用Java开发的购物车程序!

				
				
				
				
									reg.setUsername(request.getParameter("username"));
					reg.setPassword(request.getParameter("password1"));
					reg.setEmail(request.getParameter("email"));
					//PrintWriter dd=new PrintWriter(new FileOutputStream("c:\\dd.dat"));
					//dd.print(request.getParameter("username"));
					//dd.print(' ');
					//dd.print(request.getParameter("password1"));
					//dd.print(' ');
					//dd.print(request.getParameter("email"));
					//dd.close();
					
					flag=reg.regInfo();
					if(!flag)
					{
					response.sendRedirect("error.jsp?errmsg=这个用户名已被使用,请换个名字试试");
					return;
					}
					else
					{
					session.setAttribute("username",username);
					}
				%>