In the maven plugin of eclipse, the jar in the local repository cannot be searched for a solution that cannot be found

    Reason: Because the index index of the local warehouse in maven has not been updated, it cannot be searched in the maven plugin of eclipse.

Solution:
　　1. Open the menu window-> show view –> other –> Maven -> maven repositories in eclipse
　　2. After opening, select local repositories –> local repository, right-click, select Build index.