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下查询xml的实现代码
- 一个asp版XMLDOM操作类
- ASP XML编程objXML.async = False
- asp按关键字查询XML的代码
- asp下用fso和ado.stream写xml文件的方法
- SQL"不能为新插入的行确定标识"错误的解决方法
- asp 类型转换函数大全
- ASP存储过程开发应用详解
- asp 静态页面的另一种思路
- EasyASP v1.5发布(包含数据库操作类，原clsDbCtrl.asp)
- ASP访问数量统计代码
- asp中文数字验证码
- Ajax+asp应用实例 注册模块，表单提交
- 将ASP记录集输出成n列的表格形式显示的方法
- ASP 游标参数详解(ASP记录集)
- 关于ASP循环表格的问题之解答[比较详细]
- ASP Recordset 分页显示数据的方法(修正版)
- ASP ajax分页教程一
- Asp Oracle存储过程返回结果集的代码
- XMLHttp ASP远程获取网页内容代码
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: 219 ::
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
