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ASP.NET 的IP帮助类
在Web开发中会出现需要调用客户IP的方法； 一般调用方法就是使用Request函数来获取；
代码如下
HttpContext.Current.Request.UserHostAddress.ToString()
不过想要放获取方法变得高大上一点的话还是得需要自己写一个IP帮助类；以下是代码
public class IPHelp { #region IP地址互转整数 /// <summary> /// 将IP地址转为整数形式 /// </summary> /// <returns>整数</returns> public static long IP2Long(IPAddress ip) { int x = 3; long o = 0; foreach (byte f in ip.GetAddressBytes()) { o += (long)f << 8 * x--; } return o; } /// <summary> /// 将整数转为IP地址 /// </summary> /// <returns>IP地址</returns> public static IPAddress Long2IP(long l) { byte[] b = new byte[4]; for (int i = 0; i < 4; i++) { b[3 - i] = (byte)(l >> 8 * i & 255); } return new IPAddress(b); } #endregion /// <summary> /// 获得客户端IP /// </summary> public static string ClientIP { get { bool isErr = false; string ip = "127.0.0.1"; try { string[] temp; if (HttpContext.Current.Request.ServerVariables["HTTP_X_ForWARDED_For"] == null) ip = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString(); else ip = HttpContext.Current.Request.ServerVariables["HTTP_X_ForWARDED_For"].ToString(); if (ip.Length > 15) isErr = true; else { temp = ip.Split('.'); if (temp.Length == 4) { for (int i = 0; i < temp.Length; i++) { if (temp[i].Length > 3) isErr = true; } } else isErr = true; } } catch { isErr = false; } if (isErr) return "1.1.1.1"; else return ip; } } }
需要调用来源IP的时候直接 调用ClientIP属性即可
var ipaddr =IPHelp.ClientIP;