基于mybatis-config.xml声明SQL Session

 需要先配置这个xml基于mybtis的XML配置，完成对mySql数据库的SQL语句配置_你挚爱的强哥❤给你发来1条消息❤-CSDN博客.https://s-z-q.blog.csdn.net/article/details/122758483

SqlSession sqlSession = new SqlSessionFactoryBuilder().build(Resources.getResourceAsReader("mybatis-config.xml")).openSession();
UserMapper mapper = sqlSession.getMapper(UserMapper.class);
List u = mapper.selectAll();
for (Users a : u) System.out.println(a.name);System.out.println(mapper.select(55));
mapper.insert(new User("插入的姓名", 66));
mapper.delete(new User(55));
mapper.update(new User(60, "修改后的姓名", 33));
sqlSession.commit();sqlSession.close();