取得Client真實IP

JDP

method 1

1. '==讀取IP==
   
2.      Dim strIPAddr As String
   
3.      Dim id As Integer
   
4.      If Request.ServerVariables("HTTP_X_FORWARDED_FOR") = "" Or InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), "unknown") > 0 Then
   
5.      strIPAddr = Request.ServerVariables("REMOTE_ADDR")
   
6.      ElseIf InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ",") > 0 Then
   
7.      strIPAddr = Mid(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), 1, InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), ",") - 1)
   
8.      ElseIf InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), "；") > 0 Then
   
9.      strIPAddr = Mid(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), 1, InStr(Request.ServerVariables("HTTP_X_FORWARDED_FOR"), "；") - 1)
   
10.      Else
    
11.      strIPAddr = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
    
12.      End If
    
13.      '==讀出ID最後一號==
    
14.      SqlDataSource5.DataSourceMode = SqlDataSourceMode.DataReader
    
15.      Dim args As New DataSourceSelectArguments
    
16.      Dim I_DR As IDataReader = CType(SqlDataSource5.Select(args), IDataReader)
    
17.      I_DR.Read()
    
18.      id = Val(I_DR.Item("log_id").ToString) + 1
    
19.      I_DR.Close()
    
20.      I_DR.Dispose()
    
21. 
    
22. '最後只要印出下面這行就可以看到IP了。
    
23. Mid(strIPAddr, 1, 30).Trim.ToString

複製代碼

method 2

1. // 獲得客戶IP，透視代理
   
2. public static string GetClientIP()
   
3. {
   
4.    string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
   
5.    if (null == result || (result != null && String.IsNullOrEmpty(result)))
   
6.    {
   
7.       result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
   
8.    }
   
9.    if (null == result || (result != null && String.IsNullOrEmpty(result)))
   
10.    {
    
11.       result = HttpContext.Current.Request.UserHostAddress;
    
12.    }
    
13.    return result.Split(new Char[] { ',' })[0];
    
14. }

複製代碼

Reference: http://www.programmer-club.com.tw/showSameTitleN/aspdotnet/19193.html