count.asp

' 计数器的核心程序.

%
Set conn = Server.CreateObject("ADODB.Connection")
dbpath=server.MapPath("count.mdb")
conn.open "driver={Microsoft Access Driver (*.mdb)};dbq="DbPath
user=Request.QueryString("user")

sql="update counttable set curvalue=curvalue+1 where user='"user"'"

' 计数值加1.
conn.Execute sql
sql="select curvalue from counttable where user='"user"'"
set rs=conn.Execute(sql)

function chgimg(curvalue)
dim s,i,g
s=cstr(curvalue)
for i=1 to len(s)

' 定义chgimg函数,将计数值用图形表示.

g=g "img src=1/" mid(s,i,1) ".gif align=bottom>"

' 在正式使用计数器时,图片的路径要用实际路径.

next
chgimg=g
end function

toimg=chgimg(rs("curvalue"))
toimg="document.write(" "'" toimg "')"

' 调用chgimg函数传入计数器值.

Response.Write(toimg)

' 输出.
rs.close
set rs=nothing
conn.Close
set conn=nothing
%>

get.htm

' 申请表单.
form method="POST" action="getcl.asp">
p>用户名input type="text" name="user" size="20">/p>
p>计数器初始值input type="text" name="curvalue" size="20">/p>
p>主页地址input type="text" name="pageurl" size="20">/p>
p>input type="submit" value="提交" name="B1">input type="reset" value="重写" name="B2">/p>
/form>

getcl.asp

' 处理用户的输入的表单,并加入数据库.
%
Set conn = Server.CreateObject("ADODB.Connection")

' 建立与数据库的连接.
dbpath=server.MapPath("count.mdb")

' 取得数据库的实际路径.
conn.open "driver={Microsoft Access Driver (*.mdb)};dbq="DbPath
set rs=server.CreateObject("adodb.recordset")

user=Request.Form("user")
pageurl=Request.Form("pageurl")
curvalue=Request.Form("curvalue")

' 取得用户信息.

sql="select * from counttable where user='"user"'"

' 检查用户名是否存在.
rs.Open sql,conn,1,3
if not rs.EOF then
Response.Write"title>申请出错/title>"
Response.Write"噢,用户名已经存在!请重新选择.../title>"

Response.End

' 停止向下处理,要求用户重填.
end if

rs.AddNew
rs("user")=user
rs("pageurl")=pageurl
rs("curvalue")=curvalue
rs.Update

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