Hibernate ,Serverlet POST查询

Hibernate ,Serverlet POST查询

         try  {
            String username  =  request.getParameter( " username " );
            String password  =  request.getParameter( " password " );
            SessionFactory sf  =  DefaultDataUtil.getSessionFactory();
            Session s  =  sf.openSession();
            Query query  =  s.createQuery( " from Users where username=:name " );
            query.setParameter( " name " , username);
            List list  =  query.list();
             if (list.size()  ==   1 )
            {
                Object o  =  list.get( 0 );
                Users user  =  (Users)o;
                 if (user.getPassword().equals(password) )
                {
                    out.print( " 验证成功。 " );
                }
                 else
                {
                    out.print( " 密码错误。 " );
                }
            }
             else
            {
                out.print( " 用户名错误。 " );
            }
        }
         catch (Exception ex){
            out.print(ex.getMessage());
        }
         finally  {
            out.close();
        }

HQL语句对于表名有大小写匹配的关系，匹配的映射过来的类名。否则会报xxx not mapped....错误。其它的还是很简单的。