class="htmledit_views">

    在JAVA中有时候会需要定位到某台电脑，而通过IP定位显然是不行的，有一种解决方案是通过定位到电脑的物理地址来定位电脑，这是本文要介绍的内容。
    1. PhysicalAddressUtil

class="has">class="language-java">package com.jetsum.web.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.logging.Level;
import java.util.logging.Logger;
import test.Test;

public class PhysicalAddress {
	public static String getMACAddress() {
		String address = "";
		String os = System.getProperty("os.name");
		if (os != class="tags" href="/tags/NULL.html" title=null>null) {
			if (os.startsWith("Windows")) {
				try {
					ProcessBuilder pb = new ProcessBuilder("ipconfig", "/all");
					Process p = pb.start();
					BufferedReader br = new BufferedReader(
							new InputStreamReader(p.getInputStream()));
					String line;
					while ((line = br.readLine()) != class="tags" href="/tags/NULL.html" title=null>null) {
						if (line.indexOf("Physical Address") != -1) {
							int index = line.indexOf(":");
							address = line.subclass="tags" href="/tags/STRING.html" title=string>string(index + 1);
							break;
						}
					}
					br.close();
					return address.trim();
				} catch (IOException e) {
				}
			} else if (os.startsWith("Linux")) {
				try {
					ProcessBuilder pb = new ProcessBuilder("ifconfig");
					Process p = pb.start();
					BufferedReader br = new BufferedReader(
							new InputStreamReader(p.getInputStream()));
					String line;
					while ((line = br.readLine()) != class="tags" href="/tags/NULL.html" title=null>null) {
						int index = line.indexOf("硬件地址");
						if (index != -1) {
							address = line.subclass="tags" href="/tags/STRING.html" title=string>string(index + 4);
							break;
						}
					}
					br.close();
					return address.trim();
				} catch (IOException ex) {
					Logger.getLogger(Test.class.getName()).log(Level.SEVERE,
							class="tags" href="/tags/NULL.html" title=null>null, ex);
				}
			}
		}
		return address;
	}
}

        2.使用

class="has">class="language-java">String address = PhysicalAddressUtil.getMACAddress() ;