src/com/jiudai/dao/CustomerDAO.java

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package com.jiudai.dao;

 
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.jiudai.Utils.HibernateUtil;
import com.jiudai.domain.Customer;

public class CustomerDAO {

	/*查询所有客户信息*/
	public List	QueryAllCustomer() {
		Session s = null;
		try {
			s = HibernateUtil.getSession();
			String hql = "From Customer"; 
			Query q = s.createQuery(hql); 
			List customerList = q.list();
			return customerList;
		} finally {
			HibernateUtil.closeSession();
		} 
	}
	
	/*根据客户名称查询客户信息*/
	public Customer GetCustomer(String customername) {
		System.out.print(customername);
		Session s = null;
		try {
			s = HibernateUtil.getSession();
			Customer customer = (Customer)s.get(Customer.class, customername);
			return customer;
		} finally {
			HibernateUtil.closeSession();
		}
	}

	public void ModifyCustomer(Customer customer) {
		Session s = null;
		Transaction tx = null;
		try {
			s = HibernateUtil.getSession();
			tx = s.beginTransaction();
			s.update(customer);
			tx.commit();
		} catch (HibernateException e) {
			if(tx != null)
				tx.rollback();
			throw e;
		} finally {
			HibernateUtil.closeSession();
		} 
		
	}