java 获取IP和MAC

java 获取IP和MAC

标签（空格分隔）： java

java 获取IP和MAC

1获取IP

2获取mac

1、获取IP

public static String getIpAddress() {
try {
Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();
InetAddress ip = null;
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface)allNetInterfaces.nextElement();
if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
continue;
} else {
Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
while (addresses.hasMoreElements()) {
ip = addresses.nextElement();
if (ip != null && ip instanceof Inet4Address) {
return ip.getHostAddress();
}
}
}
}
} catch (Exception e) {
System.out.println("获取IP失败！！！！");
}
return "";
}

2获取mac

public static String getMacAddress() {
try {
Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();
byte[] mac = null;
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface)allNetInterfaces.nextElement();
if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
continue;
} else {
mac = netInterface.getHardwareAddress();
if (mac != null) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < mac.length; i++) {
sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
}
if (sb.length() > 0) {
return sb.toString();
}
}
}
}
} catch (Exception e) {
System.out.println(("MAC地址获取失败"));
}
return "";
}

以上的代码主要解决：有些机器有许多虚拟的网卡，获取IP地址时会出现一些意外，所以需要一些验证：

以上的代码中

netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()