怎么获取服务运行的机器真实ip，亲测三种方法有效

最新推荐文章于 2025-10-26 20:51:41 发布

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本文比较了三种Java方法来获取计算机实际可用的非内部IP地址，包括处理docker、lo环回地址及IPv6的情况，并探讨了异常处理和性能优化。

引入的包：

import java.net.Inet4Address;

import java.net.InetAddress;

import java.net.NetworkInterface;

import java.net.SocketException;

import java.util.Enumeration;

方法1：
private static String getHostIP() 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;
}







方法2：
private String getHostIP(){
    String tempIP = "127.0.0.1";
    try {
        tempIP = InetAddress.getLocalHost().getHostAddress();
    } catch (Exception e) {
        logger.error("PptFileUploadController-getHostIP221 获取机器ip失败, ", e);
    }
    System.out.println(tempIP);
    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)) {
                    return ip.getHostAddress();
                }
            }
        }
    } catch(Exception e){
        logger.error("PptFileUploadController-getHostIP223 获取机器ip失败, ", e);
    }
    return tempIP;
}






方法3：
private String getHostIP(){

    Enumeration<NetworkInterface> allNetInterfaces = null;
    String resultIP=null;
    try {
        allNetInterfaces = NetworkInterface.getNetworkInterfaces();
    } catch (Exception e) {
        logger.error("PptFileUploadController-getHostIP 获取机器ip失败, ", e);
    }
    InetAddress ip = null;
    while (allNetInterfaces.hasMoreElements()) {
        NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
        Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
        while (addresses.hasMoreElements()) {
            ip = (InetAddress) addresses.nextElement();
            if (ip != null && ip instanceof Inet4Address) {
                if (resultIP==null) {
                    resultIP= ip.getHostAddress();
                }
                System.out.println("本机地址是："+ip.getHostAddress());
            }
        }
    }
    return resultIP;

}