擷取本機真實ip位址,去除127.0.0.1等無用位址
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- 完全代碼
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- 附錄:這也是從人家那學習而來,因為先前擷取本機位址的時候有時候擷取的是真實位址,有時候是127.0.0.1,這些代碼是為了過濾那些不需要的位址,在此做個記錄,各位想要用随便用
完全代碼
package com.waving.test;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;
public class IPMain {
public static void main(String[] args) {
String hostIp = getHostIp();
System.out.println("hostIp = " + hostIp);
}
private static String getHostIp() {
try {
Enumeration allNetInterfaces = NetworkInterface.getNetworkInterfaces();
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
Enumeration addresses = netInterface.getInetAddresses();
while (addresses.hasMoreElements()) {
InetAddress ip = (InetAddress) addresses.nextElement();
if (ip != null
&& ip instanceof Inet4Address
&& !ip.isLoopbackAddress() //loopback位址即本機位址,IPv4的loopback範圍是127.0.0.0 ~ 127.255.255.255
&& ip.getHostAddress().indexOf(":") == -1) {
System.out.println("本機的IP = " + ip.getHostAddress());
return ip.getHostAddress();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
附錄:這也是從人家那學習而來,因為先前擷取本機位址的時候有時候擷取的是真實位址,有時候是127.0.0.1,這些代碼是為了過濾那些不需要的位址,在此做個記錄,各位想要用随便用