Hibernate数据库增删改查代码

//hql语句查询 public ArrayList findClassByHql(String hql){  ArrayList list= new ArrayList();  Session session=null;  Transaction tc=null;  try{   session=HibernateSessionFactory.getSession();   tc=session.beginTransaction();   Query qy=session.createQuery(hql);   if(qy!=null){    list=(ArrayList)qy.list();   }   tc.commit();  }catch(Exception e){   e.printStackTrace();  }  finally  {   if(session!=null)   {    session.close();   }  }    return list; }//通过ID得到类, public Account findAccountByID(String userName){  Account account=new Account();  Session session=null;  Transaction tc=null;  try{   session=HibernateSessionFactory.getSession();      tc=session.beginTransaction();      account =(com.my.jkp.hibernate.Account)session.load(com.my.jkp.hibernate.Account.class,userName );     }catch(Exception e){   e.printStackTrace();   if(tc!=null){    tc.rollback();   }  }  finally{   if(session!=null){    session.close();   }  }  return account; } //查询所有用户信息 public ArrayList findAllAccount(){  ArrayList list=new ArrayList();    String hql="from Account";  list=this.findClassByHql(hql);  return list; } //增加用户 public boolean saveAccount(Account account){  boolean tag=false;  Session session=null;  Transaction tc=null;  try{   session=HibernateSessionFactory.getSession();   tc=session.beginTransaction();   session.save(account);   tc.commit();  }catch(Exception e){   e.printStackTrace();  }  finally  {   if(session!=null)   {    session.close();   }  }  return tag; } //修改用户 public boolean updateAccount(Account account){  boolean tag=false;  Session session=null;  Transaction tc=null;  try{   session=HibernateSessionFactory.getSession();   tc=session.beginTransaction();   session.update(account);   tc.commit();  }catch(Exception e){   e.printStackTrace();  }  finally  {   if(session!=null)   {    session.close();   }  }  return tag; } //删除用户 public boolean deleteAccount(String userName){  boolean tag=false;  Session session=null;  Transaction tc=null;  Account Account=new Account();  try{   session=HibernateSessionFactory.getSession();   tc=session.beginTransaction();   Account =(com.my.jkp.hibernate.Account)session.load(com.my.jkp.hibernate.Account.class,userName );      session.delete(Account);   tc.commit();  }catch(Exception e){   e.printStackTrace();  }  finally  {   if(session!=null)   {    session.close();   }  }  return tag; }

注意：使用HIbernate对数据库进行操作，必须使用事务进行提交。