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Java获取本机IP地址的三种方法总结

1 获取局域网IP地址

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InetAddress.getLocalHost().getHostAddress();

2 获取全部 IPV4/IPV6 IP地址

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private static List<String> getIpAddress() throws SocketException {

     List<String> list = new LinkedList<>();

     Enumeration enumeration = NetworkInterface.getNetworkInterfaces();

     while (enumeration.hasMoreElements()) {

         NetworkInterface network = (NetworkInterface) enumeration.nextElement();

         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());

                 }

             }

         }

     }

     return list;

}

3 获取全部存放本机IP地址

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private static List<String> getIpAddress() throws SocketException {

     List<String> list = new LinkedList<>();

     Enumeration enumeration = NetworkInterface.getNetworkInterfaces();

     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;

}

知识点补充

IP地址(Internet Protocol Address)是指互联网协议地址,又译为网际协议地址。

IP地址是IP协议提供的一种统一的地址格式,它为互联网上的每一个网络和每一台主机分配一个逻辑地址,以此来屏蔽物理地址的差异。

IP地址是一个32位的二进制数,通常被分割为4个[8位二进制数](也就是4个字节)。IP地址通常用[点分十进制]表示成(a.b.c.d)的形式,其中,a,b,c,d都是0~255之间的十进制整数。例:点分十进IP地址(100.4.5.6),实际上是32位二进制数(01100100.00000100.00000101.00000110)。

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原文链接:https://blog.csdn.net/qq_34814092/article/details/123903353

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