hibernate ?+++

package com.hust.dong;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import org.junit.Test;public class App { ???private static SessionFactory sessionFactory; ???static { ???????Configuration cfg = new Configuration(); ???????cfg.configure("hibernate.cfg.xml"); // 读取指定的主配置文件 ???????sessionFactory = cfg.buildSessionFactory(); // 根据配置生成Session工厂 ???} ???@Test ???public void testSave() { ???????User user = new User(); ???????user.setName("zhangsan"); ???????// 保存 ???????Session session = sessionFactory.openSession(); // 打开一个新的Session ???????Transaction tx = session.beginTransaction(); // 开启事务 ???????session.save(user); ???????tx.commit(); // 提交事务 ???????session.close(); // 关闭Session，释放资源(不一定是真正的关闭) ???} ???@Test ???public void testGet() { ???????Session session = sessionFactory.openSession(); ???????Transaction tx = session.beginTransaction(); ???????User user = (User) session.get(User.class, 4); // ???????System.out.println(user); ???????tx.commit(); ???????session.close(); ???}}

mysql -u root -pcreate database cm_hibernate default character set utf8;use cm_hibernate;create table t_user( id int primary key auto_increment, name varchar(20) );