JAVA 获取系统的网络接口并枚举出所有接口上的所有IP地址

JAVA 获取系统的网络接口并枚举出所有接口上的所有IP地址

通过 java.net.NetworkInterface.getNetworkInterfaces() 获取网络接口信息，存入 ArrayList 对象，逐一枚举并打印

package test;

import java.net.SocketException;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Iterator;

public class Interface
{

  public static void main(String[] args)
  {
    try
    {
      // 枚举所有接口
      Enumeration<NetworkInterface> enuNetworkInterface = NetworkInterface.getNetworkInterfaces();
      // 所有接口信息存入 ArrayList 对象
      ArrayList<NetworkInterface> arryNetworkInterface = Collections.list(enuNetworkInterface);

      // 遍历存入接口的 ArryList 对象
      Iterator<NetworkInterface> iteratorInterface = arryNetworkInterface.iterator();
      while (iteratorInterface.hasNext() == true)
      {
        // 得到一个借口给
        NetworkInterface networkInterface = iteratorInterface.next();
        // 获取每个接口中的所有ip网络接口集合，因为可能有子接口
        ArrayList<InetAddress> arryInetAddress = Collections.list(networkInterface.getInetAddresses());

        // 获取接口名
        final String strInterface = networkInterface.getName();

        // 遍历某个接口下的所有 IP 地址
        Iterator<InetAddress> iteratorAddress = arryInetAddress.iterator();
        while (iteratorAddress.hasNext() == true)
        {
          InetAddress inet = iteratorAddress.next();
          // 筛选地址类型
          if (inet instanceof Inet4Address)
          {
            // 列出 ipv4 地址
            String strIP = inet.getHostAddress();
            System.out.printf("%-10s %-5s %-6s %-15s\n", "InetfaceName:", strInterface, " IPv4:", strIP);
          }
          else
          {
            // 列出 ipv6 地址
            String strIP = inet.getHostAddress();
            System.out.printf("%-10s %-5s %-6s %-15s\n", "InetfaceName:", strInterface, " IPv6:", strIP);
          }
        }
      }
    }
    catch (SocketException s)
    {
      s.printStackTrace();
    }
  }
}

输出结果如下：