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https://issues.apache.org/jira/browse/MSHADE-337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16996856#comment-16996856
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Karl Heinz Marbaise commented on MSHADE-337:
--------------------------------------------
We need to check if there is an updated version of asm package. Based on the
web site there is a newer version available (7.2)
https://asm.ow2.io/versions.html so you can as a first step overwrite the
version via dependency in your plugin configuration like this:
Current master already contains an updated version.
{code:xml}
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<dependencies>
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm</artifactId>
<version>7.2</version>
</dependency>
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm-commons</artifactId>
<version>7.2</version>
</dependency>
</dependencies>
</plugin>
</plugins>
{code}
This should help until the new release of maven-shade-plugin has been done.
> Relocation cannot process class file version 58 JARs
> ----------------------------------------------------
>
> Key: MSHADE-337
> URL: https://issues.apache.org/jira/browse/MSHADE-337
> Project: Maven Shade Plugin
> Issue Type: Bug
> Affects Versions: 3.2.1
> Reporter: Jordan Zimmerman
> Priority: Major
> Attachments: shade-bug.zip
>
>
> I was playing around with Java 14 and was making a shaded JAR. The shade
> plugin seems to work fine but if I add a relocation it throws:
> {noformat}
> java.lang.IllegalArgumentException: Unsupported class file major version 58
> {noformat}
> Steps to Reproduce:
> * Unzip the enclosed attachment
> * Make sure Java 14 is installed and JAVA_HOME points at it
> * Run {{mvn package}}
> Stacktrace:
> {noformat}
> Caused by: java.lang.IllegalArgumentException: Unsupported class file major
> version 58
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:184)
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:166)
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:152)
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:273)
> at org.apache.maven.plugins.shade.DefaultShader.addRemappedClass
> (DefaultShader.java:438)
> at org.apache.maven.plugins.shade.DefaultShader.shadeSingleJar
> (DefaultShader.java:240)
> at org.apache.maven.plugins.shade.DefaultShader.shadeJars
> (DefaultShader.java:196)
> at org.apache.maven.plugins.shade.DefaultShader.shade
> (DefaultShader.java:106)
> at org.apache.maven.plugins.shade.mojo.ShadeMojo.execute
> (ShadeMojo.java:442)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:137)
> {noformat}
> Notes:
> * I tried to make the example as minimal as possible
> * The relocation patterns don't see to matter. The issue is in the relocator
> code opening a JAR dependency I guess
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