编程36计

try {
	InetAddress LocalIP = InetAddress.getLocalHost();
	InetAddress[] addrs = InetAddress.getAllByName(InetAddress.getLocalHost().getHostName()); 
	for(InetAddress addr:addrs)
	{
		System.out.println(addr.getHostAddress());
	}
	
} catch (UnknownHostException e1) {
	e1.printStackTrace();
}