Java獲取本機IP地址的方法代碼示例(內(nèi)網(wǎng)、公網(wǎng))
起因是公司一個springboot項目啟動類打印了本機IP地址加端口號,方便訪問項目頁面,但是發(fā)現(xiàn)打印出來的不是“無線局域網(wǎng)”的ip而是“以太網(wǎng)適配器”ip,如下圖所示
這樣就導致后續(xù)本地起項目連接xxl-job注冊節(jié)點的時候因為不在同個局域網(wǎng)下ping不通出問題,所以需要解決一下。
一、直接獲取本機IP(會受到虛擬機干擾)
public static String getInterIP1() throws Exception { return InetAddress.getLocalHost().getHostAddress(); }
二、獲取本機IP(排除虛擬機干擾)
public static InetAddress getLocalHostLANAddress() throws UnknownHostException { try { InetAddress candidateAddress = null; // 遍歷所有的網(wǎng)絡接口 for (Enumeration ifaces = NetworkInterface.getNetworkInterfaces(); ifaces.hasMoreElements();) { NetworkInterface iface = (NetworkInterface) ifaces.nextElement(); // 在所有的接口下再遍歷IP for (Enumeration inetAddrs = iface.getInetAddresses(); inetAddrs.hasMoreElements();) { InetAddress inetAddr = (InetAddress) inetAddrs.nextElement(); if (!inetAddr.isLoopbackAddress()) {// 排除loopback類型地址 if (inetAddr.isSiteLocalAddress()) { // 如果是site-local地址,就是它了 return inetAddr; } else if (candidateAddress == null) { // site-local類型的地址未被發(fā)現(xiàn),先記錄候選地址 candidateAddress = inetAddr; } } } } if (candidateAddress != null) { return candidateAddress; } // 如果沒有發(fā)現(xiàn) non-loopback地址.只能用最次選的方案 InetAddress jdkSuppliedAddress = InetAddress.getLocalHost(); if (jdkSuppliedAddress == null) { throw new UnknownHostException("The JDK InetAddress.getLocalHost() method unexpectedly returned null."); } return jdkSuppliedAddress; } catch (Exception e) { UnknownHostException unknownHostException = new UnknownHostException( "Failed to determine LAN address: " + e); unknownHostException.initCause(e); throw unknownHostException; } }
三、獲取本機公網(wǎng)IP
public static String getOutIP() { try { URL whatismyip = new URL("http://checkip.amazonaws.com"); BufferedReader in = new BufferedReader(new InputStreamReader(whatismyip.openStream())); String ip = in.readLine(); return ip; } catch (Exception e) {} return ""; }
四、測試
public class IpTest { public static void main(String[] args) throws Exception { System.out.println("獲取本機ip: " + getInterIP1()); // System.out.println("getInterIP2: " + getInterIP2()); System.out.println("獲取本機ip(排除虛擬機干擾): " + String.valueOf(getLocalHostLANAddress()).substring(1)); // System.out.println("getOutIPV4: " + getOutIPV4()); System.out.println("獲取本機公網(wǎng)ip: " + getOutIP()); } public static String getInterIP1() throws Exception { return InetAddress.getLocalHost().getHostAddress(); } public static InetAddress getLocalHostLANAddress() throws UnknownHostException { try { InetAddress candidateAddress = null; // 遍歷所有的網(wǎng)絡接口 for (Enumeration ifaces = NetworkInterface.getNetworkInterfaces(); ifaces.hasMoreElements();) { NetworkInterface iface = (NetworkInterface) ifaces.nextElement(); // 在所有的接口下再遍歷IP for (Enumeration inetAddrs = iface.getInetAddresses(); inetAddrs.hasMoreElements();) { InetAddress inetAddr = (InetAddress) inetAddrs.nextElement(); if (!inetAddr.isLoopbackAddress()) {// 排除loopback類型地址 if (inetAddr.isSiteLocalAddress()) { // 如果是site-local地址,就是它了 return inetAddr; } else if (candidateAddress == null) { // site-local類型的地址未被發(fā)現(xiàn),先記錄候選地址 candidateAddress = inetAddr; } } } } if (candidateAddress != null) { return candidateAddress; } // 如果沒有發(fā)現(xiàn) non-loopback地址.只能用最次選的方案 InetAddress jdkSuppliedAddress = InetAddress.getLocalHost(); if (jdkSuppliedAddress == null) { throw new UnknownHostException("The JDK InetAddress.getLocalHost() method unexpectedly returned null."); } return jdkSuppliedAddress; } catch (Exception e) { UnknownHostException unknownHostException = new UnknownHostException( "Failed to determine LAN address: " + e); unknownHostException.initCause(e); throw unknownHostException; } } public static String getOutIP() { try { URL whatismyip = new URL("http://checkip.amazonaws.com"); BufferedReader in = new BufferedReader(new InputStreamReader(whatismyip.openStream())); String ip = in.readLine(); return ip; // System.out.println("Public IP Address: " + ip); } catch (Exception e) { // System.out.println("Error occurred: " + e.getMessage()); } return ""; } }
獲取本機ip: 172.17.16.1 獲取本機ip(排除虛擬機干擾): 192.168.100.100 獲取本機公網(wǎng)ip: 14.145.43.147
這里打印出來的便對應上前言命令行截圖里的ip信息,然后公網(wǎng)ip對應的是百度搜索ip查到的公網(wǎng)ip地址
五、手動禁用虛擬機排除干擾
除了用代碼邏輯排除虛擬機干擾,我們也可以直接禁用電腦的虛擬機適配器。
步驟:
- win+R
- devmgmt.msc 打開設(shè)備管理器
- 找到網(wǎng)絡適配器-Hyper-V Virtual 開頭的 右鍵禁用
此時win+R cmd 輸入ipconfig,可以看到已經(jīng)沒有虛擬機ip了
此時java使用
InetAddress.getLocalHost().getHostAddress()
也可以獲取到192.168開頭的wifi地址了
總結(jié)
到此這篇關(guān)于Java獲取本機IP地址的文章就介紹到這了,更多相關(guān)Java獲取本機IP地址內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家!
相關(guān)文章
springboot全局異常處理方式@ControllerAdvice和@ExceptionHandler
文章總結(jié)了個人在處理全局異常處理時的經(jīng)驗,包括使用`StatusEnum`來定義狀態(tài)碼,旨在為讀者提供參考,并鼓勵大家支持腳本之家2024-11-11JPA如何設(shè)置表名和實體名,表字段與實體字段的對應
這篇文章主要介紹了JPA如何設(shè)置表名和實體名,表字段與實體字段的對應,具有很好的參考價值,希望對大家有所幫助。如有錯誤或未考慮完全的地方,望不吝賜教2021-11-11SpringBoot如何使用TestEntityManager進行JPA集成測試
TestEntityManager是Spring Framework提供的一個測試框架,它可以幫助我們進行 JPA 集成測試,在本文中,我們將介紹如何使用 TestEntityManager 進行 JPA 集成測試,感興趣的跟著小編一起來學習吧2023-06-06Spring Boot整合MyBatis-Plus實現(xiàn)CRUD操作的示例代碼
本文主要介紹了Spring Boot整合MyBatis-Plus實現(xiàn)CRUD操作,可以快速實現(xiàn)數(shù)據(jù)庫的增刪改查操作,文中通過示例代碼介紹的非常詳細,需要的朋友們下面隨著小編來一起學習學習吧2025-04-04