Java MyBatis之Mapper代理详解

List<Member> members = sqlSession.selectList("test.selectAll");

public class MyBatisDemo2 {
    public static void main(String[] args) throws IOException {
        //1. 加载mybatis的核心配置文件，获取 SqlSessionFactory
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

        //2. 获取SqlSession对象，用它来执行sql
        SqlSession sqlSession = sqlSessionFactory.openSession();
        //3. 执行sql (只有这块需要手写，其他步骤直接复制)
        // List<Member> members = sqlSession.selectList("test.selectAll"); // 命名空间+id，这就是命名空间的作用：便于区分
        MemberMapper memberMapper = sqlSession.getMapper(MemberMapper.class);
        List<Member> members = memberMapper.selectAll();
        System.out.println(members);

        //4. 释放资源
        sqlSession.close();
    }
}