java獲取本地ip

很多朋友都想知道java如何獲取本地ip？下面就一起來了解一下吧~

獲取java本地ip一共有兩種方法：1、inetAddress類；2、封裝方法。

1、 inetAddress類

通過InetAddress的實例對象包含以數(shù)字形式保存的IP地址，同時還可能包含主機名（如果使用主機名來獲取InetAddress的實例，或者使用數(shù)字來構(gòu)造，并且啟用了反向主機名解析的功能）。InetAddress類提供了將主機名解析為IP地址（或反之）的方法。其生成InetAddress對象的方法。

import?java.net.Inet4Address;
import?java.net.InetAddress;
import?java.net.UnknownHostException;
public?class?Main?{
????public?static?void?main(String[]?args)?throws?UnknownHostException?{
????????//Inet4Address?address=?(Inet4Address)?Inet4Address.getLocalHost();
????????InetAddress?address?=?InetAddress.getLocalHost();
????????System.out.println(address);//獲取計算機名稱和ip地址
????????String?hostAddress?=?address.getHostAddress();
????????System.out.println(hostAddress);//獲取ip地址
????????String?hostName?=?address.getHostName();
????????System.out.println(hostName);//獲取計算機名稱
????}
}

2、封裝方法。

????public?static?String?getLocalIp()?{
????????Enumeration?netInterfaces?=?null;
????????try?{
????????????netInterfaces?=?NetworkInterface.getNetworkInterfaces();
????????????while?(netInterfaces.hasMoreElements())?{
????????????????NetworkInterface?nif?=?netInterfaces.nextElement();
????????????????Enumeration?InetAddress?=?nif.getInetAddresses();
????????????????while?(InetAddress.hasMoreElements())?{
????????????????????String?ip?=?InetAddress.nextElement().getHostAddress();
????????????????????if?(ip.startsWith("192.168"))?{
????????????????????????return?ip;
????????????????????}
????????????????}
????????????}
????????}?catch?(SocketException?e)?{
????????}
????????return?"127.0.0.1";
????}

以上就是小編今天的分享了，希望可以幫到大家。