HibernateUtils

Hibernate的工具類

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtils {
	private static Configuration conf;
	private static SessionFactory factory;
	
	//conf對象只要加載一次就可以了
	//如果放入 openSession 方法中效率就會降低
	static{
		conf = new Configuration();
		conf.configure();
		factory = conf.buildSessionFactory();
	}
	
	public static Session openSession(){
		return factory.openSession();
	}

}