如何获取以太网IP地址 [英] How to get ethernet IP address

问题描述

我已经很难获得确切的以太网ip地址.

I''ve tired to get exact ethernet ip address.

InetAddress ip=InetAddress.getLocalHost();
String iaddr = ip.getHostAddress();

它仅返回本地主机地址.我只需要以太网地址..

请帮帮我..

It return localhost address only. I need ethernet address only..

pls help me..

推荐答案

您很亲密-仅需更多代码即可使其可见:
试试这个:

You are pretty close - just a bit more coding to make it visible:
Try this:

public static void main(String[] args) {
		
		try {
		    InetAddress addr = InetAddress.getLocalHost();

		    // Get IP Address
		    byte[] ipAddr = addr.getAddress();

		    // Get hostname
		    String hostname = addr.getHostName();
		    System.out.println("hostname " + hostname);
		    System.out.println("IP Address " + convertIP(ipAddr));
		} catch (java.net.UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	// Convert to dot representation
	private static String convertIP(byte[] ipAddr){
	    String ipAddrStr = "";
	    for (int i=0; i<ipAddr.length; i++) {
	        if (i > 0) {
	            ipAddrStr += ".";
	        }
	        ipAddrStr += ipAddr[i]&0xFF;
	    }
	    return ipAddrStr;
	}

报价:

以下代码在Linux(ubuntu)上运行.您必须在Windows上使用，只需将"ppp0"更改为"ppp2".肯定会返回互联网IP地址.

The following code working on Linux(ubuntu).. If u have to use on windows, just change the "ppp0" to "ppp2". surely it will return the internet IP Address.

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import javax.swing.JOptionPane;

public class ShowIp {

    public static void main(String[] args) throws SocketException {
        NetworkInterface ni = NetworkInterface.getByName("ppp0");
        Enumeration<InetAddress> inetAddresses = ni.getInetAddresses();


        while (inetAddresses.hasMoreElements()) {
            InetAddress ia = inetAddresses.nextElement();
            if (!ia.isLinkLocalAddress()) {
                JOptionPane.showMessageDialog(null, ia.getHostAddress());
            }
        }
    }
}

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