Hibernate-hibernate1.doc

此文档收集于网络，如有侵权，请联系网站删除1.在src的根目录下创建hibernate.cfg.html文件jdbc:mysql:/localhost/basemappingcom.mysql.jdbc.Driverrootroot/方言： 连接的数据库的种类org.hibernate.dialect.MySQLDialecttrueupdate2. 创建管理sessionFactory的工具类3. public class HibernateUtils 4. private static SessionFactory factory;5. static 6. try 7. Configuration cfg = new Configuration().configure();8. factory = cfg.buildSessionFactory();9. catch(Exception e) 10. e.printStackTrace();11. 12. 13. public static SessionFactory getSessionFactory() 14. return factory;15. 16. public static Session getSession() 17. return factory.openSession();18. 19. public static void closeSession(Session session) 20. if (session != null) 21. if (session.isOpen() 22. session.close();23. 24. 25. 26. 由hibernate基于128位唯一值产生算法生成十六进制的32位字符串根据数据的类型自行决定主键由程序生成public static void main(String args) /读取hibernate.cfg.xml文件Configuration cfg = new Configuration().configure();/工具利用持久化类和映射文件生成数据库架构 SchemaExport export = new SchemaExport(cfg);/有两个参数，第一个为True就是把DDL语句输出到控制台，第二个为True就是根据持久类和映射文件先执行删除再执行创建操作 export.create(true, true);public void testSave1() Session session = null;Transaction tx = null;try session = HibernateUtils.getSession();tx = session.beginTransaction();User1 user = new User1();user.setName(李四);user.setPassword(123);user.setCreateTime(new Date();user.setExpireTime(new Date();session.save(user);mit();catch(Exception e) e.printStackTrace();tx.rollback();finally HibernateUtils.closeSession(session);public void testSave2() Session session = null;Transaction tx = null;try session = HibernateUtils.getSession();tx = session.beginTransaction();User2 user = new User2();user.setName(张三1);user.setPassword(123);user.setCreateTime(new Date();user.setExpireTime(new Date();session.save(user);mit();catch(Exception e) e.printStackTrace();tx.rollback();finally HibernateUtils.closeSession(session);public void testSave3() Session session = null;Transaction tx = null;try session = HibernateUtils.getSession();tx = session.beginTransaction();User3 user = new User3();user.setId(001);user.setName(张三);user.setPassword(123);user.setCreateTime(new Date();user.setExpireTime(new Date();session.save(user);m