hibernate.java

数据库连接大全！希望对大家都有帮助！内容很详细

package mrgf;

import java.util.List;
import org.hibernate.cfg.Configuration;
import org.hibernate.SessionFactory;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.Query;

public class Hibernate {
    public Hibernate() {
    }

    // 在静态快中加载Hibernate配置信息
    private static SessionFactory sessionFactory;
    static {
        try {
            Configuration config = new Configuration().configure();
            sessionFactory = config.buildSessionFactory();
        } catch (Exception e) {
            System.out.println("------在初始化hibernate时抛出异常，内容如下：");
            e.printStackTrace();
        }
    }

    private Session session = null;
    private Transaction tx = null;

    //检索对象
    public List query(String hql) {
        // 打开Session，开启事物
        session = sessionFactory.openSession();
        tx = session.beginTransaction();
        //  检索数据
        List result = null;
        try {
            Query query = session.createQuery(hql);
            result = query.list();
        } catch (Exception e) {
            System.out.println("------在检索对象时抛出异常，内容如下：");
            e.printStackTrace();
        }
        // 提交事物，关闭Session
        tx.commit();
        session.close();
        return result;
    }

}