global.asp
<script language=vbscript runat=server>
sub Session_onstart
session("register")="false"
' 記錄用戶成功登錄的信息.
session("lognumber")=0
' 記錄用戶嘗試登錄的次數,最多允許嘗試三次.
session("prescript")=""
' 記錄用戶要訪問的頁面,以便登錄後返回該頁.
end sub
</script>
register.asp
<% if request.form("b1")="提交" then
set
conn=server.createobject("adodb.connection")
conn.open "asptest"
sql1="select * from permission where xm='"&&request.form("name") &&"' and mima='"&&request.form ("password")&&"'"
set rs=conn.execute(sql1)
if not rs.eof then
session("register")="true"
' 若數據庫中存在該用戶的信息,就記錄該用戶成功登錄的標記到register變量中.
rs.close
conn.close
response.redirect session("prescript")
' 成功登錄後自動返回剛才要訪問的頁面.
end if
if session("lognumber")<3 then
session("lognumber")=
session("lognumber")+1
response.redirect "register.asp"
else
response.redirect "sorry.asp"
end if
' 允許嘗試登錄三次,若都未成功,則顯示出錯頁面sorry.asp.
end if%>
<html><head></head>
<body bgcolor="#c0c0c0" >
<p align="center">
<marquee align="middle"
behavior="alternate" >星河影動歡迎您,請先登錄!</marquee><br>
<%if session("lognumber")>0 then%>
輸入有誤!請重新輸入姓名和口令.
<% end if%>
</p><hr>
<form action="register.asp" method="post" name="form1">
<div align="center"><p>姓名:
<input name="name" size="13"></p>
<p>口令:<input name="password"
size="13"type="password"></p></div>
<div align="right"><input type="submit" name="b1" value="提交" >
</div></form></body></html>
protect.asp
' 精彩的要限制的頁面.
<% if session("register")< >"true" then
session("prescript")=
request.servervariables("script_name")
response.redirect "register.asp"
end if%>
' 記錄該頁面的路徑到prescript變量中並強制用戶登錄.
<html><head>
<meta http-equiv="Content-Type"
content="text/html; charset=gb_2312-80"></head>
<body bgcolor="#00FFFF">
' 此處可注明該頁面的精彩內容.
</body></html>
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