java如何获取本机IP
import java.net.*;
public class Test6 {
public static void main(String[] args) {
// TODO Auto-generated method stub
InetAddress ia=null;
try {
ia=ia.getLocalHost();
String localname=ia.getHostName();
String localip=ia.getHostAddress();
System.out.println("本机名称是："+ localname);
System.out.println("本机的ip是 ："+localip);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
获取所有IPv4的IP地址：
public static List<String> getLocalIPList() {
List<String> ipList = new ArrayList<String>();
try {
Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
NetworkInterface networkInterface;
Enumeration<InetAddress> inetAddresses;
InetAddress inetAddress;
String ip;
while (networkInterfaces.hasMoreElements()) {
networkInterface = networkInterfaces.nextElement();
inetAddresses = networkInterface.getInetAddresses();
while (inetAddresses.hasMoreElements()) {
inetAddress = inetAddresses.nextElement();
if (inetAddress != null && inetAddress instanceof Inet4Address) { // IPV4
ip = inetAddress.getHostAddress();
ipList.add(ip);
}
}
}
} catch (SocketException e) {
e.printStackTrace();
}
return ipList;
}