如何通过Java代码获取本机MAC地址和IP地址的具体实现方法？
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本文共计1188个文字，预计阅读时间需要5分钟。
在Java中，获取Windows、Linux和Windows 7的MAC地址，以及解决多网卡存在的问题，可以按照以下步骤进行：
1. 使用`InetAddress`类获取MAC地址。
2.使用`Runtime.getRuntime().exec()`执行系统命令来获取网络接口信息，解决多网卡问题。
以下是一个示例代码：
java
import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.InetAddress;public class NetworkInfo { public static void main(String[] args) { try { // 获取MAC地址 InetAddress localMachine=InetAddress.getLocalHost(); byte[] mac=localMachine.getMacAddress(); StringBuilder sb=new StringBuilder(); for (byte b : mac) { sb.append(String.format(%02X-, b)); } String macAddress=sb.substring(0, sb.length() - 1); System.out.println(MAC Address: + macAddress);
// 获取Windows、Linux和Windows 7的MAC地址 String os=System.getProperty(os.name).toLowerCase(); if (os.contains(win)) { // Windows系统 String command=ipconfig /all; String[] commandList={ cmd.exe, /c, command }; Process process=Runtime.getRuntime().exec(commandList); BufferedReader reader=new BufferedReader(new InputStreamReader(process.getInputStream())); String line; while ((line=reader.readLine()) !=null) { if (line.contains(Physical Address)) { String[] parts=line.split(:); if (parts.length > 1) { String macAddressWin=parts[1].trim().replace( , ); System.out.println(Windows MAC Address: + macAddressWin); } break; } } } else { // Linux系统 String command=ifconfig; String[] commandList={ /bin/sh, -c, command }; Process process=Runtime.getRuntime().exec(commandList); BufferedReader reader=new BufferedReader(new InputStreamReader(process.getInputStream())); String line; while ((line=reader.readLine()) !=null) { if (line.contains(ether)) { String[] parts=line.split(:); if (parts.length > 1) { String macAddressLinux=parts[1].trim(); System.out.println(Linux MAC Address: + macAddressLinux); } break; } } }
} catch (IOException e) { e.printStackTrace(); } }}
Java中获取windows、Linux和windows7的MAC地址
多网卡是存在问题，比如会找到Virsualbox的网卡。
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
/**
* 与系统相关的一些常用工具方法.
*
* @author lvbogun
* @version 1.0.0
*/
public class SystemTool {
/**
* 获取当前操作系统名称. return 操作系统名称 例如:windows xp,linux 等.
*/
public static String getOSName() {
return System.getProperty("os.name").toLowerCase();
}
/**
* 获取unix网卡的mac地址. 非windows的系统默认调用本方法获取.
* 如果有特殊系统请继续扩充新的取mac地址方法.
*
* @return mac地址
*/
public static String getUnixMACAddress() {
String mac = null;
BufferedReader bufferedReader = null;
Process process = null;
try {
// linux下的命令，一般取eth0作为本地主网卡
process = Runtime.getRuntime().exec("ifconfig eth0");
// 显示信息中包含有mac地址信息
bufferedReader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = null;
int index = -1;
while ((line = bufferedReader.readLine()) != null) {
// 寻找标示字符串[hwaddr]
index = line.toLowerCase().indexOf("hwaddr");
if (index >= 0) {// 找到了
// 取出mac地址并去除2边空格
mac = line.substring(index + "hwaddr".length() + 1).trim();
break;
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (bufferedReader != null) {
bufferedReader.close();
}
} catch (IOException e1) {
e1.printStackTrace();
}
bufferedReader = null;
process = null;
}
return mac;
}
/**
* 获取widnows网卡的mac地址.
*
* @return mac地址
*/
public static String getWindowsMACAddress() {
String mac = null;
BufferedReader bufferedReader = null;
Process process = null;
try {
// windows下的命令，显示信息中包含有mac地址信息
process = Runtime.getRuntime().exec("ipconfig /all");
bufferedReader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = null;
int index = -1;
while ((line = bufferedReader.readLine()) != null) {
System.out.println(line);
// 寻找标示字符串[physical
index = line.toLowerCase().indexOf("physical address");
if (index >= 0) {// 找到了
index = line.indexOf(":");// 寻找":"的位置
if (index >= 0) {
System.out.println(mac);
// 取出mac地址并去除2边空格
mac = line.substring(index + 1).trim();
}
break;
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (bufferedReader != null) {
bufferedReader.close();
}
} catch (IOException e1) {
e1.printStackTrace();
}
bufferedReader = null;
process = null;
}
return mac;
}
/**
* windows 7 专用 获取MAC地址
*
* @return
* @throws Exception
*/
public static String getMACAddress() throws Exception {
// 获取本地IP对象
InetAddress ia = InetAddress.getLocalHost();
// 获得网络接口对象（即网卡），并得到mac地址，mac地址存在于一个byte数组中。
byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
// 下面代码是把mac地址拼装成String
StringBuffer sb = new StringBuffer();
for (int i = 0; i < mac.length; i++) {
if (i != 0) {
sb.append("-");
}
// mac[i] & 0xFF 是为了把byte转化为正整数
String s = Integer.toHexString(mac[i] & 0xFF);
sb.append(s.length() == 1 ? 0 + s : s);
}
// 把字符串所有小写字母改为大写成为正规的mac地址并返回
return sb.toString().toUpperCase();
}
/**
* 测试用的main方法.
*
* @param argc 运行参数.
* @throws Exception
*/
public static void main(String[] argc) throws Exception {
String os = getOSName();
System.out.println(os);
if (os.equals("windows 7")) {
String mac = getMACAddress();
System.out.println(mac);
} else if (os.startsWith("windows")) {
// 本地是windows
String mac = getWindowsMACAddress();
System.out.println(mac);
} else {
// 本地是非windows系统 一般就是unix
String mac = getUnixMACAddress();
System.out.println(mac);
}
}
}
[size=large][color=red]得到所有IP[/color][/size]
这段代码会输出计算机中所有设备的ip，找需要的
Enumeration<NetworkInterface> netInterfaces = null;
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = netInterfaces.nextElement();
System.out.println("DisplayName:" + ni.getDisplayName());
System.out.println("Name:" + ni.getName());
Enumeration<InetAddress> ips = ni.getInetAddresses();
while (ips.hasMoreElements()) {
System.out.println("IP:"
+ ips.nextElement().getHostAddress());
}
}
} catch (Exception e) {
e.printStackTrace();
}
[color=red]以下代码在多网卡出现问题[/color]
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
/*
* 物理地址是48位，别和ipv6搞错了
*/
public class LOCALMAC {
/**
* @param args
* @throws UnknownHostException
* @throws SocketException
*/
public static void main(String[] args) throws UnknownHostException, SocketException {
// TODO Auto-generated method stub
//得到IP，输出PC-201309011313/122.206.73.83
InetAddress ia = InetAddress.getLocalHost();
System.out.println(ia);
getLocalMac(ia);
}
private static void getLocalMac(InetAddress ia) throws SocketException {
// TODO Auto-generated method stub
//获取网卡，获取地址
byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
System.out.println("mac数组长度："+mac.length);
StringBuffer sb = new StringBuffer("");
for(int i=0; i<mac.length; i++) {
if(i!=0) {
sb.append("-");
}
//字节转换为整数
int temp = mac[i]&0xff;
String str = Integer.toHexString(temp);
System.out.println("每8位:"+str);
if(str.length()==1) {
sb.append("0"+str);
}else {
sb.append(str);
}
}
System.out.println("本机MAC地址:"+sb.toString().toUpperCase());
}
}
本文共计1188个文字，预计阅读时间需要5分钟。
在Java中，获取Windows、Linux和Windows 7的MAC地址，以及解决多网卡存在的问题，可以按照以下步骤进行：
1. 使用`InetAddress`类获取MAC地址。
2.使用`Runtime.getRuntime().exec()`执行系统命令来获取网络接口信息，解决多网卡问题。
以下是一个示例代码：
java
import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.InetAddress;public class NetworkInfo { public static void main(String[] args) { try { // 获取MAC地址 InetAddress localMachine=InetAddress.getLocalHost(); byte[] mac=localMachine.getMacAddress(); StringBuilder sb=new StringBuilder(); for (byte b : mac) { sb.append(String.format(%02X-, b)); } String macAddress=sb.substring(0, sb.length() - 1); System.out.println(MAC Address: + macAddress);
// 获取Windows、Linux和Windows 7的MAC地址 String os=System.getProperty(os.name).toLowerCase(); if (os.contains(win)) { // Windows系统 String command=ipconfig /all; String[] commandList={ cmd.exe, /c, command }; Process process=Runtime.getRuntime().exec(commandList); BufferedReader reader=new BufferedReader(new InputStreamReader(process.getInputStream())); String line; while ((line=reader.readLine()) !=null) { if (line.contains(Physical Address)) { String[] parts=line.split(:); if (parts.length > 1) { String macAddressWin=parts[1].trim().replace( , ); System.out.println(Windows MAC Address: + macAddressWin); } break; } } } else { // Linux系统 String command=ifconfig; String[] commandList={ /bin/sh, -c, command }; Process process=Runtime.getRuntime().exec(commandList); BufferedReader reader=new BufferedReader(new InputStreamReader(process.getInputStream())); String line; while ((line=reader.readLine()) !=null) { if (line.contains(ether)) { String[] parts=line.split(:); if (parts.length > 1) { String macAddressLinux=parts[1].trim(); System.out.println(Linux MAC Address: + macAddressLinux); } break; } } }
} catch (IOException e) { e.printStackTrace(); } }}
Java中获取windows、Linux和windows7的MAC地址
多网卡是存在问题，比如会找到Virsualbox的网卡。
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
/**
* 与系统相关的一些常用工具方法.
*
* @author lvbogun
* @version 1.0.0
*/
public class SystemTool {
/**
* 获取当前操作系统名称. return 操作系统名称 例如:windows xp,linux 等.
*/
public static String getOSName() {
return System.getProperty("os.name").toLowerCase();
}
/**
* 获取unix网卡的mac地址. 非windows的系统默认调用本方法获取.
* 如果有特殊系统请继续扩充新的取mac地址方法.
*
* @return mac地址
*/
public static String getUnixMACAddress() {
String mac = null;
BufferedReader bufferedReader = null;
Process process = null;
try {
// linux下的命令，一般取eth0作为本地主网卡
process = Runtime.getRuntime().exec("ifconfig eth0");
// 显示信息中包含有mac地址信息
bufferedReader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = null;
int index = -1;
while ((line = bufferedReader.readLine()) != null) {
// 寻找标示字符串[hwaddr]
index = line.toLowerCase().indexOf("hwaddr");
if (index >= 0) {// 找到了
// 取出mac地址并去除2边空格
mac = line.substring(index + "hwaddr".length() + 1).trim();
break;
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (bufferedReader != null) {
bufferedReader.close();
}
} catch (IOException e1) {
e1.printStackTrace();
}
bufferedReader = null;
process = null;
}
return mac;
}
/**
* 获取widnows网卡的mac地址.
*
* @return mac地址
*/
public static String getWindowsMACAddress() {
String mac = null;
BufferedReader bufferedReader = null;
Process process = null;
try {
// windows下的命令，显示信息中包含有mac地址信息
process = Runtime.getRuntime().exec("ipconfig /all");
bufferedReader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = null;
int index = -1;
while ((line = bufferedReader.readLine()) != null) {
System.out.println(line);
// 寻找标示字符串[physical
index = line.toLowerCase().indexOf("physical address");
if (index >= 0) {// 找到了
index = line.indexOf(":");// 寻找":"的位置
if (index >= 0) {
System.out.println(mac);
// 取出mac地址并去除2边空格
mac = line.substring(index + 1).trim();
}
break;
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (bufferedReader != null) {
bufferedReader.close();
}
} catch (IOException e1) {
e1.printStackTrace();
}
bufferedReader = null;
process = null;
}
return mac;
}
/**
* windows 7 专用 获取MAC地址
*
* @return
* @throws Exception
*/
public static String getMACAddress() throws Exception {
// 获取本地IP对象
InetAddress ia = InetAddress.getLocalHost();
// 获得网络接口对象（即网卡），并得到mac地址，mac地址存在于一个byte数组中。
byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
// 下面代码是把mac地址拼装成String
StringBuffer sb = new StringBuffer();
for (int i = 0; i < mac.length; i++) {
if (i != 0) {
sb.append("-");
}
// mac[i] & 0xFF 是为了把byte转化为正整数
String s = Integer.toHexString(mac[i] & 0xFF);
sb.append(s.length() == 1 ? 0 + s : s);
}
// 把字符串所有小写字母改为大写成为正规的mac地址并返回
return sb.toString().toUpperCase();
}
/**
* 测试用的main方法.
*
* @param argc 运行参数.
* @throws Exception
*/
public static void main(String[] argc) throws Exception {
String os = getOSName();
System.out.println(os);
if (os.equals("windows 7")) {
String mac = getMACAddress();
System.out.println(mac);
} else if (os.startsWith("windows")) {
// 本地是windows
String mac = getWindowsMACAddress();
System.out.println(mac);
} else {
// 本地是非windows系统 一般就是unix
String mac = getUnixMACAddress();
System.out.println(mac);
}
}
}
[size=large][color=red]得到所有IP[/color][/size]
这段代码会输出计算机中所有设备的ip，找需要的
Enumeration<NetworkInterface> netInterfaces = null;
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = netInterfaces.nextElement();
System.out.println("DisplayName:" + ni.getDisplayName());
System.out.println("Name:" + ni.getName());
Enumeration<InetAddress> ips = ni.getInetAddresses();
while (ips.hasMoreElements()) {
System.out.println("IP:"
+ ips.nextElement().getHostAddress());
}
}
} catch (Exception e) {
e.printStackTrace();
}
[color=red]以下代码在多网卡出现问题[/color]
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
/*
* 物理地址是48位，别和ipv6搞错了
*/
public class LOCALMAC {
/**
* @param args
* @throws UnknownHostException
* @throws SocketException
*/
public static void main(String[] args) throws UnknownHostException, SocketException {
// TODO Auto-generated method stub
//得到IP，输出PC-201309011313/122.206.73.83
InetAddress ia = InetAddress.getLocalHost();
System.out.println(ia);
getLocalMac(ia);
}
private static void getLocalMac(InetAddress ia) throws SocketException {
// TODO Auto-generated method stub
//获取网卡，获取地址
byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
System.out.println("mac数组长度："+mac.length);
StringBuffer sb = new StringBuffer("");
for(int i=0; i<mac.length; i++) {
if(i!=0) {
sb.append("-");
}
//字节转换为整数
int temp = mac[i]&0xff;
String str = Integer.toHexString(temp);
System.out.println("每8位:"+str);
if(str.length()==1) {
sb.append("0"+str);
}else {
sb.append(str);
}
}
System.out.println("本机MAC地址:"+sb.toString().toUpperCase());
}
}