これは、上記の受け入れられた回答の実際の例です!このNetIdentityクラスは、内部ホストIPとローカルループバックの両方を格納します。上記のようにDNSベースのサーバーを使用している場合は、さらにチェックを追加するか、構成ファイルルートに移動する必要がある場合があります。
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Enumeration;
/**
* Class that allows a device to identify itself on the INTRANET.
*
* @author Decoded4620 2016
*/
public class NetIdentity {
private String loopbackHost = "";
private String host = "";
private String loopbackIp = "";
private String ip = "";
public NetIdentity(){
try{
Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
while(interfaces.hasMoreElements()){
NetworkInterface i = interfaces.nextElement();
if(i != null){
Enumeration<InetAddress> addresses = i.getInetAddresses();
System.out.println(i.getDisplayName());
while(addresses.hasMoreElements()){
InetAddress address = addresses.nextElement();
String hostAddr = address.getHostAddress();
// local loopback
if(hostAddr.indexOf("127.") == 0 ){
this.loopbackIp = address.getHostAddress();
this.loopbackHost = address.getHostName();
}
// internal ip addresses (behind this router)
if( hostAddr.indexOf("192.168") == 0 ||
hostAddr.indexOf("10.") == 0 ||
hostAddr.indexOf("172.16") == 0 ){
this.host = address.getHostName();
this.ip = address.getHostAddress();
}
System.out.println("\t\t-" + address.getHostName() + ":" + address.getHostAddress() + " - "+ address.getAddress());
}
}
}
}
catch(SocketException e){
}
try{
InetAddress loopbackIpAddress = InetAddress.getLocalHost();
this.loopbackIp = loopbackIpAddress.getHostName();
System.out.println("LOCALHOST: " + loopbackIp);
}
catch(UnknownHostException e){
System.err.println("ERR: " + e.toString());
}
}
public String getLoopbackHost(){
return loopbackHost;
}
public String getHost(){
return host;
}
public String getIp(){
return ip;
}
public String getLoopbackIp(){
return loopbackIp;
}
}
このコードを実行すると、実際には次のように出力されます。
Software Loopback Interface 1
-127.0.0.1:127.0.0.1 - [B@19e1023e
-0:0:0:0:0:0:0:1:0:0:0:0:0:0:0:1 - [B@7cef4e59
Broadcom 802.11ac Network Adapter
-VIKING.yourisp.com:192.168.1.142 - [B@64b8f8f4
-fe80:0:0:0:81fa:31d:21c9:85cd%wlan0:fe80:0:0:0:81fa:31d:21c9:85cd%wlan0 - [B@2db0f6b2
Microsoft Kernel Debug Network Adapter
Intel Edison USB RNDIS Device
Driver for user-mode network applications
Cisco Systems VPN Adapter for 64-bit Windows
VirtualBox Host-Only Ethernet Adapter
-VIKING:192.168.56.1 - [B@3cd1f1c8
-VIKING:fe80:0:0:0:d599:3cf0:5462:cb7%eth4 - [B@3a4afd8d
LogMeIn Hamachi Virtual Ethernet Adapter
-VIKING:25.113.118.39 - [B@1996cd68
-VIKING:2620:9b:0:0:0:0:1971:7627 - [B@3339ad8e
-VIKING:fe80:0:0:0:51bf:994d:4656:8486%eth5 - [B@555590
Bluetooth Device (Personal Area Network)
-fe80:0:0:0:4c56:8009:2bca:e16b%eth6:fe80:0:0:0:4c56:8009:2bca:e16b%eth6 - [B@3c679bde
Bluetooth Device (RFCOMM Protocol TDI)
Intel(R) Ethernet Connection (2) I218-V
-fe80:0:0:0:4093:d169:536c:7c7c%eth7:fe80:0:0:0:4093:d169:536c:7c7c%eth7 - [B@16b4a017
Microsoft Wi-Fi Direct Virtual Adapter
-fe80:0:0:0:103e:cdf0:c0ac:1751%wlan1:fe80:0:0:0:103e:cdf0:c0ac:1751%wlan1 - [B@8807e25
VirtualBox Host-Only Ethernet Adapter-HHD Software NDIS 6.0 Filter Driver-0000
VirtualBox Host-Only Ethernet Adapter-WFP Native MAC Layer LightWeight Filter-0000
VirtualBox Host-Only Ethernet Adapter-HHD Software NDIS 6.0 Filter Driver-0001
VirtualBox Host-Only Ethernet Adapter-HHD Software NDIS 6.0 Filter Driver-0002
VirtualBox Host-Only Ethernet Adapter-VirtualBox NDIS Light-Weight Filter-0000
VirtualBox Host-Only Ethernet Adapter-HHD Software NDIS 6.0 Filter Driver-0003
VirtualBox Host-Only Ethernet Adapter-QoS Packet Scheduler-0000
VirtualBox Host-Only Ethernet Adapter-HHD Software NDIS 6.0 Filter Driver-0004
VirtualBox Host-Only Ethernet Adapter-WFP 802.3 MAC Layer LightWeight Filter-0000
VirtualBox Host-Only Ethernet Adapter-HHD Software NDIS 6.0 Filter Driver-0005
Intel(R) Ethernet Connection (2) I218-V-HHD Software NDIS 6.0 Filter Driver-0000
Intel(R) Ethernet Connection (2) I218-V-WFP Native MAC Layer LightWeight Filter-0000
Intel(R) Ethernet Connection (2) I218-V-HHD Software NDIS 6.0 Filter Driver-0001
Intel(R) Ethernet Connection (2) I218-V-Shrew Soft Lightweight Filter-0000
Intel(R) Ethernet Connection (2) I218-V-HHD Software NDIS 6.0 Filter Driver-0002
Intel(R) Ethernet Connection (2) I218-V-VirtualBox NDIS Light-Weight Filter-0000
Intel(R) Ethernet Connection (2) I218-V-HHD Software NDIS 6.0 Filter Driver-0003
Intel(R) Ethernet Connection (2) I218-V-QoS Packet Scheduler-0000
Intel(R) Ethernet Connection (2) I218-V-HHD Software NDIS 6.0 Filter Driver-0004
Intel(R) Ethernet Connection (2) I218-V-WFP 802.3 MAC Layer LightWeight Filter-0000
Intel(R) Ethernet Connection (2) I218-V-HHD Software NDIS 6.0 Filter Driver-0005
Broadcom 802.11ac Network Adapter-WFP Native MAC Layer LightWeight Filter-0000
Broadcom 802.11ac Network Adapter-Virtual WiFi Filter Driver-0000
Broadcom 802.11ac Network Adapter-Native WiFi Filter Driver-0000
Broadcom 802.11ac Network Adapter-HHD Software NDIS 6.0 Filter Driver-0003
Broadcom 802.11ac Network Adapter-Shrew Soft Lightweight Filter-0000
Broadcom 802.11ac Network Adapter-HHD Software NDIS 6.0 Filter Driver-0004
Broadcom 802.11ac Network Adapter-VirtualBox NDIS Light-Weight Filter-0000
Broadcom 802.11ac Network Adapter-HHD Software NDIS 6.0 Filter Driver-0005
Broadcom 802.11ac Network Adapter-QoS Packet Scheduler-0000
Broadcom 802.11ac Network Adapter-HHD Software NDIS 6.0 Filter Driver-0006
Broadcom 802.11ac Network Adapter-WFP 802.3 MAC Layer LightWeight Filter-0000
Broadcom 802.11ac Network Adapter-HHD Software NDIS 6.0 Filter Driver-0007
Microsoft Wi-Fi Direct Virtual Adapter-WFP Native MAC Layer LightWeight Filter-0000
Microsoft Wi-Fi Direct Virtual Adapter-Native WiFi Filter Driver-0000
Microsoft Wi-Fi Direct Virtual Adapter-HHD Software NDIS 6.0 Filter Driver-0002
Microsoft Wi-Fi Direct Virtual Adapter-Shrew Soft Lightweight Filter-0000
Microsoft Wi-Fi Direct Virtual Adapter-HHD Software NDIS 6.0 Filter Driver-0003
Microsoft Wi-Fi Direct Virtual Adapter-VirtualBox NDIS Light-Weight Filter-0000
Microsoft Wi-Fi Direct Virtual Adapter-HHD Software NDIS 6.0 Filter Driver-0004
Microsoft Wi-Fi Direct Virtual Adapter-QoS Packet Scheduler-0000
Microsoft Wi-Fi Direct Virtual Adapter-HHD Software NDIS 6.0 Filter Driver-0005
Microsoft Wi-Fi Direct Virtual Adapter-WFP 802.3 MAC Layer LightWeight Filter-0000
Microsoft Wi-Fi Direct Virtual Adapter-HHD Software NDIS 6.0 Filter Driver-0006
私が使用するために、Upnpサーバーをセットアップしています。これは、探していた「パターン」を理解するのに役立ちました。返されるオブジェクトには、イーサネットアダプター、ネットワークアダプター、仮想ネットワークアダプター、ドライバー、VPNクライアントアダプターなどがあります。すべてにアドレスがあるわけではありません。したがって、そうでないインターフェースオブジェクトはスキップする必要があります。
これを現在のループに追加することもできます NetworkInterface i
while(interfaces.hasMoreElements()){
Enumeration<InetAddress> addresses = i.getInetAddresses();
System.out.println(i.getDisplayName());
System.out.println("\t- name:" + i.getName());
System.out.println("\t- idx:" + i.getIndex());
System.out.println("\t- max trans unit (MTU):" + i.getMTU());
System.out.println("\t- is loopback:" + i.isLoopback());
System.out.println("\t- is PPP:" + i.isPointToPoint());
System.out.println("\t- isUp:" + i.isUp());
System.out.println("\t- isVirtual:" + i.isVirtual());
System.out.println("\t- supportsMulticast:" + i.supportsMulticast());
}
そして、次のように出力に情報が表示されます。
Software Loopback Interface 1
- name:lo
- idx:1
- max trans unit (MTU):-1
- is loopback:true
- is PPP:false
- isUp:true
- isVirtual:false
- supportsMulticast:true
-ADRESS: [127.0.0.1(VIKING-192.168.56.1)]127.0.0.1:127.0.0.1 - [B@19e1023e
-ADRESS: [0:0:0:0:0:0:0:1(VIKING-192.168.56.1)]0:0:0:0:0:0:0:1:0:0:0:0:0:0:0:1 - [B@7cef4e59
Broadcom 802.11ac Network Adapter
- name:wlan0
- idx:2
- max trans unit (MTU):1500
- is loopback:false
- is PPP:false
- isUp:true
- isVirtual:false
- supportsMulticast:true
-ADRESS: [VIKING.monkeybrains.net(VIKING-192.168.56.1)]VIKING.monkeybrains.net:192.168.1.142 - [B@64b8f8f4
-ADRESS: [fe80:0:0:0:81fa:31d:21c9:85cd%wlan0(VIKING-192.168.56.1)]fe80:0:0:0:81fa:31d:21c9:85cd%wlan0:fe80:0:0:0:81fa:31d:21c9:85cd%wlan0 - [B@2db0f6b2
Microsoft Kernel Debug Network Adapter
- name:eth0
- idx:3
- max trans unit (MTU):-1
- is loopback:false
- is PPP:false
- isUp:false
- isVirtual:false
- supportsMulticast:true