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
- 实例详解ASP中断开记录集的使用方法
- 代码指导用ASP木马实现FTP和解压缩
- 防范脚本入侵，你做好准备了吗？
- ASP中检查没有数据提交的页面
- ASP程序代码执行时间统计类
- ASP实现将长的标题用省略号收尾
- ASP常用代码剪辑
- 在ASP中利用“正则表达式” 对象实现UBB风格的论坛
- ASP批量生成静态页
- ASP生成柱型体，折线图，饼图源代码
- 马克斯电影站生成Rss Feed的代码
- ASP怎么谈到应用到类的？
- ASP：判断访问是否来自搜索引擎的函数
- ASP代码：rs.open语句详细说明
- 用asp自动解析网页中的图片地址
- ASP：True or False，明明白白你的If语句流程
- ASP实现在提交表单到数据库的同时发邮件通知
- “Web 匿名用户”帐户密码的位置
- ASP分页效果之优化
- 使用新云cms过程中的问题总结
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: 28 ::
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
