java获取linux系统ip

import java.net.InetAddress;
import java.net.UnknownHostException;

public class GetLocalIP {
    public static void main(String[] args) {
        try {
            InetAddress inetAddress = InetAddress.getLocalHost();
            System.out.println("Local IP Address: " + inetAddress.getHostAddress());
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class GetLocalIPByCommand {
    public static void main(String[] args) {
        try {
            Process process = Runtime.getRuntime().exec("ip addr show eth0");
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                if (line.contains("inet ")) {
                    System.out.println(line.split("/")[0].trim());
                    break;
                }
            }
            reader.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}