最近手头在写一个根据IP地址返回省份地区的代码，发现在使用纯真ip数据库的时候出现乱码，最后发现纯真
数据库是居于GBK编码的，而我的整个工程编码都是采用的UTF-8编码，两个走到一起肯定会出现乱码，所以只能改写纯真读取ip的类
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<%
'得到访问者IP
public Function getip()
Dim strIPAddr
If Request.ServerVariables("HTTP_X_FORWARDED_FOR") = "" OR InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), "unknown") > 0 Then
strIPAddr = Request.ServerVariables("REMOTE_ADDR")
ElseIf InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ",") > 0 Then
strIPAddr = Mid(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), 1, InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ",")-1)
actforip=Request.ServerVariables("REMOTE_ADDR")
ElseIf InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ";") > 0 Then
strIPAddr = Mid(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), 1, InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ";")-1)
actforip=Request.ServerVariables("REMOTE_ADDR")
Else
strIPAddr = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
actforip=Request.ServerVariables("REMOTE_ADDR")
End If
getip = Trim(Mid(strIPAddr, 1, 30))
End Function
' ============================================
' 返回IP地区信息
' ============================================
Function Look_Ip(IP)
Dim Wry, IPType, QQWryVersion, IpCounter
' 设置类对象
Set Wry = New TQQWry
' 开始搜索，并返回搜索结果
' 您可以根据 QQWry(IP) 返回值来判断该IP地址在数据库中是否存在，如果不存在可以执行其他的一些操作
' 比如您自建一个数据库作为追捕等，这里我就不详细说明了
IPType = Wry.QQWry(IP)
' Country：国家地区字段
' LocalStr：省市及其他信息字段
Look_Ip = Wry.Country & " " & Wry.LocalStr
End Function
' ============================================
' 返回QQWry信息
' ============================================
Function WryInfo()
Dim Wry, IPType, QQWry(1)
' 设置类对象
Set Wry = New TQQWry
IPType = Wry.QQWry("255.255.255.255")
' 读取数据库版本信息
QQWry(0) = Wry.Country & " " & Wry.LocalStr
' 读取数据库IP地址数目
QQWry(1) = Wry.RecordCount + 1
WryInfo = QQWry
End Function
' ============================================
' IP物理定位搜索类
' ============================================
Class TQQWry
' ============================================
' 变量声名
' ============================================
Dim Country, LocalStr, Buf, OffSet
Private StartIP, EndIP, CountryFlag
Public QQWryFile
Public FirstStartIP, LastStartIP, RecordCount
Private Stream, EndIPOff
' ============================================
' 类模块初始化
' ============================================
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Private Sub Class_Initialize
Country = ""
LocalStr = ""
StartIP = 0
EndIP = 0
CountryFlag = 0
FirstStartIP = 0
LastStartIP = 0
EndIPOff = 0
QQWryFile = Server.MapPath("/yxgame/date/qqwry.dat") 'QQ IP库路径，要转换成物理路径
End Sub
' ============================================
' IP地址转换成整数 ip
' ============================================
Function IPToInt(IP)
If Instr(IP,":")>0 Then IP="127.0.0.1" '当IP地址是::1这样的地址时返回本机地址
Dim IPArray, i
IPArray = Split(IP, ".", -1)
FOr i = 0 to 3
If Not IsNumeric(IPArray(i)) Then IPArray(i) = 0
If CInt(IPArray(i)) < 0 Then IPArray(i) = Abs(CInt(IPArray(i)))
If CInt(IPArray(i)) > 255 Then IPArray(i) = 255
Next
IPToInt = (CInt(IPArray(0))*256*256*256) + (CInt(IPArray(1))*256*256) + (CInt(IPArray(2))*256) + CInt(IPArray(3))
End Function
' ============================================
' 整数逆转IP地址
' ============================================
Function IntToIP(IntValue)
p4 = IntValue - Fix(IntValue/256)*256
IntValue = (IntValue-p4)/256
p3 = IntValue - Fix(IntValue/256)*256
IntValue = (IntValue-p3)/256
p2 = IntValue - Fix(IntValue/256)*256
IntValue = (IntValue - p2)/256
p1 = IntValue
IntToIP = Cstr(p1) & "." & Cstr(p2) & "." & Cstr(p3) & "." & Cstr(p4)
End Function
' ============================================
' 获取开始IP位置
' ============================================
Private Function GetStartIP(RecNo)
OffSet = FirstStartIP + RecNo * 7
Stream.Position = OffSet
Buf = Stream.Read(7)
EndIPOff = AscB(MidB(Buf, 5, 1)) + (AscB(MidB(Buf, 6, 1))*256) + (AscB(MidB(Buf, 7, 1))*256*256)
StartIP = AscB(MidB(Buf, 1, 1)) + (AscB(MidB(Buf, 2, 1))*256) + (AscB(MidB(Buf, 3, 1))*256*256) + (AscB(MidB(Buf, 4, 1))*256*256*256)
GetStartIP = StartIP
End Function
' ============================================
' 获取结束IP位置
' ============================================
Private Function GetEndIP()
Stream.Position = EndIPOff
Buf = Stream.Read(5)
EndIP = AscB(MidB(Buf, 1, 1)) + (AscB(MidB(Buf, 2, 1))*256) + (AscB(MidB(Buf, 3, 1))*256*256) + (AscB(MidB(Buf, 4, 1))*256*256*256)
CountryFlag = AscB(MidB(Buf, 5, 1))
GetEndIP = EndIP
End Function
' ============================================
' 获取地域信息，包含国家和和省市
' ============================================
Private Sub GetCountry(IP)
If (CountryFlag = 1 or CountryFlag = 2) Then
Country = GetFlagStr(EndIPOff + 4)
If CountryFlag = 1 Then
LocalStr = GetFlagStr(Stream.Position)
' 以下用来获取数据库版本信息
If IP >= IPToInt("255.255.255.0") And IP <= IPToInt("255.255.255.255") Then
LocalStr = GetFlagStr(EndIPOff + 21)
Country = GetFlagStr(EndIPOff + 12)
End If
Else
LocalStr = GetFlagStr(EndIPOff + 8)
End If
Else
Country = GetFlagStr(EndIPOff + 4)
LocalStr = GetFlagStr(Stream.Position)
End If
' 过滤数据库中的无用信息
Country = Trim(Country)
LocalStr = Trim(LocalStr)
If InStr(Country, "CZ88.NET") Then Country = "本地/局域网"
If InStr(LocalStr, "CZ88.NET") Then LocalStr = "本地/局域网"
End Sub
' ============================================
' 获取IP地址标识符
' ============================================
Private Function GetFlagStr(OffSet)
Dim Flag
Flag = 0
Do While (True)
Stream.Position = OffSet
Flag = AscB(Stream.Read(1))
If(Flag = 1 or Flag = 2 ) Then
Buf = Stream.Read(3)
If (Flag = 2 ) Then
CountryFlag = 2
EndIPOff = OffSet - 4
End If
OffSet = AscB(MidB(Buf, 1, 1)) + (AscB(MidB(Buf, 2, 1))*256) + (AscB(MidB(Buf, 3, 1))*256*256)
Else
Exit Do
End If
Loop
If (OffSet < 12 ) Then
GetFlagStr = ""
Else
Stream.Position = OffSet
GetFlagStr = GetStr()
End If
End Function
' ============================================这里获取代码最关键了
' 获取字串信息 (www.viming.com)
'-----utf-8-----------
Private Function GetStr()
dim c
getstr = ""
dim objstream
set objstream = server.createobject("adodb.stream")
objstream.type = 1
objstream.mode =3
objstream.open
c = stream.read(1)
do while (ascb(c)<>0 and not stream.eos)
objstream.write c
c = stream.read(1)
loop
objstream.position = 0
objstream.type = 2
objstream.charset = "gb2312"
getstr = objstream.readtext
objstream.close
set objstream = nothing
End Function
' ============================================
' 核心函数，执行IP搜索
' ============================================
Public Function QQWry(DotIP)
Dim IP, nRet
Dim RangB, RangE, RecNo
IP = IPToInt (DotIP)
Set Stream = CreateObject("ADodb.Stream")
Stream.Mode = 3
Stream.Type = 1
Stream.Open
Stream.LoadFromFile QQWryFile
Stream.Position = 0
Buf = Stream.Read(8)
FirstStartIP = AscB(MidB(Buf, 1, 1)) + (AscB(MidB(Buf, 2, 1))*256) + (AscB(MidB(Buf, 3, 1))*256*256) + (AscB(MidB(Buf, 4, 1))*256*256*256)
LastStartIP = AscB(MidB(Buf, 5, 1)) + (AscB(MidB(Buf, 6, 1))*256) + (AscB(MidB(Buf, 7, 1))*256*256) + (AscB(MidB(Buf, 8, 1))*256*256*256)
RecordCount = Int((LastStartIP - FirstStartIP)/7)
' 在数据库中找不到任何IP地址
If (RecordCount <= 1) Then
Country = "未知"
QQWry = 2
Exit Function
End If
RangB = 0
RangE = RecordCount
Do While (RangB < (RangE - 1))
RecNo = Int((RangB + RangE)/2)
Call GetStartIP (RecNo)
If (IP = StartIP) Then
RangB = RecNo
Exit Do
End If
If (IP > StartIP) Then
RangB = RecNo
Else
RangE = RecNo
End If
Loop
Call GetStartIP(RangB)
Call GetEndIP()
If (StartIP <= IP) And ( EndIP >= IP) Then
' 没有找到
nRet = 0
Else
' 正常
nRet = 3
End If
Call GetCountry(IP)
QQWry = nRet
End Function
' ============================================
' 类终结
' ============================================
Private Sub Class_Terminate
On ErrOr Resume Next
Stream.Close
If Err Then Err.Clear
Set Stream = Nothing
End Sub
End Class
%>
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最后就简单了，到需要用到显示的地方只需调用 look_ip()这个函数就可以了，哈哈。
最新内容请见作者的GitHub页：http://qaseven.github.io/
