自动获取windows或者linux系统IP

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1.获取Windows下的IP java.net.InetAddress.getLocalHost().getHostAddress(); 2.获取linux下的IP /** * 获取Linux下的IP地址 * * @return IP地址 * @throws SocketException */ private static String getLinuxLocalIp() throws SocketException { String ip = ""; try { for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); String name = intf.getName(); if (!name.contains("docker") && !name.contains("lo")) { for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress()) { String ipaddress = inetAddress.getHostAddress().toString(); if (!ipaddress.contains("::") && !ipaddress.contains("0:0:") && !ipaddress.contains("fe80")) { ip = ipaddress; } } } } } } catch (SocketException ex) { ip = "127.0.0.1"; ex.printStackTrace(); } return ip; } 3.判断操作系统的类型 /** * 判断操作系统是否是Windows * * @return */ public static boolean isWindowsOS() { boolean isWindowsOS = false; // 注：这里的system，系统指的是 JRE (runtime)system，不是指 OS String osName = System.getProperty("os.name"); if (osName.toLowerCase().indexOf("windows") > -1) { isWindowsOS = true; } return isWindowsOS; } 4.最后将上面三个方法进行整合 /** * 获取本地IP地址 * * @throws SocketException */ public static String getLocalIP() throws UnknownHostException,SocketException { if (isWindowsOS()) { return InetAddress.getLocalHost().getHostAddress(); } else { return getLinuxLocalIp(); } } 5.这里关于System.getProperty("os.name")说明一下（参考自http://blog.csdn.net/brotherdong90/article/details/49073941） key 注释 file.separator File separator (e.g.,"/") java.class.path Java classpath java.class.version Java class version number java.home Java installation directory java.vendor Java vendor-specific string java.vendor.url Java vendor URL java.version Java version number line.separator Line separator os.arch Operating system architecture os.name Operating system name path.separator Path separator (e.g.,":") user.dir User‘s current working directory user.home User home directory user.name User account name