The web project imported the MySQL driver jar package but failed to load it into the driver

The phenomenon and background of the problem

JavaWeb,WEB-INF Under the lib add to mysql drive jar After the package , It must be in TomCat Of lib Add... Under mysql drive jar Is it a bag , Why some are not TomCat Of lib Add below mysql drive jar The package can also access the data of the database , Some must be added jar Package to access data .

Problem related code , Do not paste screenshots

Operation results and error reporting contents

My solution ideas and tried methods

What I want to achieve