Salut,

Je suis entrain d'essayer de faire des tutos sur maven (http://www.objis.com/formation-java/...on-phases.html) depuis le taff, pour obtenir l'architecture maven je tape:
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mvn archetype:create -DgroupId=com.objis.mavenapps -DartifactId=monappli
...mais j'obtiens cette erreur à chaque fois:

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C:\Documents and Settings\utilisateur\TP\TP1>mvn archetype:create -DgroupId=com.objis.mavenapps -DartifactId=monappli
[INFO] Scanning for projects...
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.4.1/maven-clean-plugin-2.4.1.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-clean-plugin:2.4.1: Plugin org.apache.maven.plugins:mave
esolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-install-plugin/2.3.1/maven-install-plugin-2.3.1.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-install-plugin:2.3.1: Plugin org.apache.maven.plugins:ma
be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-install-plugin:jar:2.3.1
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.7/maven-deploy-plugin-2.7.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-deploy-plugin:2.7: Plugin org.apache.maven.plugins:maven
olved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-deploy-plugin:jar:2.7
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-site-plugin/3.0/maven-site-plugin-3.0.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-site-plugin:3.0: Plugin org.apache.maven.plugins:maven-s
d: Failed to read artifact descriptor for org.apache.maven.plugins:maven-site-plugin:jar:3.0
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.3/maven-antrun-plugin-1.3.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-antrun-plugin:1.3: Plugin org.apache.maven.plugins:maven
olved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-antrun-plugin:jar:1.3
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-assembly-plugin/2.2-beta-5/maven-assembly-plugin-2.2-beta-
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5: Plugin org.apache.maven.plug
s could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-assembly-plugin:jar:2.2-beta-5
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.1/maven-dependency-plugin-2.1.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-dependency-plugin:2.1: Plugin org.apache.maven.plugins:m
t be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.1
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-release-plugin/2.0/maven-release-plugin-2.0.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-release-plugin:2.0: Plugin org.apache.maven.plugins:mave
esolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-release-plugin:jar:2.0
Downloading: http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
[WARNING] Could not transfer metadata org.apache.maven.plugins/maven-metadata.xml from/to central (http://repo.maven.apache.org/maven2): r
[WARNING] Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/to central (http://repo.maven.apache.org/maven2): repo.mav
[WARNING] Failure to transfer org.apache.maven.plugins/maven-metadata.xml from http://repo.maven.apache.org/maven2 was cached in the local
te interval of central has elapsed or updates are forced. Original error: Could not transfer metadata org.apache.maven.plugins/maven-metad
 repo.maven.apache.org
[WARNING] Failure to transfer org.codehaus.mojo/maven-metadata.xml from http://repo.maven.apache.org/maven2 was cached in the local reposi
rval of central has elapsed or updates are forced. Original error: Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/t
ache.org
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.468s
[INFO] Finished at: Tue May 29 14:37:14 CEST 2012
[INFO] Final Memory: 2M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'archetype' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.moj
ttings\utilisateur\repository), central (http://repo.maven.apache.org/maven2)] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException
'cmd' n'est pas reconnu en tant que commande interne
ou externe, un programme exécutable ou un fichier de commandes.

Vous avez une idée?