最近项目中需要用到获取Mac地址,发现网上的N种方法都有缺陷,没有准确定位Mac地址,不同的设备差异特别大。
经过一番研究后,发现最好的方式是截图命令获取:
ipconfig/all
使用CMD命令这将面临语言编码问题,于是一番查找,发现一下命令可以让系统默认采用美国英文来显示命令:
chcp 437
MacAddress = MacAddressHelper.GetMacByIpConfig() ?? MacAddressHelper.GetMacByWmi().FirstOrDefault() ?? "unknown";
/// <summary> /// Mac地址获取帮助类 2019.10.16 /// </summary> public class MacAddressHelper { ///<summary> /// 根据截取ipconfig /all命令的输出流获取网卡Mac,支持不同语言编码 ///</summary> ///<returns></returns> public static string GetMacByIpConfig() { List<string> macs = new List<string>(); var runCmd = Cmd.RunCmd("chcp 437&&ipconfig/all"); foreach (var line in runCmd.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Select(l => l.Trim())) { if (!string.IsNullOrEmpty(line)) { if (line.StartsWith("Physical Address")) { macs.Add(line.Substring(36)); } else if (line.StartsWith("DNS Servers") && line.Length > 36 && line.Substring(36).Contains("::")) { macs.Clear(); } else if (macs.Count > 0 && line.StartsWith("NetBIOS") && line.Contains("Enabled")) { return macs.Last(); } } } return macs.FirstOrDefault(); } ///<summary> /// 通过WMI读取系统信息里的网卡MAC ///</summary> ///<returns></returns> public static List<string> GetMacByWmi() { try { List<string> macs = new List<string>(); ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration"); ManagementObjectCollection moc = mc.GetInstances(); foreach (ManagementObject mo in moc) { if ((bool)mo["IPEnabled"]) { var mac = mo["MacAddress"].ToString(); macs.Add(mac); } } return macs; } catch (Exception e) { return null; } } ///<summary> /// 通过NetworkInterface读取网卡Mac ///</summary> ///<returns></returns> public static List<string> GetMacByNetworkInterface() { List<string> macs = new List<string>(); NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces(); foreach (NetworkInterface ni in interfaces) { macs.Add(ni.GetPhysicalAddress().ToString()); } return macs; } ///<summary> /// 通过SendARP获取网卡Mac /// 网络被禁用或未接入网络(如没插网线)时此方法失灵 ///</summary> ///<param name="remoteIP"></param> ///<returns></returns> public static string GetMacBySendArp(string remoteIP) { StringBuilder macAddress = new StringBuilder(); try { Int32 remote = inet_addr(remoteIP); Int64 macInfo = new Int64(); Int32 length = 6; SendARP(remote, 0, ref macInfo, ref length); string temp = Convert.ToString(macInfo, 16).PadLeft(12, '0').ToUpper(); int x = 12; for (int i = 0; i < 6; i++) { if (i == 5) { macAddress.Append(temp.Substring(x - 2, 2)); } else { macAddress.Append(temp.Substring(x - 2, 2) + "-"); } x -= 2; } return macAddress.ToString(); } catch { return macAddress.ToString(); } } [DllImport("Iphlpapi.dll")] private static extern int SendARP(Int32 dest, Int32 host, ref Int64 mac, ref Int32 length); [DllImport("Ws2_32.dll")] private static extern Int32 inet_addr(string ip); class Cmd { private static string CmdPath = @"C:\Windows\System32\cmd.exe"; /// <summary> /// 执行cmd命令 返回cmd窗口显示的信息 /// 多命令请使用批处理命令连接符: /// <![CDATA[ /// &:同时执行两个命令 /// |:将上一个命令的输出,作为下一个命令的输入 /// &&:当&&前的命令成功时,才执行&&后的命令 /// ||:当||前的命令失败时,才执行||后的命令]]> /// </summary> /// <param name="cmd">执行的命令</param> public static string RunCmd(string cmd) { cmd = cmd.Trim().TrimEnd('&') + "&exit";//说明:不管命令是否成功均执行exit命令,否则当调用ReadToEnd()方法时,会处于假死状态 using (Process p = new Process()) { p.StartInfo.FileName = CmdPath; p.StartInfo.UseShellExecute = false; //是否使用操作系统shell启动 p.StartInfo.RedirectStandardInput = true; //接受来自调用程序的输入信息 p.StartInfo.RedirectStandardOutput = true; //由调用程序获取输出信息 p.StartInfo.RedirectStandardError = true; //重定向标准错误输出 p.StartInfo.CreateNoWindow = true; //不显示程序窗口 p.Start();//启动程序 //向cmd窗口写入命令 p.StandardInput.WriteLine(cmd); p.StandardInput.AutoFlush = true; //获取cmd窗口的输出信息 string output = p.StandardOutput.ReadToEnd(); p.WaitForExit();//等待程序执行完退出进程 p.Close(); return output; } } } }
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