如何使用Java获取远程主机的IP地址

Question

I need to get the IP address for remote hosts. I tried the following and works fine:

socket = factory.createSocket(hostName, port);  
InetAddress remoteIP = socket.getInetAddress();
String[] remoteIPOnly = remoteIP.toString().split("\\/");
System.out.println("Remote IP is: "+remoteIPOnly[1]);

But, I need a way where I don't have to specify a port number. Ie, I need the IP for a remote host despite the port number. Is this possible ? Is it possible to get the IP without creating socket from the first place ?

Answer 1

Try this:

InetAddress inetAddress = InetAddress.getByName("www.google.com");
byte[] raw = inetAddress.getAddress();

The byte array now contains the IP addresses bytes.

Answer 2

Use getHostAddress() as below:

    InetAddress inetAddress = InetAddress.getByName("www.google.com");
    String ipAddress = inetAddress.getHostAddress();
    System.out.println(ipAddress );//prints 66.152.109.61