java 获得客户端mac

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mob64ca12d94299 2023-08-06 09:17:02 ©著作权

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如何在Java中获得客户端的MAC地址

流程图

graph LR
A[获取InetAddress对象] --> B[获取NetworkInterface对象]
B --> C[获取MAC地址]

步骤和代码

获取InetAddress对象：首先，我们需要获取客户端的IP地址信息，然后通过IP地址获取InetAddress对象。

InetAddress inetAddress = InetAddress.getLocalHost();

获取NetworkInterface对象：接下来，我们需要根据InetAddress对象获取NetworkInterface对象，以便获取MAC地址。

NetworkInterface networkInterface = NetworkInterface.getByInetAddress(inetAddress);

获取MAC地址：最后，我们可以通过NetworkInterface对象获取MAC地址。

byte[] macAddressBytes = networkInterface.getHardwareAddress();

完整示例代码

import java.net.InetAddress;
import java.net.NetworkInterface;

public class GetMacAddressExample {
    public static void main(String[] args) {
        try {
            // 获取InetAddress对象
            InetAddress inetAddress = InetAddress.getLocalHost();

            // 获取NetworkInterface对象
            NetworkInterface networkInterface = NetworkInterface.getByInetAddress(inetAddress);

            // 获取MAC地址
            byte[] macAddressBytes = networkInterface.getHardwareAddress();

            // 将MAC地址转换为字符串形式
            StringBuilder macAddressBuilder = new StringBuilder();
            for (byte b : macAddressBytes) {
                macAddressBuilder.append(String.format("%02X:", b));
            }

            if (macAddressBuilder.length() > 0) {
                macAddressBuilder.deleteCharAt(macAddressBuilder.length() - 1);
            }

            String macAddress = macAddressBuilder.toString();

            System.out.println("MAC地址: " + macAddress);
        } catch (Exception e) {
            System.out.println("获取MAC地址失败: " + e.getMessage());
        }
    }
}