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https://issues.apache.org/jira/browse/JS2-1365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16637585#comment-16637585
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David Sean Taylor commented on JS2-1365:
----------------------------------------
Sounds like we'd have to package with Tomcat9
> Old Version of Tomcat packaged with JetSpeed
> --------------------------------------------
>
> Key: JS2-1365
> URL: https://issues.apache.org/jira/browse/JS2-1365
> Project: Jetspeed 2
> Issue Type: Bug
> Affects Versions: 2.3.1
> Reporter: peter_lena...@ibi.com
> Priority: Critical
> Attachments: jetspeed-crashing.png
>
>
> The older version of Tomcat currently packaged with Jetspeed, does not
> support The Java 9 feature of Multi Release Jar files.
> As a result, the log4j-api-2.11.0.jar which is packaged with Java 9 support
> causes an
> error when trying to parse the Java 9 classes.
> This error can be seen in the attached image, and the trace below.
> Editing the log4j-api-2.11.0.jar jar file and removing the Java 9 files
> allows the portlet to start.
> This is not a problem in the JetSpeed code, just the packaging of older
> tomcat in the jetspeed release 2.3.1
>
> Here is the stack trace which shows the problem is in tomcat.
>
> Creating war C:\Apache\Jetspeed-2.3.1\webapps\ops286.war ...
> War C:\Apache\Jetspeed-2.3.1\webapps\ops286.war created
> Oct 03, 2018 3:33:06 PM org.apache.catalina.startup.HostConfig deployWAR
> INFO: Deploying web application archive
> C:\Apache\Jetspeed-2.3.1\webapps\ops286.war
> Oct 03, 2018 3:33:07 PM org.apache.catalina.deploy.WebXml setVersion
> WARNING: Unknown version string [3.1]. Default version will be used.
> Oct 03, 2018 3:33:09 PM org.apache.catalina.startup.ContextConfig
> processAnnotationsJar
> SEVERE: Unable to process Jar entry [META-INF/versions/9/module-info.class]
> from Jar
> [jar:file:/C:/Apache/Jetspeed-2.3.1/webapps/ops286/WEB-INF/lib/log4j-api-2.11.0.jar!/]
> for annotations
> org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag
> in constant pool: 19
> at
> org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
> at
> org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:55)
> at
> org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:176)
> at
> org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:85)
> at
> org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2121)
> at
> org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1983)
> at
> org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1944)
> at
> org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1929)
> at
> org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1328)
> at
> org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:887)
> at
> org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:387)
> at
> org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
> at
> org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
> at
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5472)
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
> at
> org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
> at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
> at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
> at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1092)
> at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1984)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Oct 03, 2018 3:33:09 PM org.apache.catalina.startup.TldConfig execute
> INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable
> debug logging for this logger for a complete list of JARs that were scanned
> but no TLDs were found in them. Skipping unneeded JARs during scanning can
> improve startup time and JSP compilation time.
> JetspeedContainerServlet: starting initialization of Portlet Application at:
> ops286
> JetspeedContainerServlet: initialization done for Portlet Application at:
> ops286
> Oct 03, 2018 3:33:09 PM org.apache.catalina.startup.HostConfig deployWAR
> INFO: Deployment of web application archive
> C:\Apache\Jetspeed-2.3.1\webapps\ops286.war has finished in 2,624 ms
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