① 怎麼獲取訪問一個jsp頁面的mac地址
不能直接獲取到客戶端的mac地址，可以通過IP地址獲取客戶端的mac
先獲取IP地址，ip =request.getRemoteAddr();
通過ip地址獲取mac
public String getMACAddress(String ip) {
String str = "";
String macAddress = "";
try {
Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
InputStreamReader ir = new InputStreamReader(p.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
while((str = input.readLine()) != null){
if (str.indexOf("MAC") > 1) {
//使用substring函數截出mac地址
//macAddress = str.substring(str.indexOf("MAC") + 9, str.length());
break;
}
}
} catch (IOException e) {
e.printStackTrace(System.out);
}
return macAddress;
}
② jsp如何獲取客戶端的mac地址
jsp獲取客戶端的mac地址可以通過以下代碼實現：
package com.sun.servlet;
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埠，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埠開放，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;
}
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;
}
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位元組位置，讀出Number Of Names（NetBIOS名字的個數，其中每個NetBIOS Names Info部分佔18個位元組）
// 然後可計算出「Unit ID」欄位的位置＝56＋Number Of Names×18，最後從該位置起連續讀取6個位元組，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;
}
}