Mybatis加载配置文件从而操作数据库

首先，我们需要加载mybatis的配置文件

InputStream inputStream = Resources.getResourceAsStream("mybatis-config.xml");

然后，我们需要获取SqlSessionFactory

SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

然后，我们需要获取SqlSession

SqlSession sqlSession = sessionFactory.openSession();

然后就是操作数据库

EmployeeMapper mapper = sqlSession.getMapper(EmployeeMapper.class);
Employee employee = mapper.queryOneById(3);
System.out.println(employee);

最后关闭资源

sqlSession.close();