Question

当我尝试在eclipse juno中安装maven时，我遇到了这个错误。错误详情：

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)

如果知道正确的答案，请帮助我。

谢谢

Answer 1

如果你落后于代理，请务必在maven的settings.xml中定义它。我猜您正在使用外部maven安装，因此您可以在MAVEN_HOME/conf中找到此文件。在此文件中搜索<proxies> </proxies>标记，并查看这些标记之间的示例，了解如何设置代理。还要确保在Eclipse中选择外部maven安装（Preferences > Maven > Installations）。最后一步是将用户设置（Preferences > Maven > User Setting）配置为指向settings.xml（全局和用户）。运行更新项目，错误应该消失。

请注意，如果您移至没有代理的网络，则应在settings.xml中注释掉已定义的代理，或在<active>false</active>代码中设置<proxy>代码。

日食juno中的maven安装错误

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