hibernate session创建工具类

[java]代码库

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

public class HibernateUtils {

    private static SessionFactory factory;

    static {
        try {
            //读取配置文件
            Configuration cfg = new Configuration().configure();
            factory = cfg.buildSessionFactory();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static SessionFactory getSessionFactory() {
        return factory;
    }

    //直接调用此方法创建session  Session session = HibernateUtils.getSession() 
    public static Session getSession() {
        return factory.openSession();
    }

    //关闭session，要关闭的时候条用这个方法就可以了
    public static void closeSession (Session session) {
        if (session != null) {
            if (session.isOpen() ) {
                session.close();
            }
        }
    }
}