java 获得网卡MAC地址
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前阵子看到一篇文件,JAVA得到网卡物理地址(windows和Linux),当时觉得挺好,后来正好项目里有需要,就用了它,但好像有点问题.因为它是采用固定字符串搜索(if (line.indexOf("Physical Address") != -1) )获得MAC 地址的,后来在应用时出了问题,因为没有"Physical Address"这一项.后来在外网在查查了一下,后来发现老外有写一个这样的类,可能那样的方式更加可靠一点.算是做个标记.
package sterning.queue;
import java.net.InetAddress;
import java.io.InputStream;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.text.ParseException;
import java.util.StringTokenizer;
public final class NetworkUtils {
private final static int MACADDR_LENGTH = 17;
private final static String WIN_OSNAME = "Windows";
private final static String WIN_MACADDR_REG_EXP =
"^[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}$";
private final static String WIN_MACADDR_EXEC = "ipconfig /all";
public final static String getMacAddress() throws IOException {
String os = System.getProperty("os.name");
try {
if (os.startsWith(WIN_OSNAME)) {
return winMacAddress(winIpConfigCommand());
}
// 下面是其它的操作系统的代码,省略了!
// LINUX --> else if (os.startsWith("Linux")) {
//
// Process p = Runtime.getRuntime().exec("ifconfig");
// MAC OSX --> else if(os.startsWith("Mac OS X")) {
//
// Process p = Runtime.getRuntime().exec("ifconfig");
else {
throw new IOException("OS not supported : " + os);
}
}
catch(ParseException e) {
e.printStackTrace();
throw new IOException(e.getMessage());
}
}
private final static String winMacAddress(String ipConfigOutput)
throws ParseException {
String localHost = null;
try {
localHost = InetAddress.getLocalHost().getHostAddress();
}
catch(java.net.UnknownHostException ex) {
ex.printStackTrace();
throw new ParseException(ex.getMessage(), 0);
}
StringTokenizer tokenizer = new StringTokenizer(ipConfigOutput, "\n");
String lastMacAddress = null;
while(tokenizer.hasMoreTokens()) {
String line = tokenizer.nextToken().trim();
// see if line contains IP address
if (line.endsWith(localHost) && lastMacAddress != null) {
return lastMacAddress;
}
// see if line contains MAC address
int macAddressPosition = line.indexOf(":");
if(macAddressPosition <= 0) continue;
String macAddressCandidate = line.substring(macAddressPosition + 1).trim();
if (winIsMacAddress(macAddressCandidate)) {
lastMacAddress = macAddressCandidate;
continue;
}
}
ParseException ex = new ParseException
("cannot read MAC address from [" + ipConfigOutput + "]", 0);
ex.printStackTrace();
throw ex;
}
private final static boolean winIsMacAddress(String macAddressCandidate) {
if (macAddressCandidate.length() != MACADDR_LENGTH) return false;
if (!macAddressCandidate.matches(WIN_MACADDR_REG_EXP)) return false;
return true;
}
private final static String winIpConfigCommand() throws IOException {
Process p = Runtime.getRuntime().exec(WIN_MACADDR_EXEC);
InputStream stdoutStream = new BufferedInputStream(p.getInputStream());
StringBuffer buffer= new StringBuffer();
for (;;) {
int c = stdoutStream.read();
if (c == -1) break;
buffer.append((char)c);
}
String outputText = buffer.toString();
stdoutStream.close();
return outputText;
}
public final static void main(String[] args) {
try {
System.out.println("MAC ADDRESS");
System.out.println(" OS : "
+ System.getProperty("os.name"));
System.out.println(" IP/Localhost: "
+ InetAddress.getLocalHost().getHostAddress());
System.out.println(" MAC Address : "
+ getMacAddress());
}
catch(Throwable t) {
t.printStackTrace();
}
}
}
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