Mybatis

Posted 2020-10-18 水底的土豆

1、介绍

持久层框架，它支持定制化 SQL、存储过程以及高级映射。MyBatis 避免了几乎所有的 JDBC 代码和手动设置参数以及获取结果集

2、一般SQL调用

Class.forName("driver");// 1
Connection c = DriverManager.getConnection();// 2
Statement s = c.createStatement();ResultSet r = s.executeQuery("sql");
//或者
PreparedStatement pst = conn.prepareStatement(sql2);pst.setString(1,"8888");pst.setInt(2,198);pst.executeUpdate();// 3
r.close();c.close();// 4

3、调用逻辑

String resource = "org/mybatis/example/mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

SqlSession session = sqlSessionFactory.openSession();

try {
  BlogMapper mapper = session.getMapper(BlogMapper.class);
  Blog blog = mapper.selectBlog(101);
} finally {
  session.close();
}