使用工具类管理SessionFactory和Session

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使用工具类管理SessionFactory和Session

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

public class HibernateUtil {
    private static Configuration configuration;
    private final static SessionFactory sessionFactory;

    //初始化Configuration和SessionFactory
    static {
        try {
            //配置文件名，来源resources 根目录
            configuration = new Configuration().configure("hibernate.cfg.xml");
            sessionFactory = configuration.buildSessionFactory();
        } catch (HibernateException e) {
            throw new ExceptionInInitializerError(e);
        }
    }

    //获取Session对象
    public static Session currentSesstion() {
        return sessionFactory.getCurrentSession();
    }
}