上篇博客利用Hibernate搭建起一個簡單的例子，把數據庫的映射顯示了出來在上一篇的博客基礎上這篇博客講述如何利用Hinbernate框架實現簡單的數據庫操作。 1、加入junit.jar 2、新建一個工具類HibernateUtils.Java把一些對session的公共操作封裝起來 ~~~ import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class HibernateUtils { /* *讀取Hibernate.cfg.xml文件 */ private static SessionFactory factory; static { try { //讀取hibernate.cfg.xml文件 Configuration cfg = new Configuration().configure(); //建立SessionFactory factory = cfg.buildSessionFactory(); }catch(Exception e) { e.printStackTrace(); } } /* *打開Session */ public static Session getSession() { return factory.openSession(); } /* *關閉Session */ public static void closeSession(Session session) { if (session != null) { if (session.isOpen()) { session.close(); } } } public static SessionFactory getSessionFactory() { return factory; } } ~~~ 3、新建一個test類繼承TestCase（Junit包里面的）然后下面就利用test類對User對象的增、刪、改、查。 ~~~ import java.util.Date; import org.hibernate.Session; import com.bjpowernode.hibernate.HibernateUtils; import com.bjpowernode.hibernate.User; import junit.framework.TestCase; public class test extends TestCase { /* * 增加User */ public void testSave() { Session session = null; try { session = HibernateUtils.getSession(); session.beginTransaction(); User user = new User(); user.setName("李四"); user.setPassword("123"); user.setCreateTime(new Date()); user.setExpireTime(new Date()); session.save(user); session.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); session.getTransaction().rollback(); }finally { HibernateUtils.closeSession(session); } } /** * 刪除 */ public void testDel(){ Session session = null; try { session = HibernateUtils.getSession(); session.beginTransaction(); User user=(User)session.load(User.class, "4028989545a244640145a24466300001"); session.delete(user); session.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); session.getTransaction().rollback(); }finally { HibernateUtils.closeSession(session); } } /** * 修改 */ public void testUpdate(){ Session session = null; try { session = HibernateUtils.getSession(); session.beginTransaction(); User user=(User)session.load(User.class, "4028989545a243ca0145a243cbf80001"); user.setName("王五"); session.update(user); session.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); session.getTransaction().rollback(); }finally { HibernateUtils.closeSession(session); } } /** * 查詢 */ public void testLoad(){ Session session = null; try { session = HibernateUtils.getSession(); session.beginTransaction(); User user=(User)session.load(User.class, "4028989545a243ca0145a243cbf80001"); System.out.println(user.getName()); System.out.println(user.getId()); System.out.println(user.getPassword()); System.out.println(user.getClass()); System.out.println(user.getCreateTime()); System.out.println(user.getExpireTime()); session.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); session.getTransaction().rollback(); }finally { HibernateUtils.closeSession(session); } } } ~~~ 4、效果圖 增  刪  改  查  總結： 利用Hibernate簡單的增、刪、改、查操作的應用是一個很基礎的應用剛學Hibernate就應該先從簡單的學起。