后台登陆后一片空白不能跳转

[xzf888]

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">这行去掉后正常，
如果编码为gb2312 显示为空白，改成UTF-8出现错误，报未结束的字符串常量
这不知道是什么原因？
希望老师们指点, 万分感谢！

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<!--#include file="../inc/Fzwlt_AdminConn.asp"-->
<!--#include file="images/login/md5/md5.asp" -->
<!--#include file="images/login/md5/CFS.asp" -->
<%
if trim(request("OK"))="1" then
Response.Cookies("Fzwlt")("strUsername") = Trim(request("username"))
Response.Cookies("Fzwlt")("strPassword") = trim(request("password")) 
Response.Cookies("Fzwlt")("OKCookie")=trim(request("OK"))
'Response.cookies("Fzwlt").expires=date+365
Response.Cookies("Fzwlt").Expires=DateAdd("y",30,Now())
%>
<%
Dim DBC,RsLoginObj,RsLogObj
Dim UserName,UserPass,VerifyCode,System,SqlLog,SqlLogin,Url
Url = Request("UrlAddress")
if Url = "" then
	Url = "Fzwlt_MainFrame.asp"
end if
'Response.Write(Url)
'Response.End

UserName = Replace(Trim(Request.Form("UserName")),"'","''")
UserPass1 = CfsEnCode(Replace(Trim(Request.Form("Password")),"'","''"))
VerifyCode = Replace(Trim(Request("verifycode")),"'","")
UserPass=md5(UserPass1)
if UserName = "" or  UserPass = "" then 
	Response.Redirect("Fzwlt_Errorp.asp?ErrDescription=用户名和密码不能为空！")
	Response.End
end if

if Instr(request.form("UserName"),"=")>0 or Instr(request.form("UserName"),"%")>0 or Instr(request.form("UserName"),chr(32))>0 or Instr(request.form("UserName"),"?")>0 or Instr(request.form("UserName"),"&")>0 or Instr(request.form("UserName"),";")>0 or Instr(request.form("UserName"),",")>0 or Instr(request.form("UserName"),"'")>0 or Instr(request.form("UserName"),",")>0 or Instr(request.form("UserName"),chr(34))>0 or Instr(request.form("UserName"),chr(9))>0 or Instr(request.form("UserName"),"")>0 or Instr(request.form("UserName"),"$")>0 then
	response.write"<script>alert('错误提示信息!\n\n用户名或密码不能在非法字符！点击确定返回重新输入！');javascript:history.go(-1);</script>"
	response.End()
end if

if  VerifyCode <> CStr(Session("GetCode"))  then 
	response.write"<script>alert('错误提示信息!\n\n验证码错误！点击确定返回重新输入！');javascript:history.go(-1);</script>"
	Response.End
end if
if request("verifycode")="" then
	response.write"<script>alert('错误提示信息!\n\n请输入验证码！点击确定返回重新输入！');javascript:history.go(-1);</script>"
	Response.End
elseif Session("GetCode")="9999" then
	Session("GetCode")=""
elseif Session("GetCode")="" then
	response.write"<script>alert('错误提示信息!\n\n请不要重复提交！点击确定返回重新输入！');javascript:history.go(-1);</script>"
	Response.End
elseif cstr(Session("GetCode"))<>cstr(trim(request("verifycode"))) then
	response.write"<script>alert('错误提示信息!\n\n你输入的验证码和系统产生的不一致！点击确定返回重新输入！');javascript:history.go(-1);</script>"
	Response.End
end if
   Session("GetCode")=""
set RsLoginObj = server.CreateObject ("ADODB.RecordSet")
SqlLogin = "select * from Fzwlt_Admin where UserName='"&UserName&"' and  password='"&UserPass&"'"
RsLoginObj.Open SqlLogin,Conn,1,1
Session("Fzwlt_flag")=RsLoginObj("Fzwlt_flag")
Session("loginnos")=RsLoginObj("loginnos")
Session("loginip")=RsLoginObj("loginip")
Session("Csny")=RsLoginObj("Csny")
Conn.Execute("Update [Fzwlt_Admin] Set Csny='"&now()&"',loginnos=loginnos+1,loginip='"&Request.ServerVariables("REMOTE_ADDR")&"' Where UserName='"&UserName&"'")

System = Request.ServerVariables("HTTP_USER_AGENT")
if Instr(System,"Windows NT 5.0") then
	System = "Win2000"
elseif Instr(System,"Windows NT 5.2") then
	System="Win2003"
elseif Instr(System,"Windows NT 5.1") then
	System = "WinXP"
elseif Instr(System,"Windows NT") then
	System = "WinNT"
elseif Instr(System,"Windows 9") then
	System = "Win9x"
elseif Instr(System,"unix") or instr(System,"linux") or instr(System,"SunOS") or instr(System,"BSD") then
	System = "类Unix"
elseif Instr(System,"Mac") then
	System = "Mac"
else
	System = "Other"
end if

if Not RsLoginObj.EOF then
   if RsLoginObj("Lock")=1 then
	response.write"<script>alert('错误提示信息!\n\n你的帐号已锁定或无权进入！\n\n点击确定返回！');javascript:history.go(-1);</script>"
	Response.End
   end if
   Session("UserName") = UserName
   Session("PassWord") = UserPass
   Session("AdminID") = RsLoginObj("AdminID")
   Response.Cookies("Foosun")("UserName") = UserName
   Response.Cookies("Foosun")("Password") = UserPass
   Set RsLogObj = Server.Createobject("adodb.recordset")
   SqlLog = "select * from Fzwlt_Log"
   RsLogObj.open SqlLog,Conn,3,3
   RsLogObj.addnew
   RsLogObj("LogUser")=UserName
   RsLogObj("LogIP")=request.ServerVariables("Remote_Addr")
   RsLogObj("OS")=System
   RsLogObj("Result") = 1
   RsLogObj("Csny") = now()
   RsLogObj.update
   RsLogObj.close
   set RsLogObj = Nothing
   Response.Redirect(Url) 
   Response.End
else
   set RsLogObj = Server.Createobject("adodb.recordset")
   SqlLog = "select * from Fzwlt_Log"
   RsLogObj.open SqlLog,Conn,3,3
   RsLogObj.AddNew
   RsLogObj("LogUser") = Request.Form("UserName")
   RsLogObj("LogIP") = request.ServerVariables("Remote_Addr")
   RsLogObj("OS") = System
   RsLogObj("Errorpas") = Request.Form("Password")
   RsLogObj("Result") = false
   RsLogObj("Csny") = now()
   RsLogObj.update
   RsLogObj.close
   set RsLogObj = Nothing
	response.write"<script>alert('错误提示信息!\n\n非法登录, 请检查用户名和密码的是否正确！\n\n点击确定返回重新输入！');javascript:history.go(-1);</script>"
	Response.End
end if
%>

[Lin_bai_]

UTF-8 字多，有各种国家的语言，但是保存尺寸大，文件臃肿； gb2312字少，只用中文和少数外语和符号，但是尺寸小，文件小巧。 希望对你有帮助

[Lin_bai_]

可以去网上看下UTF-8 gb2312的区别