繁體中文当前位置: 首页 > 图文教程 > 网络编程 > ASP > 用多种方法制作WEB页面的计数器
- ASP
- ASP视频教程:建立后台修改管理员密码页面
- ASP视频教程:建立数据库新闻表和添加新闻页面
- ASP动态include文件
- 用ASP开发网页需要牢记的注意事项
- 利用ASP发送和接收XML数据的处理方法
- Session对象失效的客户端解决方法
- 送给搞采集的兄弟一个sql语句
- 一次性下载远程页面上的所有内容
- aspjpeg组件使用方法
- AspJpeg V1.5.0 破解版
- asp模板引擎终结者(WEB开发之ASP模式)
- 浅谈 ASP 模板技术之参数传递
- Win2003下提高FSO的安全性
- 用XML+FSO+JS实现服务器端文件的选择
- 本人常用的分页代码
- 另类的文件上传解决方案
- 写了段批量抓取某个列表页的东东
- 水印测试(重新测试)
- Aspjpeg添加水印完整方法
- UBB编辑器
ASP 中的 用多种方法制作WEB页面的计数器
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-11-03 浏览: 159 ::
收藏到网摘: n/a
Do you like to know how many users visited your site? Creating a Web counter is very easy thing to do
using ASP. The only thing you have to do is to use an application server variable called count, this
variable will have the value zero when your application is started for the first time, and every time anew
visitor will come to your site the count variable will be incremented, the increment section will be
written in the Session_OnStart in the Global.asa through three steps:
¨ Lock the application server so no more than one visitor will try to increase it at the same time.
¨ Increment the count variable by one.
¨ Unlock the variable.
And that’s all what you have to do to create a simple counter and here is the code.
First let us do the Global.asa section:
<SCRIPT LANGUAGE=VBScript RUNAT=Server>
Sub Session_OnStart
' Lock the Application object
Application.Lock
' Increment the count
Application("count") = Application("count") + 1
' Unlock the Application object
Application.Unlock
End Sub
</SCRIPT>
And now to show the result you just need to retrieve the count variable like this in your web page:
<%@ language="vbscript"%>
<HTML>
<HEAD>
<TITLE>Counter Example 1</TITLE>
</HEAD>
<BODY>
<H1> You are the visitor number <%=Application("count")%></H1>
</BODY>
</HTML>
Another way to do it:
Ok that’s very nice, but what will happen if the application stops for any reason? You will lose all the
data stored in the application variables and that includes the count variable. To solve this problem I
will use another way, you need to store the value of the count variable with in a text file or database.
For me I prefer database so I will use an MS access database with a table of one field called count and
the field called counter of type NUMBER.
<%
' Declare the variables that will be used with our code
Dim Connection, RS, ConStr, Counts
' Create and open the database connection
Set Connection=Server.Createobjec t("ADODB.Connection")
ConStr=("DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" & Server.MapPath ("counter.mdb"))
Connection.Open ConStr
' Create the record set and retrive the counter value
Set RS = Connection.Execute("SELECT * FROM count")
' Increase the counter value by one
Counts=RS("counter")+1
' Update the counter value in the database
Set RS = Connection.Execute ("UPDATE count SET counter =" & Counts)
Connection.Close
%>
<HTML>
<HEAD>
<TITLE>Counter Example 2</TITLE>
</HEAD>
<BODY>
<H1>You are the visitor number <%=Counts%></H1>
</BODY>
</HTML>
What about Active users:
Some guys wants to know how many visitors are currently seeing the site, for that we will use another way,
we will create an application variable called active, and on each new session we will increase it by one
and when a session ends we will decrease it by one, and here is the code:
The Global.asa:
<SCRIPT LANGUAGE="VBScript" RUNAT="Server">
Sub Application_OnStart
'Create the variable that will hold the number of active visitors
Application("Active") = 0
End Sub
Sub Session_OnStart
'Increase the counter by one
Application.Lock
Application("Active") = Application("Active") + 1
评论 (0) All
