用jsp实现在线留言！采用MVC三层架构！

																																User_Name=request.getParameter("name");				User_Name=yy.ex_chinese(User_Name);				User_Password=request.getParameter("password");				User_Password=yy.ex_chinese(User_Password);				User_Password1=request.getParameter("password2");				User_Password1=yy.ex_chinese(User_Password1);				User_Sex=request.getParameter("sex");				User_Sex=yy.ex_chinese(User_Sex);				User_Email=request.getParameter("email");				User_Address=request.getParameter("address");				User_Address=yy.ex_chinese(User_Address);				User_Mobile=request.getParameter("mobile");				User_Oicq=request.getParameter("oicq");				User_Birthay=request.getParameter("birthday");				User_Birthay=yy.ex_chinese(User_Birthay);				User_Icon=request.getParameter("icon");				User_Sign=request.getParameter("sign");				User_Sign=yy.ex_chinese(User_Sign);								if (User_Email.equals(""))				{				  response.sendRedirect("err.jsp?id=11");				  return;				}else				{								}								if (!User_Password.equals(User_Password1))				{				response.sendRedirect("err.jsp?id=9");				return;				}				if ((User_Password.length()12))				{				response.sendRedirect("err.jsp?id=10");				return;				}												if ((User_Email.indexOf("@")				{				response.sendRedirect("err.jsp?id=13");				return;				}																												Connection con=yy.getConn();				Statement  stmt=con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);				sql="update 用户表 set 用户密码='"+User_Password+"',用户性别='"+User_Sex+"',用户邮箱='"+User_Email+"',居住地址='"+User_Address+"',手机号码='"+User_Mobile+"',Oicq='"+User_Oicq+"',出生日期='"+User_Birthay+"',用户图像='"+User_Icon+"',签名='"+User_Sign+"' where 用户名='"+session.getValue("UserName")+"'";								stmt.executeUpdate(sql);				out.println("正在处理您的用户信息，请稍后...");				%>