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说到获取ip地址，有人可能会想到，直接用InetAddress.getLocalHost().getHostAddress()。实际上这个是不对的，因为一台机器上可能有多个网络接口（一般指网卡或者虚拟网卡），因此也就有多个ip地址，所以我们需要列出所有的网络接口及其对应的ip地址。代码如下：
public static void main(String[] args) throws Exception {
Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = netInterfaces.nextElement();
System.out.println("网络接口名称：" + ni.getDisplayName());
Enumeration<InetAddress> ia = ni.getInetAddresses();
while (ia.hasMoreElements()) {
InetAddress ip = ia.nextElement();
System.out.println(ip.getHostAddress());
}
}
}
网络接口名称：Software Loopback Interface 1 0:0:0:0:0:0:0:1 127.0.0.1 网络接口名称：WAN Miniport (SSTP) 网络接口名称：Microsoft ISATAP Adapter #6 fe80:0:0:0:0:5efe:c0a8:bf01%3 网络接口名称：Microsoft Kernel Debug Network Adapter 网络接口名称：Microsoft ISATAP Adapter #4 fe80:0:0:0:0:5efe:c0a8:167%5 网络接口名称：WAN Miniport (Network Monitor) 网络接口名称：Microsoft ISATAP Adapter #5 网络接口名称：WAN Miniport (IPv6) 网络接口名称：Microsoft ISATAP Adapter #2 fe80:0:0:0:0:5efe:c0a8:b501%9 网络接口名称：WAN Miniport (IP) 网络接口名称：WAN Miniport (PPPOE) 网络接口名称：WAN Miniport (L2TP) 网络接口名称：Microsoft Hosted Network Virtual Adapter fe80:0:0:0:b9b1:54f2:26a3:e07f%13 192.168.191.1 网络接口名称：Microsoft Teredo Tunneling Adapter 2001:0:5ef5:79fd:c5b:37fd:3f57:fe98 fe80:0:0:0:c5b:37fd:3f57:fe98%14 网络接口名称：VMware Virtual Ethernet Adapter for VMnet8 fe80:0:0:0:39ac:b0f8:cb0c:2868%15 192.168.181.1 网络接口名称：Broadcom 802.11 ÍøÂçÊÊÅäÆ÷Ì?ÎÞÏ?ÖÓòÍø fe80:0:0:0:3cb8:6486:b40b:1cb5%16 192.168.1.103 网络接口名称：VMware Virtual Ethernet Adapter for VMnet1 fe80:0:0:0:2dd6:2ca:d599:b57e%17 192.168.72.1 网络接口名称：Microsoft Wi-Fi Direct Virtual Adapter fe80:0:0:0:4cad:987a:b4a1:f1bb%18 网络接口名称：Realtek PCIe FE Family Controller fe80:0:0:0:dbb:193c:865f:c467%19 网络接口名称：WAN Miniport (PPTP) 网络接口名称：WAN Miniport (IKEv2) 网络接口名称：Microsoft ISATAP Adapter #8 fe80:0:0:0:0:5efe:c0a8:4801%22 网络接口名称：Remote NDIS based Internet Sharing Device 网络接口名称：Realtek PCIe FE Family Controller-WFP Native MAC Layer LightWeight Filter-0000 网络接口名称：Realtek PCIe FE Family Controller-Liebao Wifi NAT Driver-0000 网络接口名称：Realtek PCIe FE Family Controller-QoS Packet Scheduler-0000 网络接口名称：Realtek PCIe FE Family Controller-WFP 802.3 MAC Layer LightWeight Filter-0000 网络接口名称：Broadcom 802.11 ÍøÂçÊÊÅäÆ÷Ì?ÎÞÏ?ÖÓòÍø¡£-WFP Native MAC Layer LightWeight Filter-00 网络接口名称：Broadcom 802.11 ÍøÂçÊÊÅäÆ÷Ì?ÎÞÏ?ÖÓòÍø¡£-Virtual WiFi Filter Driver-00 网络接口名称：Broadcom 802.11 ÍøÂçÊÊÅäÆ÷Ì?ÎÞÏ?ÖÓòÍø¡£-Native WiFi Filter Driver-00 网络接口名称：Broadcom 802.11 ÍøÂçÊÊÅäÆ÷Ì?ÎÞÏ?ÖÓòÍø¡£-Liebao Wifi NAT Driver-00 网络接口名称：Broadcom 802.11 ÍøÂçÊÊÅäÆ÷Ì?ÎÞÏ?ÖÓòÍø¡£-QoS Packet Scheduler-00 网络接口名称：Broadcom 802.11 ÍøÂçÊÊÅäÆ÷Ì?ÎÞÏ?ÖÓòÍø¡£-WFP 802.3 MAC Layer LightWeight Filter-00 网络接口名称：Microsoft Wi-Fi Direct Virtual Adapter-WFP Native MAC Layer LightWeight Filter-0000 网络接口名称：Microsoft Hosted Network Virtual Adapter-WFP Native MAC Layer LightWeight Filter-0000 网络接口名称：Microsoft Hosted Network Virtual Adapter-Native WiFi Filter Driver-0000 网络接口名称：Microsoft Wi-Fi Direct Virtual Adapter-Native WiFi Filter Driver-0000 网络接口名称：Microsoft Wi-Fi Direct Virtual Adapter-Liebao Wifi NAT Driver-0000 网络接口名称：Microsoft Wi-Fi Direct Virtual Adapter-QoS Packet Scheduler-0000 网络接口名称：Microsoft Wi-Fi Direct Virtual Adapter-WFP 802.3 MAC Layer LightWeight Filter-0000 网络接口名称：Microsoft Hosted Network Virtual Adapter-Liebao Wifi NAT Driver-0000 网络接口名称：Microsoft Hosted Network Virtual Adapter-QoS Packet Scheduler-0000 网络接口名称：Microsoft Hosted Network Virtual Adapter-WFP 802.3 MAC Layer LightWeight Filter-0000 网络接口名称：WAN Miniport (IP)-WFP Native MAC Layer LightWeight Filter-0000 网络接口名称：WAN Miniport (IP)-Liebao Wifi NAT Driver-0000 网络接口名称：WAN Miniport (IP)-QoS Packet Scheduler-0000 网络接口名称：WAN Miniport (IPv6)-WFP Native MAC Layer LightWeight Filter-0000 网络接口名称：WAN Miniport (IPv6)-Liebao Wifi NAT Driver-0000 网络接口名称：WAN Miniport (IPv6)-QoS Packet Scheduler-0000 网络接口名称：WAN Miniport (Network Monitor)-WFP Native MAC Layer LightWeight Filter-0000 网络接口名称：WAN Miniport (Network Monitor)-Liebao Wifi NAT Driver-0000 网络接口名称：WAN Miniport (Network Monitor)-QoS Packet Scheduler-0000
其中像fe80:0:0:0:0:5efe:c0a8:bf01%3这种是IPV6格式的地址，共128位，每16位用分号分开，最后的3%表示这个表示该地址仅限于标号为3的网络接口，而在其他网络接口这个地址是无效的。
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原文地址：http://www.cnblogs.com/gjb724332682/p/5838444.html
