daoimp.java

来自「Hibernate开发及整合应用大全 蔡雪焘编著 本书用典型的示例剖析Hiber」· Java 代码 · 共 81 行

package persistence;

import java.util.List;

import model.Student;

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


public class DAOImp {
    static Session session=null;
	/*------------创建新的学生对象-----------------*/
	public static void createStu(Student stu) {
		try {
			session = HibernateUtil.currentSession(); //开启连接
			Transaction tx = session.beginTransaction(); //开启事务
			session.save(stu);
			tx.commit();

		} catch (HibernateException e) { //捕捉例外
			e.printStackTrace();
		}finally
		{
		    HibernateUtil.closeSession(session);
		}
	}
	/*------------删除学生对象-----------------*/
	public static void delStu(String id) {
		try {
			session = HibernateUtil.currentSession(); //开启连接	
			Transaction tx = session.beginTransaction(); //开启事务
			Student stu = (Student) session.get(Student.class, id);
			session.delete(stu);
			tx.commit();

		} catch (HibernateException e) { //捕捉例外
			e.printStackTrace();
		}finally
		{HibernateUtil.closeSession(session);}
	}
	/*------------修改学生对象-----------------*/
	public static void mdfStu(Student stu) {
		try {
			session = HibernateUtil.currentSession(); //开启连接
			Transaction tx = session.beginTransaction(); //开启事务
			session.update(stu);
			tx.commit();

		} catch (HibernateException e) { //捕捉例外
			e.printStackTrace();
		}finally
		{HibernateUtil.closeSession(session);}

	}
	/*------------取得所有的学生列表-----------------*/
	public static List getAllStu() {
		List list=null;
		try {
			session = HibernateUtil.currentSession(); //开启连接
			Transaction tx = session.beginTransaction(); //开启事务
			Query q=session.createQuery("from Student");
			list=q.list();
			tx.commit();

		} catch (HibernateException e) { //捕捉例外
			e.printStackTrace();
		}finally
		{
			HibernateUtil.closeSession(session);
		}
		return list;

	}


}