Java 获取本机IP

最新推荐文章于 2024-09-23 09:43:46 发布

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本文介绍了一种在Windows和Linux平台上获取非环回IP地址的方法。通过遍历网络接口并检查每个接口上的IPv4地址来实现。该方法跳过环回接口确保获取的是有效的外部IP地址。

windows

String hostAddress = Inet4Address.getLocalHost().getHostAddress();

linux and windows

获取第一个非环回ip

String hostAddress = null;
Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
while (networkInterfaces.hasMoreElements()) {
    NetworkInterface networkInterface = networkInterfaces.nextElement();
    if (networkInterface.getName().equals("lo")) {
        continue;
    }
    Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
    while (inetAddresses.hasMoreElements()) {
        InetAddress inetAddress = inetAddresses.nextElement();
        if (inetAddress != null && inetAddress instanceof Inet4Address) {
            hostAddress = inetAddress.getHostAddress();
            break;
        }
    }
    if (hostAddress != null) {
        break;
    }
}