DataSource dataSource = new PooledDataSource(
                "com.mysql.jdbc.Driver",
                "jdbc:mysql://HOST:PORT/SCHEMA",
                "USERNAME",
                "PASSWORD");

        TransactionFactory transactionFactory = new JdbcTransactionFactory();
        Environment environment = new Environment("development", transactionFactory, dataSource);
        Configuration configuration = new Configuration(environment);
        configuration.addMapper(MyMapper.class);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);

        SqlSession session = sqlSessionFactory.openSession();
        MyMapper mapper = session.getMapper(MyMapper.class);