这就是我们的数据访问层。下一篇我们讲它的业务逻辑层
蜗牛―Javaweb之简易学生管理系统(一)(二)
sion();
try{
transaction=session.beginTransaction();
String queryString="from Stuinfo as model where model."+type+"= ";
query=session.createQuery(queryString);
query.setParameter(0, value);
List list=query.list();
transaction.commit();
session.close();
return list;
}catch(Exception e){
message("findInfo.error:"+e);
e.printStackTrace();
return null;
}
}
public List findAllInfo(){
session=HibernateSessionFactory.getSession();
try{
transaction=session.beginTransaction();
String queryString="from Stuinfo";
query=session.createQuery(queryString);
List list=query.list();
transaction.commit();
session.close();
return list;
}catch(Exception e){
message("findInfo.error:"+e);
e.printStackTrace();
return null;
}
}
public boolean deleteInfo(String id){
try{
session=HibernateSessionFactory.getSession();
transaction=session.beginTransaction();
Stuinfo info=new Stuinfo();
info=(Stuinfo)session.get(Stuinfo.class, id);
session.delete(info);
transaction.commit();
session.close();
return true;
}catch(Exception e){
message("deleteInfo.error:"+e);
e.printStackTrace();
return false;
}
}
public boolean updateInfo(Stuinfo info){
try{
session=HibernateSessionFactory.getSession();
transaction=session.beginTransaction();
session.update(info);
transaction.commit();
session.close();
return true;
}catch(Exception e){
message("updateInfo.error:"+e);
e.printStackTrace();
return false;
}
}
public void message(String mess){
int type=JOptionPane.YES_NO_OPTION;
String title="提示信息";
JOptionPane.showMessageDialog(null, mess, title, type);
}
}