程序師世界是廣大編程愛好者互助、分享、學習的平台,程序師世界有你更精彩!
首頁
編程語言
C語言|JAVA編程
Python編程
網頁編程
ASP編程|PHP編程
JSP編程
數據庫知識
MYSQL數據庫|SqlServer數據庫
Oracle數據庫|DB2數據庫
 程式師世界 >> 編程語言 >> .NET網頁編程 >> C# >> C#入門知識 >> C# 獲取IP及判斷IP是否在區間

C# 獲取IP及判斷IP是否在區間

編輯:C#入門知識

C# 獲取IP及判斷IP是否在區間。本站提示廣大學習愛好者:(C# 獲取IP及判斷IP是否在區間)文章只能為提供參考,不一定能成為您想要的結果。以下是C# 獲取IP及判斷IP是否在區間正文


話不多說,請看代碼:

/// <summary>
  /// 獲取客戶端IP
  /// </summary>
  /// <returns></returns>
  public static string GetClientIpAddress()
    {
      var httpContext = HttpContext.Current;
      if (httpContext.Request.ServerVariables == null)
      {
        return null;
      }
      var clientIp = httpContext.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] ??              httpContext.Request.ServerVariables["REMOTE_ADDR"];
      try
      {
        foreach (var hostAddress in Dns.GetHostAddresses(clientIp))
        {
          if (hostAddress.AddressFamily == AddressFamily.InterNetwork)
          {
            return hostAddress.ToString();
          }
        }
        foreach (var hostAddress in Dns.GetHostAddresses(Dns.GetHostName()))
        {
          if (hostAddress.AddressFamily == AddressFamily.InterNetwork)
          {
            return hostAddress.ToString();
          }
        }
      }
      catch (Exception ex)
      {

      }
      return clientIp;
    }
  /// <summary>
  /// ip是否在ip空間內
  /// </summary>
  /// <param name="ip"></param>
  /// <param name="ipSection"></param>
  /// <returns></returns>
  public static Boolean ipExistsInRange(String ip, String ipSection)
  {
    ipSection = ipSection.Trim();
    ip = ip.Trim();
    int idx = ipSection.IndexOf('-');
    String beginIP = ipSection.Substring(0, idx);
    String endIP = ipSection.Substring(idx + 1);
    return getIp2long(beginIP) <= getIp2long(ip) && getIp2long(ip) <= getIp2long(endIP);

  }
  public static long getIp2long(String ip)
  {
    ip = ip.Trim();
    String[] ips = ip.Split('.');
    long ip2long = 0L;
    for (int i = 0; i < 4; ++i)
    {
      ip2long = ip2long << 8 | Int64.Parse(ips[i]);
    }
    return ip2long;
  }
  public static long getIp2long2(String ip)
  {
    ip = ip.Trim();
    String[] ips = ip.Split('.');
    long ip1 = Int64.Parse(ips[0]);
    long ip2 = Int64.Parse(ips[1]);
    long ip3 = Int64.Parse(ips[2]);
    long ip4 = Int64.Parse(ips[3]);
    long ip2long = 1L * ip1 * 256 * 256 * 256 + ip2 * 256 * 256 + ip3 * 256 + ip4;
    return ip2long;
  }

以上就是本文的全部內容,希望本文的內容對大家的學習或者工作能帶來一定的幫助,同時也希望多多支持!

  1. 上一頁:
  2. 下一頁:
Copyright © 程式師世界 All Rights Reserved