relocate not working: Unsupported class file major version 63 #877
Comments
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Use Shadow 8, the older versions don't support newer JDK. |
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I'm having the same issue, adding This project is running on Java 11 (like @cnglen), cannot find any indication that Java 19(63) is being used. @cnglen were you able to successfully fix this by using Shadow 8? Upgrading to Grade-8 is going to take a bit of work in my project and would like to avoid it if it didn't fix for you. Gradle 7.4Build time: 2022-02-08 09:58:38 UTC Kotlin: 1.5.31 |
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Hey, i have the same issue when using |
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Hi, did anyone managed to find a workaround for this issue? A lot of newer library versions are 'multi release' versions, aka including in META-INF/versions java classes compiled for multiple JDK's, see https://openjdk.org/jeps/238 |
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I tried compiling it with JDK8, but it also produced the |
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I too am running into the same issue when I use a relocate in the shadow plugin, anyone found out a workaround to get over this issue?
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The problem went away when using "com.github.johnrengelman.shadow" version "8.1.1" instead of version 7 |
The problem is still present with 8.1.1 version on my end. |
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Yes I think the problem is still present and as @cornelcreanga points out more and more libraries are using the multi-release style jar files https://openjdk.org/jeps/238. So if you are running a lesser JDK such as JDK17 and you happen to use one of these multi-release style jars that has class files for JDK17 and JDK19 you see this exception for the JDK19 class files: The JVM and I presume ASM simply doesn't know what do with a higher version class file. Does the filter / exclusion logic in the Shadow jar work before ASM kicks in? Seems like it doesn't given what we are hearing from reports. I ran into this issue myself with the latest jackson-core library and filed an issue there originally: |
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Shadow 8.1.1 works well on Gradle 8 and Java 19, check Goooler/StringResExporter#29. @rmatec If it does not work for you, please provide me with a minimum reproducer. |
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I added the following exclusions to avoid the incompatible classes being shadowed exclude 'META-INF/versions/17/' and worked for me. My 2cts. |
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Shadow Version
Gradle Version
gradle -version
Gradle 7.6
Build time: 2022-11-25 13:35:10 UTC
Revision: daece9dbc5b79370cc8e4fd6fe4b2cd400e150a8
Kotlin: 1.7.10
Groovy: 3.0.13
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 11.0.18 (Amazon.com Inc. 11.0.18+10-LTS)
OS: Mac OS X 12.4 x86_64
Expected Behavior
Actual Behavior
Gradle Build Script(s)
shadowJar { configurations = [project.configurations.flinkShadowJar] relocate 'com.google.protobuf', 'org.shadow.protobuf' }Content of Shadow JAR (
jar tf <jar file>- post link to GIST if too long)gradle build
FAILURE: Build failed with an exception.
Execution failed for task ':shadowJar'.
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