方式一：通过java.net.InetAddress类获取
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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
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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：
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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(); } }} |