Java 如何显示特定接口的IP地址?
因此,我试图通过编程从一个特定接口获取IP地址,并将其显示在文本字段中。问题是它列出了几个。如何迭代并获取双频无线AC 3160的IP地址Java 如何显示特定接口的IP地址?,java,ip,network-interface,Java,Ip,Network Interface,因此,我试图通过编程从一个特定接口获取IP地址,并将其显示在文本字段中。问题是它列出了几个。如何迭代并获取双频无线AC 3160的IP地址 Dual Band Wireless-AC 3160 172.16.36.50 Dual Band Wireless-AC 3160 fe80:0:0:0:8877:2e6a:e4a1:c24f%wlan0 Virtual Ethernet Adapter for VMnet1 192.168.31.1 Virtual Ethernet Adapter fo
Dual Band Wireless-AC 3160 172.16.36.50
Dual Band Wireless-AC 3160 fe80:0:0:0:8877:2e6a:e4a1:c24f%wlan0
Virtual Ethernet Adapter for VMnet1 192.168.31.1
Virtual Ethernet Adapter for VMnet1 fe80:0:0:0:592c:71ac:f8d9:5899%eth3
Virtual Ethernet Adapter for VMnet8 192.168.245.1
Virtual Ethernet Adapter for VMnet8 fe80:0:0:0:ed34:4a7:cb5c:16ce%eth4
下面是我用来显示界面的代码:
String ip;
try {
Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
int position;
while (interfaces.hasMoreElements()) {
NetworkInterface iface = interfaces.nextElement();
//This filters out the interfaces
// filters out 127.0.0.1 and inactive interfaces
if (iface.isLoopback() || !iface.isUp())
continue;
Enumeration<InetAddress> addresses = iface.getInetAddresses();
while(addresses.hasMoreElements()) {
InetAddress addr = addresses.nextElement();
ip = addr.getHostAddress();
System.out.println(iface.getDisplayName() + " " + ip);
}
}
} catch (SocketException e) {
throw new RuntimeException(e);
}
字符串ip;
试一试{
枚举接口=NetworkInterface.getNetworkInterfaces();
内部位置;
while(interfaces.hasMoreElements()){
NetworkInterface iface=interfaces.nextElement();
//这会过滤掉接口
//过滤掉127.0.0.1和非活动接口
if(iface.isLoopback()| |!iface.isUp())
继续;
枚举地址=iface.getInetAddresses();
while(addresses.hasMoreElements()){
InetAddress addr=地址.nextElement();
ip=addr.getHostAddress();
System.out.println(iface.getDisplayName()+“”+ip);
}
}
}捕获(SocketException e){
抛出新的运行时异常(e);
}
由于接口有两个IP地址,因此您将获得两个IP地址。总的来说,可能会有更多
如果只想列出IPv4地址,可以检查该地址是否为Inet4Address的实例使用此代码
import java.io.*;
import java.net.*;
import java.util.*;
import static java.lang.System.out;
public class ListNets {
public static void main(String args[]) throws SocketException {
Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
for (NetworkInterface netint : Collections.list(nets))
displayInterfaceInformation(netint);
}
static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {
out.printf("Display name: %s\n", netint.getDisplayName());
out.printf("Name: %s\n", netint.getName());
Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
for (InetAddress inetAddress : Collections.list(inetAddresses)) {
out.printf("InetAddress: %s\n", inetAddress);
}
out.printf("\n");
}
}
import java.io.*;
导入java.net。*;
导入java.util.*;
导入静态java.lang.System.out;
公共类列表网{
publicstaticvoidmain(字符串args[])抛出SocketException{
枚举网络=NetworkInterface.getNetworkInterfaces();
用于(网络接口netint:Collections.list(nets))
显示接口信息(netint);
}
静态无效显示接口信息(NetworkInterface netint)引发SocketException{
out.printf(“显示名称:%s\n”,netint.getDisplayName());
out.printf(“名称:%s\n”,netint.getName());
枚举inetAddresses=netint.getInetAddresses();
用于(InetAddress:Collections.list(inetAddresses)){
out.printf(“InetAddress:%s\n”,InetAddress);
}
out.printf(“\n”);
}
}
我通过以下操作解决了这个问题。谢谢
String ip;
try {
Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
int position =0;
while (interfaces.hasMoreElements()) {
NetworkInterface iface = interfaces.nextElement();
//This filters out the interfaces
// filters out 127.0.0.1 and inactive interfaces
if (iface.isLoopback() || !iface.isUp())
continue;
Enumeration<InetAddress> addresses = iface.getInetAddresses();
while(addresses.hasMoreElements()) {
InetAddress addr = addresses.nextElement();
ip = addr.getHostAddress();
position++;
if (position == 0 ) {
System.out.println(iface.getDisplayName() + " " + ip);
}
else{
break;
}
}
}
} catch (SocketException e) {
throw new RuntimeException(e);
}
字符串ip;
试一试{
枚举接口=NetworkInterface.getNetworkInterfaces();
int位置=0;
while(interfaces.hasMoreElements()){
NetworkInterface iface=interfaces.nextElement();
//这会过滤掉接口
//过滤掉127.0.0.1和非活动接口
if(iface.isLoopback()| |!iface.isUp())
继续;
枚举地址=iface.getInetAddresses();
while(addresses.hasMoreElements()){
InetAddress addr=地址.nextElement();
ip=addr.getHostAddress();
位置++;
如果(位置==0){
System.out.println(iface.getDisplayName()+“”+ip);
}
否则{
打破
}
}
}
}捕获(SocketException e){
抛出新的运行时异常(e);
}
哎呀,我修改了措辞以消除歧义。如果我只想列出我提到的接口的IP地址,我会怎么做?所以问题是你不知道你想使用哪个接口?Mac地址的前三个八位字节用于识别供应商,您可以将虚拟接口列入黑名单,也可以将供应商列入白名单。虽然这个答案可能是正确且有用的,但您最好解释一下它如何帮助解决问题。如果有一个变化(可能无关)导致它停止工作,并且用户需要了解它曾经是如何工作的,那么这在将来变得特别有用。因此,您只需要列表中的第一个界面,不管它是什么?