test2.java

分别用jdbc和hibernate写的银行管理系统。可以发现什么时候用jdbc

package com.tarena.ebank.view;

import org.hibernate.HibernateException;
import org.hibernate.Session;

import com.tarena.ebank.biz.entity.Account;
import com.tarena.ebank.persist.HbnUtil;

public class Test2 {
	public static void main(String[] args) {
		Session s = null;
		try {
			s = HbnUtil.getSessionFactory().openSession();
			s.beginTransaction();
			String hql = "from Account a " 
				+ "where a.actNo=?";
			Account a = (Account) s.createQuery(hql)
			        .setString(0, "act-001")
					.uniqueResult();
			System.out.println(a.getVersion());
			a.deposite(28.0);
			try {
				Thread.sleep(20000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			s.getTransaction().commit();
			System.out.println(a.getVersion());
		} catch (HibernateException e) {
			e.printStackTrace();
			s.getTransaction().rollback();
		} finally {
			s.close();
			HbnUtil.release();
		}
	}

}