[MWRAPPER-160] Wrapper fails for Maven >= 4.0.0-beta-5

[jira-importer]

Juan Farré opened MWRAPPER-160 and commented

Wrapper types source, bin and script fail for Maven versions 4.0.0-beta-5 and 4.0.0-rc-2. I haven't tested the other versions in between, but I guess they fail too.

Fails both for mvnw and mvnw.cmd.

The failure is not reproduced when using type only-script, so I guess the problem is in the wrapper jar.

This is the failure:

!error.png!

This is working correctly for Maven 4.0.0-beta-4:

!correct.png!

This is working correctly for type only-script and Maven 4.0.0-beta-5.

!correctOnlyScript.PNG!

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Affects: 3.3.2

Attachments:

• correct.png (13.65 kB)
• correctOnlyScript.PNG (13.08 kB)
• error.png (22.51 kB)

[hazendaz]

still a problem with 4.0.0-rc-4

testing on my local windows 11, running the wrapper does download the jar file, does download the distribution. It fails to use it though.

[hazendaz]

Found the issue.

maven main now is selective for maven 4. IMO maven should default inside itself instead of throwing the error which is affecting maven wrapper. The script in beta-5 and above has this fall back.

if "%MAVEN_MAIN_CLASS%"=="" @set MAVEN_MAIN_CLASS=org.apache.maven.cling.MavenCling

If you add that to the mvnw file just before the maven execution and then add

  "-Dmaven.mainClass=%MAVEN_MAIN_CLASS%" ^

To the actual call, it then works.