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基于Java实现获取本地IP地址和主机名

【字号: 日期:2022-09-01 17:00:39浏览:3作者:猪猪

方式一:通过java.net.InetAddress类获取

public void test1() { try { InetAddress addr = InetAddress.getLocalHost(); System.out.println('IP地址:' + addr.getHostAddress() + ',主机名:' + addr.getHostName()); } catch (UnknownHostException e) { e.printStackTrace(); }}

输出:

IP地址:192.168.153.1,主机名:DESKTOP-338UP3E

这种方式获取到的主机名没啥问题,这种方式获取的主机名没啥问题,但获取到的IP地址却有待考量,如果一台机器有多个网卡,

他获取的IP是谁的呢?事实上,上面输出的IP是我虚拟机IP地址,既不是我有线网卡的地址,也不是我无线网卡的地址。

方式二:利用java.net.NetworkInterface获取

public void test2() { try { Enumeration<NetworkInterface> faces = NetworkInterface.getNetworkInterfaces(); while (faces.hasMoreElements()) { // 遍历网络接口 NetworkInterface face = faces.nextElement(); if (face.isLoopback() || face.isVirtual() || !face.isUp()) { continue; } System.out.print('网络接口名:' + face.getDisplayName() + ',地址:'); Enumeration<InetAddress> address = face.getInetAddresses(); while (address.hasMoreElements()) { // 遍历网络地址 InetAddress addr = address.nextElement(); if (!addr.isLoopbackAddress() && addr.isSiteLocalAddress() && !addr.isAnyLocalAddress()) { System.out.print(addr.getHostAddress() + ' '); } } System.out.println(''); } } catch (SocketException e) { e.printStackTrace(); }}

输出:

网络接口名:VMware Virtual Ethernet Adapter for VMnet8,地址:192.168.153.1 网络接口名:TAP-Windows Adapter V9,地址:10.8.0.30 网络接口名:VMware Virtual Ethernet Adapter for VMnet1,地址:192.168.46.1 网络接口名:Intel(R) Dual Band Wireless-AC 8265,地址:172.16.78.27

疑问?:第一、三行为VM虚拟机网络地址,不知为何还在。

工具类:

import java.net.InetAddress;import java.net.NetworkInterface;import java.net.SocketException;import java.net.UnknownHostException;import java.util.ArrayList;import java.util.Enumeration;import java.util.List;/** * 本地主机工具类 * * @author zhi * @since 2019年11月13日09:04:36 * */public class LocalHostUtil { /** * 获取主机名称 * * @return * @throws UnknownHostException */ public static String getHostName() throws UnknownHostException { return InetAddress.getLocalHost().getHostName(); } /** * 获取系统首选IP * * @return * @throws UnknownHostException */ public static String getLocalIP() throws UnknownHostException { return InetAddress.getLocalHost().getHostAddress(); } /** * 获取所有网卡IP,排除回文地址、虚拟地址 * * @return * @throws SocketException */ public static String[] getLocalIPs() throws SocketException { List<String> list = new ArrayList<>(); Enumeration<NetworkInterface> enumeration = NetworkInterface.getNetworkInterfaces(); while (enumeration.hasMoreElements()) { NetworkInterface intf = enumeration.nextElement(); if (intf.isLoopback() || intf.isVirtual()) { // continue; } Enumeration<InetAddress> inets = intf.getInetAddresses(); while (inets.hasMoreElements()) { InetAddress addr = inets.nextElement(); if (addr.isLoopbackAddress() || !addr.isSiteLocalAddress() || addr.isAnyLocalAddress()) { continue; } list.add(addr.getHostAddress()); } } return list.toArray(new String[0]); } /** * 判断操作系统是否是Windows * * @return */ public static boolean isWindowsOS() { boolean isWindowsOS = false; String osName = System.getProperty('os.name'); if (osName.toLowerCase().indexOf('windows') > -1) { isWindowsOS = true; } return isWindowsOS; } public static void main(String[] args) { try { System.out.println('主机是否为Windows系统:' + LocalHostUtil.isWindowsOS()); System.out.println('主机名称:' + LocalHostUtil.getHostName()); System.out.println('系统首选IP:' + LocalHostUtil.getLocalIP()); System.out.println('系统所有IP:' + String.join(',', LocalHostUtil.getLocalIPs())); } catch (UnknownHostException e) { } catch (Exception e) { e.printStackTrace(); } }}

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持好吧啦网。

标签: Java
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