java/jsp獲得客戶端(IE)網卡MAC地址的方法大概有三種。
1、通過命令方式,在客戶端執行Ipconfig 等等。(java/jsp)
2、通過ActiveX的方法。(jsp)
3、通過向137的端口發送查詢指令的方法。(java/jsp)
簡介:
第一種方法,在真正用到時候不知道為什么獲得mac地址的指令阻塞了,不往下繼續執行。而且速度是這三種方法中最慢的一種。
代碼如下:
String sip=""; String smac=""; sip = request.getHeader("x-forwarded-for"); if(sip == null ||sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) { sip = request.getHeader("proxy-Client-IP"); } if (sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) { sip = request.getHeader("WL-Proxy-Client-IP"); } if (sip == null ||sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) { sip = request.getRemoteAddr(); } if(!"127.0.0.1".equals(sip)) //本機過濾掉 { Process process = Runtime.getRuntime().exec("nbtstat -a " + sip); InputStreamReader ir = new InputStreamReader(process.getInputStream()); LineNumberReader input = new LineNumberReader(ir); String line; while ((line = input.readLine()) != null) if (line.indexOf("MAC Address") > 0) { smac = line.substring(line.indexOf("-") - 2); }
第二種方法是用ActiveX來獲得,速度比第一種方法快但是必須降低安全設置否則腳本不被執行
IE設置如下
1.打開IE瀏覽器
2.工具->Internet選項->安全
3.自定義級別(C)...
4.設置中對未標記為可安全執行腳本的ActiveX控件初始化並執行腳本
選中啟動(不安全)->每次不用點擊"是"按鈕,推薦,當然你的機器不能上互聯網否則會有安全問題。
選中提示->每次都得點擊"是"按鈕。
5.點擊"確定"->"確定"按鈕
6.重新啟動IE瀏覽器設置生效
代碼
<SCRIPT language=JScript event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for=foo> document.forms[0].userMacAddr.value=unescape(MACAddr); </SCRIPT> <SCRIPT language=JScript event=OnObjectReady(objObject,objAsyncContext) for=foo> if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true) { if(objObject.MACAddress != null && objObject.MACAddress != "undefined") MACAddr = objObject.MACAddress; } </SCRIPT> <META content="MSHTML 6.00.2800.1106" name=GENERATOR> ... <body> <OBJECT id=locator classid=CLSID:76A64158-CB41-11D1-8B02-00600806D9B6 VIEWASTEXT></OBJECT> <OBJECT id=foo classid=CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223></OBJECT> <SCRIPT language=JScript> var service = locator.ConnectServer(); var MACAddr ; service.Security_.ImpersonationLevel=3; service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration'); </SCRIPT> ... <td height="20" align="center">標 識:</td> <td><input value="no" name="userMacAddr" size="20" style="width:150px" readonly="yes"></td>
第三種方法是用UDP協議來發送查詢mac指令然后返回值中解析mac。個人認為這是最好的方法(暫時)速度最快
<% String smac = ""; String sip = request.getHeader("x-forwarded-for"); if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) { sip = request.getHeader("Proxy-Client-IP"); } if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) { sip = request.getHeader("WL-Proxy-Client-IP"); } if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) { sip = request.getRemoteAddr(); } UdpGetClientMacAddr umac = new UdpGetClientMacAddr(sip); smac = umac.GetRemoteMacAddr(); %> ... <input value=<%=smac %> name="userMacAddr" size="20" style="width:150px" readonly="yes">
UdpGetClientMacAddr.java
package zyj; import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; /** * 主機A向主機B發送“UDP-NetBIOS-NS”詢問包,即向主機B的137端口,發Query包來詢問主機B的NetBIOS Names信息。 * 其次,主機B接收到“UDP-NetBIOS-NS”詢問包,假設主機B正確安裝了NetBIOS服務........... 而且137端口開放,
則主機B會向主機A發送一個“UDP-NetBIOS-NS”應答包,即發Answer包給主機A。 * 並利用UDP(NetBIOS Name Service)來快速獲取遠程主機MAC地址的方法 * * @author WINDY */ public class UdpGetClientMacAddr { private String sRemoteAddr; private int iRemotePort=137; private byte[] buffer = new byte[1024]; private DatagramSocket ds=null; public UdpGetClientMacAddr(String strAddr) throws Exception{ sRemoteAddr = strAddr; ds = new DatagramSocket(); } protected final DatagramPacket send(final byte[] bytes) throws IOException { DatagramPacket dp = new DatagramPacket(bytes,bytes.length,InetAddress.getByName(sRemoteAddr),iRemotePort); ds.send(dp); return dp; } protected final DatagramPacket receive() throws Exception { DatagramPacket dp = new DatagramPacket(buffer,buffer.length); ds.receive(dp); return dp; } // 詢問包結構: // Transaction ID 兩字節(16位) 0x00 0x00 // Flags 兩字節(16位) 0x00 0x10 // Questions 兩字節(16位) 0x00 0x01 // AnswerRRs 兩字節(16位) 0x00 0x00 // AuthorityRRs 兩字節(16位) 0x00 0x00 // AdditionalRRs 兩字節(16位) 0x00 0x00 // Name:array [1..34] 0x20 0x43 0x4B 0x41(30個) 0x00 ; // Type:NBSTAT 兩字節 0x00 0x21 // Class:INET 兩字節(16位)0x00 0x01 protected byte[] GetQueryCmd() throws Exception { byte[] t_ns = new byte[50]; t_ns[0] = 0x00; t_ns[1] = 0x00; t_ns[2] = 0x00; t_ns[3] = 0x10; t_ns[4] = 0x00; t_ns[5] = 0x01; t_ns[6] = 0x00; t_ns[7] = 0x00; t_ns[8] = 0x00; t_ns[9] = 0x00; t_ns[10] = 0x00; t_ns[11] = 0x00; t_ns[12] = 0x20; t_ns[13] = 0x43; t_ns[14] = 0x4B; for(int i = 15; i < 45; i++) { t_ns[i] = 0x41; } t_ns[45] = 0x00; t_ns[46] = 0x00; t_ns[47] = 0x21; t_ns[48] = 0x00; t_ns[49] = 0x01; return t_ns; } // 表1 “UDP-NetBIOS-NS”應答包的結構及主要字段一覽表 // 序號 字段名 長度 // 1 Transaction ID 兩字節(16位) // 2 Flags 兩字節(16位) // 3 Questions 兩字節(16位) // 4 AnswerRRs 兩字節(16位) // 5 AuthorityRRs 兩字節(16位) // 6 AdditionalRRs 兩字節(16位) // 7 Name<Workstation/Redirector> 34字節(272位) // 8 Type:NBSTAT 兩字節(16位) // 9 Class:INET 兩字節(16位) // 10 Time To Live 四字節(32位) // 11 Length 兩字節(16位) // 12 Number of name 一個字節(8位) // NetBIOS Name Info 18×Number Of Name字節 // Unit ID 6字節(48位 protected final String GetMacAddr(byte[] brevdata) throws Exception { // 獲取計算機名 int i = brevdata[56] * 18 + 56; String sAddr=""; StringBuffer sb = new StringBuffer(17); // 先從第56字節位置,讀出Number Of Names(NetBIOS名字的個數,其中每個NetBIOS Names Info部分占18個字節) // 然后可計算出“Unit ID”字段的位置=56+Number Of Names×18,最后從該位置起連續讀取6個字節,就是目的主機的MAC地址。 for(int j = 1; j < 7;j++) { sAddr = Integer.toHexString(0xFF & brevdata[i+j]); if(sAddr.length() < 2) { sb.append(0); } sb.append(sAddr.toUpperCase()); if(j < 6) sb.append(':'); } return sb.toString(); } public final void close() { try { ds.close(); } catch (Exception ex){ ex.printStackTrace(); } } public final String GetRemoteMacAddr() throws Exception { byte[] bqcmd = GetQueryCmd(); send(bqcmd); DatagramPacket dp = receive(); String smac = GetMacAddr(dp.getData()); close(); return smac; } } // 獲取真實IP的方法(). jsp public String getIpAddr(HttpServletRequest request) { String ip = request.getHeader("x-forwarded-for"); if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("Proxy-Client-IP"); } if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("WL-Proxy-Client-IP"); } if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); } return ip; }
補充:
關於獲取IP地址的方式,最近在linux下有一個教訓,如果單純通過InetAddress來獲取IP地址,就會出現在不同的機器上IP地址不同的問題。
InetAddress.getLocalHost().getAddress() 實際上是根據hostname來獲取IP地址的。linux系統在剛剛裝完默認的hostname是localhost,所以通過上面代碼獲取到的本機 ip就是127.0.0.1, 相對應,比如我的hostname就是rjlin.atsig.com 返回的ip地址確是atsig.com的地址。暫時采用下面代碼來處理,當然還不夠靈活:
public static byte[] getIp() throws UnknownHostException { byte[] b = InetAddress.getLocalHost().getAddress(); Enumeration allNetInterfaces = null; try { allNetInterfaces = NetworkInterface.getNetworkInterfaces(); } catch (SocketException e) { e.printStackTrace(); } InetAddress ip = null; NetworkInterface netInterface = null; while (allNetInterfaces.hasMoreElements()) { netInterface = (NetworkInterface) allNetInterfaces.nextElement(); if (netInterface.getName().trim().equals("eth0")){ Enumeration addresses = netInterface.getInetAddresses(); while (addresses.hasMoreElements()) { ip = (InetAddress) addresses.nextElement(); } break; } } if (ip != null && ip instanceof Inet4Address) { return b = ip.getAddress(); } return b; }
mac地址是可以通過注冊表修改的,不建議以此來作為限制依據~