The problem that the correct database jar package is not referenced by pom.xml in the maven project? The problem of connecting to the mysql database maven coordinates. Take the intellij development tool
POMS User Guide - Chapter 1: Getting Started
How to make a fluffy pom pom - mypoppet.com.au | Fabriquer un pompon, Créations artisanales en tricot, Artisanat de pompons