本方法次要用来限制系统在其他的机器上运行.其实原理简单的很.没有调用第三方插件.代码如下:
package com.users.util;
import java.io.*;
import java.util.*;
import java.util.regex.*;
public class NetID {
String IPCONFIG_COMMAND_WIN = "ipconfig /all";
boolean realMac = true;
String unique = "";
public static String getMacAddress() {
NetID hwid = new NetID();
return hwid.getUnique().trim();
}
private String getUnique() {
String os = System.getProperty("os.name");
if (os.
viishowstartsWith("Windows")) {
return getUniqueWindows();
}else {
return "";
}
}
private String getUniqueWindows() {
String ipConfigResponse = null;
try {
ipConfigResponse = runConsoleCommand(IPCONFIG_COMMAND_WIN);
}
catch (IOException e) {
e.printStackTrace();
}
StringTokenizer tokenizer = new StringTokenizer(ipConfigResponse, "\n");
while (tokenizer.hasMoreTokens()) {
String line = tokenizer.nextToken().trim();
int macAddressPosition = line.indexOf(":");
if (macAddressPosition = 0) {
continue;
}
String macAddressCandidate = line.substring(macAddressPosition + 1).
trim();
if (isMacAddWin(macAddressCandidate)) {
if (realMac == true) {
generateUnique(macAddressCandidate);
}
else {
realMac = true;
}
}
}
return unique;
} private String runConsoleCommand(String command) throws IOException {
Process p = Runtime.getRuntime().exec(command);
InputStream stdoutStream = new BufferedInputStream(p.getInputStream());
StringBuffer buffer = new StringBuffer();
while (true) {
int c = stdoutStream.read();
if (c == -1) {
break;
}
buffer.append( (char) c);
}
String outputText = buffer.toString();
stdoutStream.close();
return outputText;
}
private boolean isMacAddWin(String macAddressCandidate) {
Pattern macPattern = Patternpile("[0-9a-fA-F]{2}-[0-9a-fA-F]{2}-[0-9a-fA-F]{2}-[0-9a-fA-F]{2}-[0-9a-fA-F]{2}-[0-9a-fA-F]{2}");
Matcher m = macPattern.matcher(macAddressCandidate);
return m.matches();
}
private boolean isMacAddOSX(String macAddressCandidate) {
if (macAddressCandidate.length() != 17) {
return false;
}
else {
return true;
}
}
private void generateUnique(String macAddress) {
if (unique == "") {
unique += macAddress;
}
else {
unique += "#";
unique += macAddress;
}
}
public static void main(String [] args) {
System.out.println(NetID.getMacAddress());
}
}
