代码如下：
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;
/**
* 此类用于取出本机的IP地址
*
* @author 何杨
* @date 2009-11-5
* @time 上午10:41:13
*/
public class IPAddrFetcher{
public String getIPInfo(){
StringBuilder sb=new StringBuilder();
try{
Enumeration<NetworkInterface> interfaces=NetworkInterface.getNetworkInterfaces();
while(interfaces.hasMoreElements()){
NetworkInterface ni=interfaces.nextElement();
sb.append("Interface "+ni.getName()+":\r\n");
Enumeration<InetAddress> inetAddresses=ni.getInetAddresses();
while(inetAddresses.hasMoreElements()){
InetAddress address=inetAddresses.nextElement();
sb.append("Address");
if(address instanceof Inet4Address){
sb.append("(v4)");
}
else{
sb.append("(v6)");
}
sb.append(":address="+address.getHostAddress()+" name="+address.getHostName()+"\r\n");
}
}
}catch(Exception ex){
ex.printStackTrace();
}
return sb.toString();
}
public static void main(String[] args){
IPAddrFetcher iPAddrFetcher=new IPAddrFetcher();
System.out.println(iPAddrFetcher.getIPInfo());
}
}