java获取指定的主机的IP地址。
1、使用 InetAddress 类的 InetAddress.getByName() 方法来获取指定主机(网址)的IP地址
import java.net.InetAddress; import java.net.UnknownHostException; public class GetIP { public static void main(String[] args) { InetAddress address = null; try { address = InetAddress.getByName("www.baidu.com");//根据主机名www.baidu.com来获取其相关的地址信息并保存在address } catch (UnknownHostException e) { System.exit(2); } System.out.println(address.getHostName() + "=" + address.getHostAddress()); System.exit(0); } }
运行结果为:
www.baidu.com=183.232.231.173
但要注意的是baidu的主机不止一台,会经常改变。
使用 InetAddress 类的 getLocalAddress() 方法获取本机ip地址及主机名
import java.net.InetAddress; public class Main { public static void main(String[] args) throws Exception { InetAddress addr = InetAddress.getLocalHost();//获取本机的相关信息并保存在addr System.out.println("Local HostAddress: "+addr.getHostAddress()); String hostname = addr.getHostName(); System.out.println("Local host name: "+hostname); } }
运行结果为:
Local HostAddress: 192.168.88.1 Local host name: MrBread