：“运行方式”>“带有码头的GWT开发模式”
环境：
-GWT
SDK 2.8-
春季启动1.5.2.RELEASE-
码头9.4.2
-GWT Eclipse插件3.0.0
上下文：将GWT 2.6应用程序迁移到GWT 2.8，并使用
由GWT webAppCreator生成的spring-boot 应用程序pom
这是堆栈跟踪：
**Exception in thread "main" java.lang.NoSuchMethodError:
org.eclipse.jetty.websocket.server.WebSocketServerFactory.<init>(Ljavax/servlet/ServletContext;)V**
at org.eclipse.jetty.websocket.server.NativeWebSocketConfiguration.<init>(NativeWebSocketConfiguration.java:53)
at org.eclipse.jetty.websocket.server.NativeWebSocketServletContainerInitializer.getDefaultFrom(NativeWebSocketServletContainerInitializer.java:36)
at org.eclipse.jetty.websocket.server.NativeWebSocketServletContainerInitializer.onStartup(NativeWebSocketServletContainerInitializer.java:46)
at org.eclipse.jetty.plus.annotation.ContainerInitializer.callStartup(ContainerInitializer.java:140)
at org.eclipse.jetty.annotations.ServletContainerInitializersStarter.doStart(ServletContainerInitializersStarter.java:63)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:329)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1480)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1442)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:799)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:261)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:540)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:550)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
at org.eclipse.jetty.server.Server.start(Server.java:452)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
at org.eclipse.jetty.server.Server.doStart(Server.java:419)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:759)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:634)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:923)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:706) …通过eclipse插件启动应用程序时出现以下异常：“运行方式”>“带有码头的GWT开发模式”
环境：
-GWT
SDK 2.8-
春季启动1.5.3.RELEASE-
码头9.4.4
-GWT Eclipse插件3.0.0
堆栈跟踪：
11:50:51,971 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
11:50:51,971 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
11:50:51,971 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@4c292313 - Registering current configuration as safe fallback point
Loading Java files in com.mycompany.fonems.webapp.Fonemswebapp.
Ignored 1 unit with compilation errors in first pass.
Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.
Module setup completed in 6335 ms
The code server …