Error scanning file GWT29_JDK11.class
at
org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
This error should be fixed with GWT 2.10.0, or by disabling the
annotation-based servlet configurations. A very similar issue is discussed
at https://github.com/gwtproject/gwt/issues/9606.
Alternatively, strongly consider dividing client and server classpaths, and
only using DevMode (or better, CodeServer) to serve your GWT client
content, and use your intended servlet container for server code. Doing so
will avoid this and many other issues, which stem from the Jetty in dev
mode being configured and updated for the purposes of DevMode first and
foremost.
On Tuesday, February 7, 2023 at 4:32:08 PM UTC-6 hprc wrote:
> no
>
> I have confirmed that it works only with Java8 + GWT sdk 2.8 or 2.9.
>
> When using JDK17, the following error is displayed.
> It's been discussed in the thread, but I think it's probably a problem
> with Jetty's JDK support.
> I don't understand the details.
>
> The stack trace is shown below.
>
> *********************************************************************************************************
> Running CodeServer with parameters: [-noprecompile, -port, 9876,
> -sourceLevel, 1.8, -bindAddress, 127.0.0.1, -launcherDir,
> C:\pleiades-2022-12-java-win-64bit-jre_20230124\workspace\GWT29_JDK11\war,
> -logLevel, INFO, -style, OBFUSCATED, kut.hp_rc.GWT29_JDK11]
> Super Dev Mode starting up
> workDir:
> C:\Users\kazuo\AppData\Local\Temp\gwt-codeserver-7013139281438506203.tmp
> 2023-02-08 07:28:33.263:INFO::main: Logging initialized @2024ms
> Loading Java files in kut.hp_rc.GWT29_JDK11.
> Module setup completed in 2803 ms
> 2023-02-08 07:28:35.350:INFO:oejs.Server:main: jetty-9.2.z-SNAPSHOT
> 2023-02-08 07:28:35.373:INFO:oejsh.ContextHandler:main: Started
> o.e.j.s.ServletContextHandler@7bbec1cc{/,null,AVAILABLE}
> 2023-02-08 07:28:35.408:INFO:oejs.ServerConnector:main: Started
> ServerConnector@5324647{HTTP/1.1}{127.0.0.1:9876}
> 2023-02-08 07:28:35.408:INFO:oejs.Server:main: Started @4170ms
>
> The code server is ready at http://127.0.0.1:9876/
> Code server started in 3.106 s ms
> [ERROR] jreLeakPrevention.gcDaemonFail
> java.lang.ClassNotFoundException: sun.misc.GC
> at
> java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
> at
> java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
> at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
> at java.base/java.lang.Class.forName0(Native Method)
> at java.base/java.lang.Class.forName(Class.java:315)
> at
> com.google.gwt.dev.shell.jetty.JettyLauncher.jreLeakPrevention(JettyLauncher.java:899)
> at
> com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:722)
> at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:636)
> at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:898)
> at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:705)
> at com.google.gwt.dev.DevMode.main(DevMode.java:432)
> 2023-02-08 07:28:35.606:INFO:oejs.Server:main: jetty-9.2.z-SNAPSHOT
> Starting Jetty on port 8888
> [WARN] Failed startup of context
> c.g.g.d.s.j.WebAppContextWithReload@65d26881{/,file:/C:/pleiades-2022-12-java-win-64bit-jre_20230124/workspace/GWT29_JDK11/war/,STARTING}{C:\pleiades-2022-12-java-win-64bit-jre_20230124\workspace\GWT29_JDK11\war}
> MultiException[java.lang.RuntimeException: Error scanning file
> GWT29_JDK11$1.class, java.lang.RuntimeException: Error scanning file
> GWT29_JDK11$1MyHandler$1.class, java.lang.RuntimeException: Error scanning
> file GWT29_JDK11$1MyHandler.class, java.lang.RuntimeException: Error
> scanning file GWT29_JDK11.class]
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration.scanForAnnotations(AnnotationConfiguration.java:536)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration.configure(AnnotationConfiguration.java:447)
> at
> org.eclipse.jetty.webapp.WebAppContext.configure(WebAppContext.java:479)
> at
> org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1337)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:741)
> at
> org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:505)
> at
> com.google.gwt.dev.shell.jetty.JettyLauncher$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:132)
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
> at
> org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
> at
> org.eclipse.jetty.server.handler.RequestLogHandler.doStart(RequestLogHandler.java:140)
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
> at org.eclipse.jetty.server.Server.start(Server.java:387)
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
> at
> org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
> at org.eclipse.jetty.server.Server.doStart(Server.java:354)
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
> at
> com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:760)
> at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:636)
> at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:898)
> at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:705)
> at com.google.gwt.dev.DevMode.main(DevMode.java:432)
> Caused by: MultiException[java.lang.RuntimeException: Error scanning file
> GWT29_JDK11$1.class, java.lang.RuntimeException: Error scanning file
> GWT29_JDK11$1MyHandler$1.class, java.lang.RuntimeException: Error scanning
> file GWT29_JDK11$1MyHandler.class, java.lang.RuntimeException: Error
> scanning file GWT29_JDK11.class]
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:681)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:824)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:163)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:548)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.base/java.lang.Thread.run(Thread.java:829)
> Suppressed: java.lang.RuntimeException: Error scanning file
> GWT29_JDK11$1MyHandler$1.class
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
> ... 9 more
> Caused by: java.lang.UnsupportedOperationException: This feature
> requires ASM7
> at
> org.objectweb.asm.ClassVisitor.visitNestHost(ClassVisitor.java:150)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:550)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
> ... 9 more
> Suppressed: java.lang.RuntimeException: Error scanning file
> GWT29_JDK11$1MyHandler.class
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
> ... 9 more
> Caused by: java.lang.UnsupportedOperationException: This feature
> requires ASM7
> at
> org.objectweb.asm.ClassVisitor.visitNestHost(ClassVisitor.java:150)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:550)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
> ... 9 more
> Suppressed: java.lang.RuntimeException: Error scanning file
> GWT29_JDK11.class
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
> ... 9 more
> Caused by: java.lang.UnsupportedOperationException: This feature
> requires ASM7
> at
> org.objectweb.asm.ClassVisitor.visitNestMember(ClassVisitor.java:236)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:660)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
> ... 9 more
> Caused by: java.lang.RuntimeException: Error scanning file
> GWT29_JDK11$1.class
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
> ... 9 more
> Caused by: java.lang.UnsupportedOperationException: This feature requires
> ASM7
> at org.objectweb.asm.ClassVisitor.visitNestHost(ClassVisitor.java:150)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:550)
> at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
> ... 9 more
> 2023-02-08 07:28:37.073:INFO:oejs.ServerConnector:main: Started
> ServerConnector@33f918c3{HTTP/1.1}{127.0.0.1:8888}
> 2023-02-08 07:28:37.073:INFO:oejs.Server:main: Started @5835ms
>
> 2023年2月8日水曜日 4:25:02 UTC+9 jiny...@gmail.com:
>
>> Thanks very much for your suggestion!
>>
>> Therefore, we're going to use the update site below to install GWT Plugin
>> 4.0. Please correct me if it is not right.
>> https://eclipse.gwtproject.org.vertispan.com/2023-02-01
>>
>> BTW, does it work with JDK 11? We're using GWT 2.9 version and it needs
>> JDK 11 for local debugging.
>>
>> In addition, I checked the discussion site. It seems that the updated
>> site is still not available in the Eclipse marketplace yet.
>>
>> thanks,
>> Jenny
>>
>>
>>
>> On Monday, February 6, 2023 at 10:41:15 PM UTC-6 hprc wrote:
>>
>>> GWT Plugin 4.0 is a test but has been released.
>>> https://eclipse.gwtproject.org.vertispan.com/2023-02-01
>>> In my environment, by setting the compiler and facet to Java8, I have
>>> confirmed that it works on 2022-12 as well.
>>>
>>> Also, the GWT-eclipse-plugin is discussed at the following URL.
>>> https://gitter.im/gwt-plugins/gwt-eclipse-plugin
>>>
>>> 2023年2月7日火曜日 1:29:18 UTC+9 jiny...@gmail.com:
>>>
>>>> We tried to install GWT plugin 3.0 from Eclipse market place on a new
>>>> laptop for
>>>> Eclipse Version: 2020-06 (4.16.0), but we got the following not
>>>> available error message.
>>>>
>>>> This approach worked several months ago, so we're not sure why we got
>>>> this error now.
>>>> Please help give some suggestions for this issue.
>>>>
>>>> [image: GWTPluginError.jpg]
>>>>
>>>> Your help is much appreciated!
>>>>
>>>> thanks,
>>>> Jenny
>>>>
>>>
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