JAVA程序通过IP地址获取MAC地址

缺乏、安全感 2023-06-24 14:23 101阅读 0赞

转载自：[https://blog.csdn.net/chwshuang/article/details/46958719][https_blog.csdn.net_chwshuang_article_details_46958719]

## 叙述 ##

我们都知道通过在电脑上敲 cmd 后，输入ipconfig -all 来获取IP地址或者MAC地址，java程序可以在window和linux下获取MAC地址等信息！

## 代码 ##

import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.LineNumberReader;
     
    /**
     * 
     * @author  http://zhidao.baidu.com/question/292753600.html
     */
    public class TestMac {
        public static void main(String[] args) {
            long start = System.currentTimeMillis();
            System.out.println("Operation System=" + getOsName());
            System.out.println("Mac Address=" + getMACAddress());
            System.out.println("通过ip获取mac地址为:" + getMACAddress("192.168.2.14"));
            long end = System.currentTimeMillis();
            System.out.println("获取电脑MAC地址时间为:" + (end - start));
        }
        /**
         * 获取操作系统名称
         */
        public static String getOsName() {
            String os = "";
            os = System.getProperty("os.name");
            return os;
        }
        /**
         * 获取MAC地址
         */
        public static String getMACAddress() {
            String address = "";
            String os = getOsName();
            //根据操作系统类型获取MAC地址
            if (os.startsWith("Windows")) {
                try {
                    String command = "cmd.exe /c ipconfig /all";
                    Process p = Runtime.getRuntime().exec(command);
                    BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String line;
                    while ((line = br.readLine()) != null) {
                        if (line.indexOf("Physical Address") > 0) {
                            int index = line.indexOf(":");
                            index += 2;
                            address = line.substring(index);
                            break;
                        }
                    }
                    br.close();
                    return address.trim();
                } catch (IOException e) {
                }
            } else if (os.startsWith("Linux")) {
                String command = "/bin/sh -c ifconfig -a";
                Process p;
                try {
                    p = Runtime.getRuntime().exec(command);
                    BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String line;
                    while ((line = br.readLine()) != null) {
                        if (line.indexOf("HWaddr") > 0) {
                            int index = line.indexOf("HWaddr") + "HWaddr".length();
                            address = line.substring(index);
                            break;
                        }
                    }
                    br.close();
                } catch (IOException e) {
                }
            }
            address = address.trim();
            return address;
        }
        /**
         * 根据IP地址获取MAC地址
         */
        public static String getMACAddress(String ipAddress) {
            String str = "", strMAC = "", macAddress = "";
            try {
                Process pp = Runtime.getRuntime().exec("nbtstat -a " + ipAddress);
                InputStreamReader ir = new InputStreamReader(pp.getInputStream());
                LineNumberReader input = new LineNumberReader(ir);
                for (int i = 1; i < 100; i++) {
                    str = input.readLine();
                    if (str != null) {
                        if (str.indexOf("MAC Address") > 1) {
                            strMAC = str.substring(str.indexOf("MAC Address") + 14, str.length());
                            break;
                        }
                    }
                }
            } catch (IOException ex) {
                return "Can't Get MAC Address!";
            }
            if (strMAC.length() < 17) {
                return "Error!";
            }
            macAddress = strMAC.substring(0, 2) + ":" + strMAC.substring(3, 5) + ":" + strMAC.substring(6, 8) + ":" + strMAC.substring(9, 11) + ":"
                    + strMAC.substring(12, 14) + ":" + strMAC.substring(15, 17);
            return macAddress;
        }
    }

**注意：**

这段代码需要公网访问的服务器上部署后有效，自己的机器上属于局域网，一般获取的都是本地IP，效果不同

[https_blog.csdn.net_chwshuang_article_details_46958719]: https://blog.csdn.net/chwshuang/article/details/46958719