m2e lifecycle-mapping not found

Question

I am trying to use the solution described here to solve the annoying \"Plugin execution not covered by lifecycle configuration: org.codehaus.mojo:build-helper-maven-plugin:1

Answer 1

Maven is trying to download m2e's lifecycle-mapping artifact, which M2E uses to determine how to process plugins within Eclipse (adding source folders, etc.). For some reason this artifact cannot be downloaded. Do you have an internet connection? Can other artifacts be downloaded from repositories? Proxy settings?

For more details from Maven, try turning M2E debug output on (Settings/Maven/Debug Output checkbox) and it might give you more details as to why it cannot download from the repository.