创建sqlSession对象操作数据库

1.加载核心配置文件

//加载mybatis核心配置文件，获取SqlSessionFactory
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        inputStream.close();

2.获取sqlSession对象

//获取Sqlsession对象，用它执行sql
        SqlSession sqlSession = sqlSessionFactory.openSession();

3.获取mapper对象，利用该对象执行相应数据库操作

UserMapper usermapper = sqlSession.getMapper(XxxMapper.class);

4.执行相应方法（如下）

//查询所有用户
        List<User> users1 = usermapper.selectall();
        sqlSession.close();

标签：配置文件,对象,创建,数据库,usermapper,inputStream,获取,sqlSession
来源： https://www.cnblogs.com/theng/p/16686117.html