public class IUserDaoTest {
    public static void main(String[] args) throws IOException {
        //1.读取配置文件
        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
        //2. 创建SqlSessionFactory工厂
        SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder();
        SqlSessionFactory factory = builder.build(in);
        //3. 使用工厂生产SqlSession对象
        SqlSession session = factory.openSession();
        // 4. 使用SqlSession创建DAO接口的代理对象
        IUserDao userDao = session.getMapper(IUserDao.class);
        //5. 使用代理对象执行方法
        List<User> users = userDao.findAll();
        for(User user : users){
            System.out.println(user);
        }
        session.close();
        in.close();
    }
}