score:381

Accepted answer
  1. In Eclipse, click on Windows > Preferences, and then choose Maven in the left side.
  2. Check the box "Download repository index updates on startup".
    • Optionally, check the boxes Download Artifact Sources and Download Artifact JavaDoc.
  3. Click OK. The warning won't appear anymore.
  4. Restart Eclipse.

http://i.imgur.com/IJ2T3vc.png

score:93

Tick 'Full Index Enabled' and then 'Rebuild Index' of the central repository in 'Global Repositories' under Window > Show View > Other > Maven > Maven Repositories, and it should work.

The rebuilding may take a long time depending on the speed of your internet connection, but eventually it works.


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