Comments on: Making a Maven Archetype

By: Maven Troubles

Maven Troubles — Thu, 12 Mar 2009 21:42:08 +0000

[...] as per Nino Martinez’s tip I used mvn archetype:create-from-project to attempt to create an archetype from my example [...]

By: Yang

Yang — Tue, 24 Feb 2009 12:59:02 +0000

I got the same error, but resolved when using newer version of archetype plugin. try 2.0-alpha-4 of maven-archetype-plugin by specifying the version in pom.xml maven-archetype-plugin 2.0-alpha-4

By: ninomartinez

ninomartinez — Sun, 25 Jan 2009 18:22:46 +0000

Hmm that’s a bit wierd, what kind of project are it, war / jar or?

But notice that both problems are actually only INFO’s…

By: Elwyn

Elwyn — Sat, 17 Jan 2009 10:08:19 +0000

Hi Nino,

Great tip here, thanks.

I have encountered a couple of problems when trying to follow the steps above and I wonder if you have any pointers on how to resolve things.

Firstly, when running mvn archetype:create-from-project I get the following error.

…

[INFO] Cannot create archetype from this project.

Embedded error: /home/emalethan/work/zzmalethan_blog/seemorej-hibernate-archetype-template/src/main/archetype/archetype.properties (No such file or directory)

…

When I add this file (empty, btw) I get a much bigger error, as follows.

…[INFO] [archetype:create-from-project]
java.lang.NullPointerException
at org.apache.oro.text.regex.Perl5Compiler.compile(Perl5Compiler.java:1954)
at org.apache.maven.archetype.FilteringCopier.copy(FilteringCopier.java:83)
at org.apache.maven.archetype.FileUtils.copyFile(FileUtils.java:797)
at org.apache.maven.archetype.FileUtils.copyFileToDirectory(FileUtils.java:749)

…

I can’t find much by Googling. I’d be grateful for any pointers?

Cheers