源码学习之mybatis

1、先看看俩种调用方式

public static void main(String[] args) {
    SqlSessionFactory sqlSessionFactory;
    SqlSession session = null;
    try {
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        session = sqlSessionFactory.openSession();
        HashMap<String,String> result = session.selectOne("selectBlog", 110);
        System.out.println("Result: "+result);
    } catch (Exception ex) {
        ex.printStackTrace();
    } finally {
        if(session != null){
            session.close();
        }
    }
}

　　

public static void main(String[] args) {
    SqlSessionFactory sqlSessionFactory;
    SqlSession session = null;
    try {
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        session = sqlSessionFactory.openSession();
        ReleaseDTOMapper mapper = session.getMapper(ReleaseDTOMapper.class);
 
        HashMap<String,String> param = new HashMap<String,String>();
        param.put("STATE", "N");
        param.put("UPGRADE_ID","2");
        HashMap<String,String> result = mapper.getReleaseNote(param);
        System.out.println("Result: "+result);
        List<HashMap<String,String>> rs = mapper.getUpgradeNote();
        for(HashMap<String,String> r : rs){
            System.out.println("Result: "+r);
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    } finally {
        if(session != null){
            session.close();
        }
    }
}

　　

2 整体结构

其他知识点

mybatis 一二级缓存

Spring-mybatis 缓存失效问题

ref

https://blog.csdn.net/Vera1114/article/details/78763322

https://www.jianshu.com/p/73ee8caddc68

https://baijiahao.baidu.com/s?id=1595688310049388329&wfr=spider&for=pc

http://www.crazyant.net/2022.html

https://blog.csdn.net/chenyao1994/article/details/79233725