java笔记----获取电脑上ip(内网ip)
private static String getHostIP(){ String tempIP = "127.0.0.1"; try { if(isIpv4(InetAddress.getLocalHost().getHostAddress())) tempIP = InetAddress.getLocalHost().getHostAddress(); } catch (UnknownHostException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } try{ Enumeration<NetworkInterface> networks = NetworkInterface.getNetworkInterfaces(); InetAddress ip = null; Enumeration<InetAddress> addrs; while (networks.hasMoreElements()) { addrs = networks.nextElement().getInetAddresses(); while (addrs.hasMoreElements()) { ip = addrs.nextElement(); if (ip != null && ip instanceof Inet4Address && ip.isSiteLocalAddress() && !ip.getHostAddress().equals(tempIP)) { if(isIpv4(ip.getHostAddress())) return ip.getHostAddress(); } } } return tempIP; } catch(Exception e){ System.out.println("获取IP地址抛出异常"); throw new RuntimeException(e); } } public static boolean isIpv4(String ipAddress) { String ip = "^(1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|[1-9])\\." +"(00?\\d|1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)\\." +"(00?\\d|1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)\\." +"(00?\\d|1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)$"; Pattern pattern = Pattern.compile(ip); Matcher matcher = pattern.matcher(ipAddress); return matcher.matches(); }
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作者:Honey_Badger —— 觉得这文章好,点一下左下角
出处:http://tk55.cnblogs.com/
posted on 2019-03-11 11:33 Honey_Badger 阅读(727) 评论(1) 编辑 收藏 举报