ip地址

package demo.sort;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import java.util.LinkedList;
import java.util.List;

public class WebToolUtils {

    /**
     * 获取本地IP地址
     *
     * @throws Exception
     */
    public static String getLocalIP() throws Exception {
//        if (isWindowsOS()) {
//            return InetAddress.getLocalHost().getHostAddress();
//        } else {
//            return getLinuxLocalIp();
//        }
    	try{
			Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();
			while (allNetInterfaces.hasMoreElements()){
				NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
				Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
				while (addresses.hasMoreElements()){
					InetAddress ip = (InetAddress) addresses.nextElement();
					if (ip != null 
							&& ip instanceof Inet4Address
                    		&& !ip.isLoopbackAddress() //loopback地址即本机地址，IPv4的loopback范围是127.0.0.0 ~ 127.255.255.255
                    		&& ip.getHostAddress().indexOf(":")==-1){
						return ip.getHostAddress();
					} 
				}
			}
		}catch(Exception e){
			e.printStackTrace();
		}
		return null;
    }


    /**
     * 获取Linux下的IP地址
     *
     * @return IP地址
     * @throws Exception
     */
    private static String getLinuxLocalIp() throws Exception {
        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;
//                                System.out.println(ipaddress);
                            }
                        }
                    }
                }
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return ip;
    }


    /**
     * 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;
    }
    
    private static List<String> getIpAddress() {
        List<String> list = new LinkedList<>();
        Enumeration enumeration = null;
		try {
			enumeration = NetworkInterface.getNetworkInterfaces();
		} catch (SocketException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
        while (enumeration.hasMoreElements()) {
            NetworkInterface network = (NetworkInterface) enumeration.nextElement();
            Enumeration addresses = network.getInetAddresses();
            while (addresses.hasMoreElements()) {
                InetAddress address = (InetAddress) addresses.nextElement();
                if (address != null && (address instanceof Inet4Address || address instanceof Inet6Address)) {
                    list.add(address.getHostAddress());
                }
            }
        }
        return list;
    }

    private static List<String> getIpAddress1(){
        List<String> list = new LinkedList<>();
        Enumeration enumeration = null;
		try {
			enumeration = NetworkInterface.getNetworkInterfaces();
		} catch (SocketException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
        while (enumeration.hasMoreElements()) {
            NetworkInterface network = (NetworkInterface) enumeration.nextElement();
            try {
				if (network.isVirtual() || !network.isUp()) {
				    continue;
				} else {
				    Enumeration addresses = network.getInetAddresses();
				    while (addresses.hasMoreElements()) {
				        InetAddress address = (InetAddress) addresses.nextElement();
				        if (address != null && (address instanceof Inet4Address || address instanceof Inet6Address)) {
				            list.add(address.getHostAddress());
				        }
				    }
				}
			} catch (SocketException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
        }
        return list;
    }


    public static void main(String[] args) throws Exception {
        System.out.println(getLocalIP());
        System.out.println(getLinuxLocalIp());
        System.out.println(getIpAddress());
        System.out.println(getIpAddress1());

    }
}