<Realm className="org.apache.catalina.realm.JDBCRealm" connectionURL="jdbc:mysql://localhost/forum?user=root&amp;password=mysqltest&amp;characterEncoding=utf8" digest="MD5" driverName="com.mysql.cj.jdbc.Driver" roleNameCol="role" userCredCol="password" userNameCol="login" userRoleTable="role" userTable="user"/>