你如何获得主机的主要IP地址？

ip addr show

ifconfig

import socket

ip_address = socket.gethostbyname(socket.gethostname())
print(ip_address)

const os = require('os');
const networkInterfaces = os.networkInterfaces();

for (const key in networkInterfaces) {
  const iface = networkInterfaces[key];
  for (const address of iface) {
    if (address.family === 'IPv4' && !address.internal) {
      console.log(address.address);
    }
  }
}

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

public class Main {
  public static void main(String[] args) {
    try {
      InetAddress ip = InetAddress.getLocalHost();
      System.out.println(ip.getHostAddress());
    } catch (UnknownHostException e) {
      e.printStackTrace();
    }
  }
}