compositeservice.java

Hibernate的精典实例

package hibernate.demo.compositeKey;

import hibernate.demo.UserInfo_Pojo;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.Transaction;
import net.sf.hibernate.cfg.Configuration;

public class CompositeService {
	private static SessionFactory sf = null;
	static {
		try {
			Configuration config = new Configuration();
			config.addClass(Score_Pojo.class);
			sf = config.buildSessionFactory();
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}
	public void saveScore()throws Exception{
		Session session=null;
		Transaction tx=null;
		try{
			session=sf.openSession();
			tx=session.beginTransaction();
			Score_Pojo scorePj=new Score_Pojo();
			scorePj.setPk(new ScorePK(new Integer(1001),new Integer(2001)));
			scorePj.setScore(new Float(89.8f));
			session.save(scorePj);
			tx.commit();
		}catch(Exception ex){
			tx.rollback();
		}finally{
			session.close();
		}
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception{
		new CompositeService().saveScore();

	}

}