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📁 较为详细的介绍了asp自定义的各种函数,方便asp的各种开发.
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            Response.Write ("IP:" &amp; IpSearch.IpAddress &amp; "<BR>") 
            <BR>&nbsp; &nbsp;' Response.Write ("IP转换为数值:" &amp; 
            IpSearch.CLongIP(IpSearch.IpAddress) &amp; "<BR>") <BR>&nbsp; 
            &nbsp;' Response.Write ("数值还原成IP:" &amp; 
            IpSearch.CStringIP(IpSearch.CLongIP(IpSearch.IpAddress)) &amp; 
            "<BR>") <BR>&nbsp; &nbsp;' Response.Write ("&lt;hr&gt;") <BR>&nbsp; 
            &nbsp;' next <BR>&nbsp; &nbsp;' next <BR>&nbsp; &nbsp;' next 
            <BR>&nbsp; &nbsp;'next <BR>&nbsp; &nbsp;%&gt; <BR>&nbsp; &nbsp;&lt;% 
            <BR>&nbsp; &nbsp;Class clsIpSearch <BR>&nbsp; 
            &nbsp;'################################################################## 
            <BR>&nbsp; &nbsp;'声明:本程序采用的数据为网络上著名的IP工具软件《追捕》作者“冯志宏” <BR>&nbsp; 
            &nbsp;'先生所精心搜集整理。 <BR>&nbsp; &nbsp;'《追捕》数据库的转换方法: <BR>&nbsp; 
            &nbsp;'修改wry.dll 文件后缀名称为 wry.dbf <BR>&nbsp; &nbsp;'方法一: <BR>&nbsp; 
            &nbsp;' 启动Access 数据,选择打开数据库,选择打开的文件类型为“dBASE 5 (*.dbf)” <BR>&nbsp; 
            &nbsp;' 打开wry.dbf文件,选择《工具》菜单下的《数据库实用工具》中的《转换数据库》 <BR>&nbsp; &nbsp;' 
            选择《转换为 Access 97 格式(版本可选)》功能,保存文件即可成为MDB格式。 <BR>&nbsp; &nbsp;'方法二: 
            <BR>&nbsp; &nbsp;' 使用SQL Server提供的《导入和导出数据》向导。 <BR>&nbsp; &nbsp;' 
            方法简要说明:在ODBC 控制面板中设置指向wry.dbf的DSN。 <BR>&nbsp; &nbsp;' 
            使用《导入和导出数据》向导,选择其正确的驱动程序和要导入的库即可。 <BR>&nbsp; &nbsp;' 
            或者直接导入由方法一生成的MDB文件入库。 <BR>&nbsp; &nbsp;'方法三: <BR>&nbsp; &nbsp;' 
            使用Access 打开wry.dbf 文件后将自动通过MDB库引用原库数据。 <BR>&nbsp; &nbsp;' <BR>&nbsp; 
            &nbsp;'未安装其他数据库平台,其他方法欠考虑。 <BR>&nbsp; &nbsp;'###################### 
            类说明 #################################### <BR>&nbsp; &nbsp;'# IP 
            所在地搜索类 <BR>&nbsp; &nbsp;'# ConnectionString 
            为数据库连接声明,默认声明同级目录的wry.mdb <BR>&nbsp; &nbsp;'# IpAddress 请设置为进行搜索的IP 
            地址,默认取当前访问者IP <BR>&nbsp; &nbsp;'# 类建立方法 <BR>&nbsp; &nbsp;'# Dim 
            objVal '声明一个变量 <BR>&nbsp; &nbsp;'# Set objVal = New clsIpSearch 
            '建立类对象 <BR>&nbsp; &nbsp;'# Response.Write (objVal.IpAddress) 
            '显示当前访问者IP <BR>&nbsp; &nbsp;'# IP 搜索类方法列表: <BR>&nbsp; &nbsp;'# 
            .Valid_IP 'IP 地址正确性效验 <BR>&nbsp; &nbsp;'# 参数:IP 'IP 数值或者字符串 
            <BR>&nbsp; &nbsp;'# .CLongIP '将IP地址转换为长整型的数值 <BR>&nbsp; &nbsp;'# 
            参数:asNewIP '要转换的IP地址字符串 <BR>&nbsp; &nbsp;'# .CStringIP '将长整型的数值转换为IP 
            <BR>&nbsp; &nbsp;'# 参数:anNewIP '要还原为IP地址的数值 <BR>&nbsp; &nbsp;'# 
            .GetClientIP '取访问者的IP <BR>&nbsp; &nbsp;'# .GetIpAddrInfo 
            '得到设置过IpAddRess属性的IP所在地 <BR>&nbsp; &nbsp;'# 属性列表(自动初始化): <BR>&nbsp; 
            &nbsp;'# ConnEctionString 'ADo 访问数据库连接说明 <BR>&nbsp; &nbsp;'# 
            IpAddress '要操作的IP地址 <BR>&nbsp; &nbsp;'# 内部错误处理: <BR>&nbsp; &nbsp;'# 
            欠缺,未做,请自行补充。 <BR>&nbsp; 
            &nbsp;'################################################################## 
            <BR>&nbsp; &nbsp; <BR>&nbsp; &nbsp; Public ConnectionString 
            <BR>&nbsp; &nbsp; Public IpAddress <BR>&nbsp; &nbsp; Private DBConn 
            '连接对象,模块级声明 <BR>&nbsp; &nbsp; '──────────────────────────────── 
            <BR>&nbsp; &nbsp; ' 类初始化 <BR>&nbsp; &nbsp; Private Sub 
            Class_initialize() <BR>&nbsp; &nbsp; ' 这里建立的是通过“数据转换--方法一”生成的mdb 库文件 
            <BR>&nbsp; &nbsp; ConnectionString="DRIVER={Microsoft Access Driver 
            (*.mdb)};DBQ=" &amp; Server.MapPath("wry.mdb") <BR>&nbsp; &nbsp; 
            IpAddress = GetClientIP() <BR>&nbsp; &nbsp; Set DBConn = 
            OpenConnection() <BR>&nbsp; &nbsp; End Sub <BR>&nbsp; &nbsp; 
            '──────────────────────────────── <BR>&nbsp; &nbsp; ' 类注销 <BR>&nbsp; 
            &nbsp; Private Sub Class_Terminate() <BR>&nbsp; &nbsp; 
            ConnectionString = Null <BR>&nbsp; &nbsp; IpAddress = Null 
            <BR>&nbsp; &nbsp; DBConn.Close <BR>&nbsp; &nbsp; Set DBConn = 
            Nothing <BR>&nbsp; &nbsp; End Sub <BR>&nbsp; &nbsp; 
            '──────────────────────────────── <BR>&nbsp; &nbsp; ' 建立一个连接 
            <BR>&nbsp; &nbsp; Private Function OpenConnection() <BR>&nbsp; 
            &nbsp; Dim tmpConn <BR>&nbsp; &nbsp; Set 
            tmpConn=Server.CreateObject("ADODB.Connection") <BR>&nbsp; &nbsp; 
            tmpConn.Open ConnectionString <BR>&nbsp; &nbsp; Set 
            OpenConnection=tmpConn <BR>&nbsp; &nbsp; Set tmpConn=nothing 
            <BR>&nbsp; &nbsp; End Function <BR>&nbsp; &nbsp; 
            '──────────────────────────────── <BR>&nbsp; &nbsp; ' 
            执行一个SQL命令,并返回一个数据集对象 <BR>&nbsp; &nbsp; Private Function 
            SQLExeCute(strSql) <BR>&nbsp; &nbsp; Dim Rs <BR>&nbsp; &nbsp; Set 
            Rs=DBConn.ExeCute(strSQL) <BR>&nbsp; &nbsp; Set SQLExeCute = Rs 
            <BR>&nbsp; &nbsp; Set Rs=nothing <BR>&nbsp; &nbsp; End Function 
            <BR>&nbsp; &nbsp; '──────────────────────────────── <BR>&nbsp; 
            &nbsp; 'IP 效验 <BR>&nbsp; &nbsp; Public Function Valid_IP(ByVal IP) 
            <BR>&nbsp; &nbsp; Dim i <BR>&nbsp; &nbsp; Dim dot_count <BR>&nbsp; 
            &nbsp; Dim test_octet <BR>&nbsp; &nbsp; Dim byte_check <BR>&nbsp; 
            &nbsp; IP = Trim(IP) <BR>&nbsp; &nbsp; ' 确认IP长度 <BR>&nbsp; &nbsp; If 
            Len(IP) &lt; &amp;H08 Then <BR>&nbsp; &nbsp; Valid_IP = False 
            <BR>&nbsp; &nbsp; '显示错误提示 <BR>&nbsp; &nbsp; Exit Function <BR>&nbsp; 
            &nbsp; End If <BR>&nbsp; &nbsp; <BR>&nbsp; &nbsp; i = &amp;H01 
            <BR>&nbsp; &nbsp; dot_count = &amp;H00 <BR>&nbsp; &nbsp; For i = 1 
            To Len(IP) <BR>&nbsp; &nbsp; If Mid(IP, i, &amp;H01) = "." Then 
            <BR>&nbsp; &nbsp; ' 增加点的记数值 <BR>&nbsp; &nbsp; ' 并且设置text_octet 值为空 
            <BR>&nbsp; &nbsp; dot_count = dot_count + &amp;H01 <BR>&nbsp; &nbsp; 
            test_octet = "" <BR>&nbsp; &nbsp; If i = Len(IP) Then <BR>&nbsp; 
            &nbsp; ' 如果点在结尾则IP效验失败 <BR>&nbsp; &nbsp; Valid_IP = False <BR>&nbsp; 
            &nbsp; ' 显示错误提示 <BR>&nbsp; &nbsp; Exit Function <BR>&nbsp; &nbsp; 
            End If <BR>&nbsp; &nbsp; Else <BR>&nbsp; &nbsp; test_octet = 
            test_octet &amp; Mid(IP, i, &amp;H01) <BR>&nbsp; &nbsp; ' 
            使用错误屏蔽来检查数据段值的正确性 <BR>&nbsp; &nbsp; On Error Resume Next <BR>&nbsp; 
            &nbsp; ' 进行强制类型转换 <BR>&nbsp; &nbsp; ' 如果转换失败就可通过检查Err是否为真来确认 
            <BR>&nbsp; &nbsp; byte_check = CByte(test_octet) <BR>&nbsp; &nbsp; 
            If (Err) Then <BR>&nbsp; &nbsp; ' 强制类型转换产生错误 <BR>&nbsp; &nbsp; ' 
            所取段值的数据不为数值 <BR>&nbsp; &nbsp; ' 或所取段值的数据长度大于&amp;HFF <BR>&nbsp; 
            &nbsp; ' 则类型不为byte类型 <BR>&nbsp; &nbsp; ' IP 地址的正确性为假 <BR>&nbsp; 
            &nbsp; Valid_IP = False <BR>&nbsp; &nbsp; Exit Function <BR>&nbsp; 
            &nbsp; End If <BR>&nbsp; &nbsp; End If <BR>&nbsp; &nbsp; Next 
            <BR>&nbsp; &nbsp; <BR>&nbsp; &nbsp; ' 通过上一步的验证,现在应该要检查小点是否有3个 
            <BR>&nbsp; &nbsp; If dot_count &lt;&gt; &amp;H03 Then <BR>&nbsp; 
            &nbsp; Valid_IP = False <BR>&nbsp; &nbsp; Exit Function <BR>&nbsp; 
            &nbsp; End If <BR>&nbsp; &nbsp; ' 一切正常,那么该IP为正确的IP地址 <BR>&nbsp; 
            &nbsp; Valid_IP = True <BR>&nbsp; &nbsp; End Function <BR>&nbsp; 
            &nbsp; '──────────────────────────────── <BR>&nbsp; &nbsp; ' 
            转换一个数值为IP <BR>&nbsp; &nbsp; Public Function CStringIP(ByVal anNewIP) 
            <BR>&nbsp; &nbsp; Dim lsResults <BR>&nbsp; &nbsp; Dim lnTemp 
            <BR>&nbsp; &nbsp; Dim lnIndex <BR>&nbsp; &nbsp; For lnIndex = 
            &amp;H03 To &amp;H00 Step -&amp;H01 <BR>&nbsp; &nbsp; lnTemp = 
            Int(anNewIP / (&amp;H100 ^ lnIndex)) <BR>&nbsp; &nbsp; lsResults = 
            lsResults &amp; lnTemp &amp; "." <BR>&nbsp; &nbsp; anNewIP = anNewIP 
            - (lnTemp * (&amp;H100 ^ lnIndex)) <BR>&nbsp; &nbsp; Next <BR>&nbsp; 
            &nbsp; lsResults = Left(lsResults, Len(lsResults) - &amp;H01) 
            <BR>&nbsp; &nbsp; CStringIP = lsResults <BR>&nbsp; &nbsp; End 
            function <BR>&nbsp; &nbsp; '──────────────────────────────── 
            <BR>&nbsp; &nbsp; ' 转换一个IP到数值 <BR>&nbsp; &nbsp; Public Function 
            CLongIP(ByVal asNewIP) <BR>&nbsp; &nbsp; Dim lnResults <BR>&nbsp; 
            &nbsp; Dim lnIndex <BR>&nbsp; &nbsp; Dim lnIpAry <BR>&nbsp; &nbsp; 
            lnIpAry = Split(asNewIP, ".", &amp;H04) <BR>&nbsp; &nbsp; For 
            lnIndex = &amp;H00 To &amp;H03 <BR>&nbsp; &nbsp; if Not lnIndex = 
            &amp;H03 Then <BR>&nbsp; &nbsp; lnIpAry(lnIndex) = lnIpAry(lnIndex) 
            * (&amp;H100 ^ (&amp;H03 - lnIndex)) <BR>&nbsp; &nbsp; End if 
            <BR>&nbsp; &nbsp; lnResults = lnResults + lnIpAry(lnIndex) 
            <BR>&nbsp; &nbsp; Next <BR>&nbsp; &nbsp; CLongIP = lnResults 
            <BR>&nbsp; &nbsp; End function <BR>&nbsp; &nbsp; 
            '──────────────────────────────── <BR>&nbsp; &nbsp; ' 取Client IP 
            <BR>&nbsp; &nbsp; Public Function GetClientIP() <BR>&nbsp; &nbsp; 
            dim uIpAddr <BR>&nbsp; &nbsp; ' 本函数参考webcn.Net/AspHouse 
            文献&lt;取真实的客户IP&gt; <BR>&nbsp; &nbsp; uIpAddr = 
            Request.ServerVariables("HTTP_X_FORWARDED_FOR") <BR>&nbsp; &nbsp; If 
            uIpAddr = "" Then uIpAddr = Request.ServerVariables("REMOTE_ADDR") 
            <BR>&nbsp; &nbsp; GetClientIP = uIpAddr <BR>&nbsp; &nbsp; uIpAddr = 
            "" <BR>&nbsp; &nbsp; End function <BR>&nbsp; &nbsp; 
            '──────────────────────────────── <BR>&nbsp; &nbsp; ' 读取IP所在地的信息 
            <BR>&nbsp; &nbsp; Public function GetIpAddrInfo() <BR>&nbsp; &nbsp; 
            Dim tmpIpAddr <BR>&nbsp; &nbsp; Dim IpAddrVal <BR>&nbsp; &nbsp; Dim 
            ic,charSpace <BR>&nbsp; &nbsp; Dim tmpSQL <BR>&nbsp; &nbsp; 
            charSpace = "" <BR>&nbsp; &nbsp; IpAddrVal = IpAddress <BR>&nbsp; 
            &nbsp; If Not Valid_IP(IpAddrVal) Then <BR>&nbsp; &nbsp; 
            GetIpAddrInfo =NULL <BR>&nbsp; &nbsp; Exit Function <BR>&nbsp; 
            &nbsp; End If <BR>&nbsp; &nbsp; '将IP字符串劈开成数组好进行处理 <BR>&nbsp; &nbsp; 
            tmpIpAddr = Split(IpAddrVal,".",-1,1) <BR>&nbsp; &nbsp; For ic = 
            &amp;H00 To Ubound(tmpIpAddr) <BR>&nbsp; &nbsp; '补位操作,保证每间隔满足3个字符 
            <BR>&nbsp; &nbsp; Select Case Len(tmpIpAddr(ic)) <BR>&nbsp; &nbsp; 
            Case &amp;H01 :charSpace = "00" <BR>&nbsp; &nbsp; Case &amp;H02 
            :charSpace = "0" <BR>&nbsp; &nbsp; Case Else :charSpace = "" 
            <BR>&nbsp; &nbsp; End Select <BR>&nbsp; &nbsp; tmpIpAddr(ic) = 
            charSpace &amp; tmpIpAddr(ic) <BR>&nbsp; &nbsp; Next <BR>&nbsp; 
            &nbsp; IpAddrVal = tmpIpAddr(&amp;H00) &amp; "." &amp; 
            tmpIpAddr(&amp;H01) &amp; "." &amp; tmpIpAddr(&amp;H02) &amp; "." 
            &amp; tmpIpAddr(&amp;H03) <BR>&nbsp; &nbsp; <BR>&nbsp; &nbsp; 
            '以下为查询,IP地址库基于《追捕》的IP数据库,感谢"冯志宏"先生的贡献 <BR>&nbsp; &nbsp; '库结构如下: 
            <BR>&nbsp; &nbsp; 'CREATE TABLE [dbo].[wry] ( <BR>&nbsp; &nbsp; ' 
            [STARTIP] [nvarchar] (17) COLLATE Chinese_PRC_CI_AS NULL , --起始IP段 
            <BR>&nbsp; &nbsp; ' [ENDIP] [nvarchar] (17) COLLATE 
            Chinese_PRC_CI_AS NULL , --终止IP段 <BR>&nbsp; &nbsp; ' [COUNTRY] 
            [nvarchar] (16) COLLATE Chinese_PRC_CI_AS NULL , --国家或者地区 <BR>&nbsp; 
            &nbsp; ' [LOCAL] [nvarchar] (54) COLLATE Chinese_PRC_CI_AS NULL , 
            --本地地址 <BR>&nbsp; &nbsp; ' [THANK] [nvarchar] (23) COLLATE 
            Chinese_PRC_CI_AS NULL --感谢修正IP地址用户姓名 <BR>&nbsp; &nbsp; ') ON 
            [PRIMARY] <BR>&nbsp; &nbsp; '经过分析库的数据存放结构,总结出准确的查询方法,具体看下面的查询过程 
            <BR>&nbsp; &nbsp; tmpSQL = "select * from wry where (startIP&lt;='" 
            &amp; IpAddrVal &amp; "') and (ENDIP&gt;='" &amp; IpAddrVal &amp; 
            "') " &amp; _ <BR>&nbsp; &nbsp; " and left(startIP," &amp; 
            Len(tmpIpAddr(&amp;H00)) &amp; ") = '" &amp; tmpIpAddr(&amp;H00) 
            &amp; "'" &amp; _ <BR>&nbsp; &nbsp; " and left(endip," &amp; 
            Len(tmpIpAddr(&amp;H00)) &amp; ")='" &amp; tmpIpAddr(&amp;H00) &amp; 
            "'" <BR>&nbsp; &nbsp; charSpace = GetDbIpInfo(tmpSQL) <BR>&nbsp; 
            &nbsp; If Len(charSpace)=&amp;H00 Then <BR>&nbsp; &nbsp; 
            GetIpAddrInfo = NULL <BR>&nbsp; &nbsp; Else <BR>&nbsp; &nbsp; 
            GetIpAddrInfo = charSpace <BR>&nbsp; &nbsp; End If <BR>&nbsp; &nbsp; 
            charSpace = Null <BR>&nbsp; &nbsp; tmpSQL = Null <BR>&nbsp; &nbsp; 
            end function <BR>&nbsp; &nbsp; '──────────────────────────────── 
            <BR>&nbsp; &nbsp; ' 返回数据查询的字符串 <BR>&nbsp; &nbsp; Private function 
            GetDbIpInfo(byVal sql) <BR>&nbsp; &nbsp; Dim OpenIpSearchRs 
            <BR>&nbsp; &nbsp; Dim result <BR>&nbsp; &nbsp; Set OpenIpSearchRs = 
            SQLExeCute(sql) <BR>&nbsp; &nbsp; If Not OpenIpSearchRs.Eof Then 
            <BR>&nbsp; &nbsp; result = NullToSpace(OpenIpSearchRs("COUNTRY")) 
            &amp; "," &amp; NullToSpace(OpenIpSearchRs("LOCAL")) &amp; "," &amp; 
            NullToSpace(OpenIpSearchRs("THANK")) <BR>&nbsp; &nbsp; Else 
            <BR>&nbsp; &nbsp; result = NULL <BR>&nbsp; &nbsp; End If <BR>&nbsp; 
            &nbsp; OpenIpSearchRs.Close <BR>&nbsp; &nbsp; Set 
            OpenIpSearchRs=Nothing <BR>&nbsp; &nbsp; GetDbIpInfo = result 
            <BR>&nbsp; &nbsp; End function <BR>&nbsp; &nbsp; 
            '──────────────────────────────── <BR>&nbsp; &nbsp; ' 将数据库空记录转换为空字符 
            <BR>&nbsp; &nbsp; Private function NullToSpace(byVal rsStr) 
            <BR>&nbsp; &nbsp; If isNull(rsStr) Then <BR>&nbsp; &nbsp; 
            NullToSpace = "" <BR>&nbsp; &nbsp; Else <BR>&nbsp; &nbsp; 
            NullToSpace = Trim(rsStr) <BR>&nbsp; &nbsp; End If <BR>&nbsp; &nbsp; 
            End Function <BR>&nbsp; &nbsp;End Class <BR>&nbsp; &nbsp;%&gt; 
            <BR>&nbsp; <BR>&nbsp; &nbsp; <BR></TD></TR>
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