I have installed maven 2.2.1 on my debian machine and getting the following error
[WARNING] repository metadata for: 'org.apache.maven.plugins' could not be retrieved from repository: central due to an error: Error transferring file: repository.exoplatform.org
What I have been able to find relating to this problem is its typically caused by not having proxy settings correctly configured or a firewall blocking traffic, but I dont have either on this machine. Also, I have the same settings file on my windows machine and it works fine.
Any suggestions would be greatly appreciated as I am stumped.
exo@melb-web:~/test$ mvn -v
Apache Maven 2.2.1 (r801777; 2009-08-07 05:16:01+1000)
Java version: 1.5.0_22
Java home: /usr/local/bin/jdk1.5.0_22/jre
Default locale: en_AU, platform encoding: UTF-8
OS name: "linux" version: "2.6.22-3-amd64" arch: "i386" Family: "unix"
exo@melb-web:~/test$ mvn archetype:generate
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'archetype'.
[INFO] org.apache.maven.plugins: checking for updates from central
[WARNING] repository metadata for: 'org.apache.maven.plugins' could not be retrieved from repository: central due to an error: Error transferring file: repository.exoplatform.org
[INFO] Repository 'central' will be blacklisted
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] The plugin 'org.apache.maven.plugins:maven-archetype-plugin' does not exist or no valid version could be found
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Wed Jun 30 10:18:33 EST 2010
[INFO] Final Memory: 2M/136M
[INFO] ------------------------------------------------------------------------
* EDIT *
I tried removing the settings.xml and generating a new maven project. I got the following
exo@melb-web:~/test$ mvn archetype:generate
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'archetype'.
[INFO] org.apache.maven.plugins: checking for updates from central
[WARNING] repository metadata for: 'org.apache.maven.plugins' could not be retrieved from repository: central due to an error: Error transferring file: repo1.maven.org
[INFO] Repository 'central' will be blacklisted
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] The plugin 'org.apache.maven.plugins:maven-archetype-plugin' does not exist or no valid version could be found
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Wed Jun 30 11:40:26 EST 2010
[INFO] Final Memory: 1M/136M
[INFO] ------------------------------------------------------------------------
I think this rules out it being a problem with the settings.xml or a pom. Is there a way to get more information about why maven cant connect to the repository?
Just to close the loop on this one – it turned out to be an issue with the libraries debian had available for java uses to resolve hostnames. The fix is to apply a new libdns for java as described here http://www.ehow.com/how_4747553_fix-unknownhostexception-java-applications-ubuntu.html. Once I did this I am able to run mvn with jdk5 and jdk6.