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I need to have a completely offline maven repository due to some limitations. According to http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException , only <pluginRepositories> are searched for plugins. So I am wondering how to configure maven to look up plugins in a local file system. I tried using "file://" prefix when setting <url> but it doesn't work.
DEBUG] Verifying availability of /home/dsun/.m2/repository/org/apache/karaf/tooling/features-maven-plugin/2.3.0/features-maven-plugin-2.3.0.jar from [central (http://repo1.maven.org/maven2, releases=true, snapshots=false, managed=false)]
[ERROR] Plugin org.apache.karaf.tooling:features-maven-plugin:2.3.0 or one of its dependencies could not be resolved: The repository system is offline but the artifact org.apache.karaf.tooling:features-maven-plugin:jar:2.3.0 is not available in the local repository. -> [Help 1]
org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.karaf.tooling:features-maven-plugin:2.3.0 or one of its dependencies could not be resolved: The repository system is offline but the artifact org.apache.karaf.tooling:features-maven-plugin:jar:2.3.0 is not available in the local repository.
dsun@localhost:> ls /home/dsun/.m2/repository/org/apache/karaf/tooling/features-maven-plugin/2.3.0/features-maven-plugin-2.3.0.jar
/home/dsun/.m2/repository/org/apache/karaf/tooling/features-maven-plugin/2.3.0/features-maven-plugin-2.3.0.jar
The settings.xml
<settings>
<offline>true</offline>
<profiles>
<profile>
<id>local</id>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<url>file://${env.HOME}/.m2/repository</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>local</activeProfile>
</activeProfiles>
<localRepository>${env.HOME}/.m2/repository</localRepository>
378
Maven central repository is located on the web. It has been created by the apache maven community itself. The path of central repository is: http://repo1.maven.org/maven2/. The central repository contains a lot of common libraries that can be viewed by this url http://search.maven.org/#browse.
Maven's local repository is a directory on the local machine that stores all the project artifacts. When we execute a Maven build, Maven automatically downloads all the dependency jars into the local repository. Usually, this directory is named .
Introduction. In Maven, there are two kinds of plugins, build and reporting: Build plugins are executed during the build and configured in the <build/> element. Reporting plugins are executed during the site generation and configured in the <reporting/> element.
Finally, I found the problem, there's a file called _maven.repositories in the plugin directory, after I delete the file, all works well!
More details, see the following links:
http://maven.40175.n5.nabble.com/Maven-3-maven-repositories-and-lastUpdated-td4927537.html
http://jira.codehaus.org/browse/MNG-5181
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