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While I am tring to install maven in eclipse juno I got this error. error details:

Multiple annotations found at this line: - Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (execution: default-compile, phase: compile) - CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:2.5.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:2.5.1: ArtifactResolutionException: The repository system is offline but the artifact org.apache.maven.plugins:maven-compiler-plugin:pom:2.5.1 is not available in the local repository. - Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:2.5.1:testCompile (execution: default-testCompile, phase: test-compile)

please help me if knows proper answer.

thanks

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  • First i would check The repository system is offline but the.. and try to build on command line...without any issue afterwards i would go into the IDE. Commented May 12, 2014 at 17:14
  • Check if inside Configuration of Eclipse Juno, Maven is in offline mode, if so, put it in online mode... Commented May 13, 2014 at 8:31

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If you're behind proxy be sure to define it in maven's settings.xml. I'm guessing you are using external maven installation so you can find this file in MAVEN_HOME/conf. Inside this file search for the <proxies> </proxies> tag and see the example between these tags of how can you set your proxy. Also be sure to choose external maven installation in Eclipse (Preferences > Maven > Installations). The last step is to configure the User Settings (Preferences > Maven > User Setting) to point to the settings.xml (Global and User). Run Update Project and the error should disappear.

Note that if you move to network without proxy, you should comment out the defined proxy in settings.xml or set the <active>false</active> tag in the <proxy> tag.

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Wow... I've been making work-arounds on this issue for a good half year now, but I was starting a new project at work, and wanted to make the set-up correctly this time. I was just missing the pointer to user settings in Eclipse, that pointed to the Global settings. Thanks!

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