No suitable driver found MariaDB

I'm trying to insert a tuple of data into a DB using JDBC through a web page.

I made a ConnectionFactory class to encapsulate the connection with MariaDB, I imported the driver for the classpath, I tried inserting some data with a Teste class with a Main and worked recognized the driver normally. However, when I use it in the servlet it throws the error:

Ihavealreadyputthedriverjarinsidethetomcatlibfolder,IalreadyputitinsidetheWEB-INF/libintheprojectdeploybutnothing.I'vealreadyput:

Class.forName("com.mysql.jdbc.Driver");    

at the factory but to no avail.