java如何查询本机ip地址和mac地址

如题所述

推荐答案 æ¨èäº2016-11-18

import java.net.*;
public class NetInfo {
public static void main(String[] args) {
    new NetInfo().say();
    }
public void say() {
   try {
   InetAddress i = InetAddress.getLocalHost();
   System.out.println(i);                  //è®¡ç®æºåç§°åIP
   System.out.println(i.getHostName());    //åç§°
   System.out.println(i.getHostAddress()); //åªè·å¾IP
   }
   catch(Exception e){e.printStackTrace();}
}
}

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其他回答

第1个回答 2015-06-22

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

public class getIpAndMac {

public static void main(String[] args) throws UnknownHostException,
SocketException {
InetAddress addr = InetAddress.getLocalHost();
String ip = addr.getHostAddress().toString();// 获得本机IP
System.out.println("本机ip：" + ip);
getLocalMac(addr);
}

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();
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);
if (str.length() == 1) {
sb.append("0" + str);
} else {
sb.append(str);
}
}
System.out.println("本机MAC地址:" + sb.toString().toUpperCase());
}
}

第2个回答 2015-07-05

import java.io.IOException;
import java.io.InputStreamReader;


public class GetMacAddress {


     public static String getOSName() {
         return System.getProperty("os.name").toLowerCase();
     }


     public static String getUnixMACAddress() {
         String mac = null;
         BufferedReader bufferedReader = null;
         Process process = null;
         try {

             process = Runtime.getRuntime().exec("ifconfig eth0");
             bufferedReader = new BufferedReader(new InputStreamReader(process
                     .getInputStream()));
             String line = null;
             int index = -1;
             while ((line = bufferedReader.readLine()) != null) {

                 index = line.toLowerCase().indexOf("hwaddr");

                 if (index != -1) {

                     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;
     }




         public static String getLinuxMACAddress() {
             String mac = null;
             BufferedReader bufferedReader = null;
             Process process = null;
             try {

                 process = Runtime.getRuntime().exec("ifconfig eth0");
                 bufferedReader = new BufferedReader(new InputStreamReader(process
                         .getInputStream()));
                 String line = null;
                 int index = -1;
                 while ((line = bufferedReader.readLine()) != null) {
                     index = line.toLowerCase().indexOf("硬件地址");

                     if (index != -1) {

                         mac = line.substring(index+4).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;
         }


         public static String getWindowsMACAddress() {
             String mac = null;
             BufferedReader bufferedReader = null;
             Process process = null;
             try {

                 process = Runtime.getRuntime().exec("ipconfig /all");
                 bufferedReader = new BufferedReader(new InputStreamReader(process
                         .getInputStream()));
                 String line = null;
                 int index = -1;
                 while ((line = bufferedReader.readLine()) != null) {

                     index = line.toLowerCase().indexOf("physical address");
                     if (index != -1) {
                         index = line.indexOf(":");
                         if (index != -1) {

                            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;
         }


         public static void main(String[] argc) {
             String os = getOSName();
             System.out.println(os);
             if(os.startsWith("windows")){
                 String mac = getWindowsMACAddress();
                 System.out.println("本地是windows:"+mac);
             }else if(os.startsWith("linux")){
                   String mac = getLinuxMACAddress();
                 System.out.println("本地是Linux系统,MAC地址是:"+mac);
             }else{
                 String mac = getUnixMACAddress();
                 System.out.println("本地是Unix系统 MAC地址是:"+mac);
             }
         }

}

第3个回答 2012-05-06

IP地址：java.net.InetAddress类的 getLocalHost() 方法
MAC地址：没有直接的方法，百度搜“java 获得本机mac地址”有很多。
我的理解：因为java的网络程序是面向TCP/IP层的，MAC地址属于链路层了，在IP层的下面，java看不到。所以要调用c和c++做的程序，比如Windows系统自带的ipconfig

第4个回答 2015-07-22

import java.net.*;
public class NetInfo {
public static void main(String[] args) {
new NetInfo().say();
}
public void say() {
try {
InetAddress i = InetAddress.getLocalHost();
System.out.println(i); //计算机名称和IP
System.out.println(i.getHostName()); //名称
System.out.println(i.getHostAddress()); //只获得IP
}
catch(Exception e){e.printStackTrace();}
}
}

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