Hibernate之API初识及增删改查实现案例hibernate003

package com.almostman.dao.impl; import java.util.ArrayList; import java.util.List; import org.hibernate.Session; import org.hibernate.Transaction; import com.almostman.dao.MemberDAO; import com.almostman.domain.Member; import com.almostman.util.HibernateUtil; @SuppressWarnings("unchecked") public class MemberDAOImpl implements MemberDAO{ public void save(Member member) { Session session = HibernateUtil.getSession(); Transaction trs = session.beginTransaction(); try{ session.save(member); trs.commit(); }catch(Exception e){ e.printStackTrace(); if(trs != null){ trs.rollback(); } }finally{ HibernateUtil.close(session); } } public List<Member> findAll() { List<Member> lists = new ArrayList<Member>(); Session session = HibernateUtil.getSession(); Transaction trs = session.beginTransaction(); try{ lists = session.createQuery("from Member").list(); trs.commit(); }catch(Exception e){ e.printStackTrace(); if(trs != null){ trs.rollback(); } }finally{ HibernateUtil.close(session); } return lists; } public void delete(Long id) { Session session = HibernateUtil.getSession(); Transaction trs = session.beginTransaction(); try{ Member member = (Member) session.get(Member.class, id); session.delete(member); trs.commit(); }catch(Exception e){ e.printStackTrace(); if(trs != null){ trs.rollback(); } }finally{ HibernateUtil.close(session); } } public void update(Member member) { Session session = HibernateUtil.getSession(); Transaction trs = session.beginTransaction(); try{ session.update(member); trs.commit(); }catch(Exception e){ e.printStackTrace(); if(trs != null){ trs.rollback(); } }finally{ HibernateUtil.close(session); } } public Member getById(Long id) { Session session = HibernateUtil.getSession(); Transaction trs = session.beginTransaction(); Member member = null; try{ member = (Member) session.get(Member.class, id); trs.commit(); }catch(Exception e){ e.printStackTrace(); if(trs != null){ trs.rollback(); } }finally{ HibernateUtil.close(session); } return member; } }