Java获取ipv4地址

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.dpyx.cj.controller.CeshiController;
import sun.util.logging.resources.logging;
public class GetLocalIp {
private static Logger log = LoggerFactory.getLogger(GetLocalIp.class);
public static String getRealIP() {
try {
Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface
.getNetworkInterfaces();
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface) allNetInterfaces
.nextElement();
// 去除回环接口，子接口，未运行和接口
if (netInterface.isLoopback() || netInterface.isVirtual()
|| !netInterface.isUp()) {
continue;
}
if (!netInterface.getDisplayName().contains("Intel")
&& !netInterface.getDisplayName().contains("Realtek")) {
continue;
}
Enumeration<InetAddress> addresses = netInterface
.getInetAddresses();
//System.out.println(netInterface.getDisplayName());
while (addresses.hasMoreElements()) {
InetAddress ip = addresses.nextElement();
if (ip != null) {
// ipv4
if (ip instanceof Inet4Address) {
log.info("ipv4 =" + ip.getHostAddress());
return ip.getHostAddress();
}
}
}
break;
}
} catch (SocketException e) {
System.err.println("Error when getting host ip address"
+ e.getMessage());
}
return null;
}
}

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