问不能连接到数据库

EN

org.hibernate.engine.jdbc.internal.JdbcServicesImpl: HHH000342: 
Could not obtain connection to query metadata : 
Driver:org.h2.Driver@7ed6a46e returned null for 
URL:jdbc:mysql://localhost:3306/testDatabase

     # Database settings. 
   database:

     # the name of your JDBC driver   
     driverClass: org.h2.Driver

     # the username   
     user: root

     # the password   
     password: superSecretPassword

     # the JDBC URL   
     url: jdbc:mysql://localhost:3306/testDatabase
   server:
     type: simple
     connector:
         type: http
         port: 8080