小试Hibernate3.0+eclipse 3.1M4

王伟东

环境如下
Eclipse 3.1M4: http://www.eclipse.org
JBoss Eclipse IDE 1.4.x: http://www.jboss.org/
Hibernate 3.0 beta3: http://prdownloads.sourceforge.net/hibernate
Hibernate Tools 3.0 alpha 1: http://www.hibernate.org/Projects/HibernateTools
Jdk 1.4.2
插件
关于Hibernator tools在hibernate开发的Eclipse下的插件

示例
Hibernate和Hibernator tools的文档非常齐全（英文）
Hibernator tools的用法就更简单了还有一个Flash向导 : http://www.hibernate.org/hib_docs/tools/viewlets/createcfgxml_viewlet_swf.html

根据Flash向导很容易就得到其相应的Project，关于数据库的选用根据你自己的喜好了，我是用的SQL Server

通过*.hbm.xml存放在相应的Java文件目录且名字相同如下：
User.java
Users.hbm.xml

注意hibernate.cfg.xml的位置根据你的实际环境正确放置，比如我用的是tomcat工程的目录结构，我就放在了WEB-INF\classes下面如下：
GeneralHbmSettings.hbm.xml
hibernate.cfg.xml

接下来写测试范例：
package test;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.hibernate.*;import org.hibernate.cfg.*;public class HibernateUtil { private static Log log = LogFactory.getLog(HibernateUtil.class); private static final SessionFactory sessionFactory; static { try { // Create the SessionFactory sessionFactory = new Configuration().configure() .buildSessionFactory(); } catch (Throwable ex) { // Make sure you log the exception, as it might be swallowed log.error("Initial SessionFactory creation failed.", ex); throw new ExceptionInInitializerError(ex); } } public static final ThreadLocal session = new ThreadLocal(); public static Session currentSession() throws HibernateException { Session s = (Session) session.get(); // Open a new Session, if this Thread has none yet if (s == null) { s = sessionFactory.openSession(); session.set(s); } return s; } public static void closeSession() throws HibernateException { Session s = (Session) session.get(); session.set(null); if (s != null) s.close(); }}



test.java
//下面数据库对象及方法换成你自己的
package test;import hib.user.Users;import org.hibernate.*;public class Test { public static void main(String［］ args) {//自己替换［］ try { Session session = HibernateUtil.currentSession(); Transaction tx = session.beginTransaction(); Users userInfo = new Users(); userInfo.setLogonId("userid" ); userInfo.setEmailAddress("wweidong@sina.com"); session.save(userInfo); tx.commit(); HibernateUtil.closeSession(); } catch (Exception e) { e.printStackTrace(); } } }