㈠ java中獲取本地IP地址

方法如下：
方法一，使用CMD命令：
public static String getLocalIPForCMD(){
StringBuilder sb = new StringBuilder();
String command = "cmd.exe /c ipconfig | findstr IPv4";
try {
Process p = Runtime.getRuntime().exec(command);
BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line = null;
while((line = br.readLine()) != null){
line = line.substring(line.lastIndexOf(":")+2,line.length());
sb.append(line);
}
br.close();
p.destroy();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
方法二，使用Java方法：
public static String getLocalIPForJava(){
StringBuilder sb = new StringBuilder();
try {
Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
while (en.hasMoreElements()) {
NetworkInterface intf = (NetworkInterface) en.nextElement();
Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses();
while (enumIpAddr.hasMoreElements()) {
InetAddress inetAddress = (InetAddress) enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress() && !inetAddress.isLinkLocalAddress()
&& inetAddress.isSiteLocalAddress()) {
sb.append(inetAddress.getHostAddress().toString()+"\n");
}
}
}
} catch (SocketException e) { }
return sb.toString();
}

㈡ java通過域名怎麼獲取本機ip

import java.net.InetAddress;
import java.net.UnknownHostException;
public class NsLookup {
static public void main(String[] args) {
try {
System.out.println("try");
InetAddress address = InetAddress.getByName(args[0]);
System.out.println(args[0]+" : "+address.getHostAddress());

}catch(UnknownHostException uhe) {
System.out.println("catch");
System.err.println("Unable to find: "+args[0]);

}
}

}

㈢ java如何獲取當前登錄ip

為適應不同的網路情況，提供這個類：看下面的代碼吧，Copy過去就能用。
import javax.servlet.http.HttpServletRequest;

public class HttpUtil {

public static String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}
}

㈣ JAVA獲取IP地址

public static void main(String[] args) { try { // 獲取計算機名 String name = InetAddress.getLocalHost().getHostName(); // 獲取IP地址 String ip = InetAddress.getLocalHost().getHostAddress(); System.out.println("計算機名："+name); System.out.println("IP地址："+ip); } catch (UnknownHostException e) { System.out.println("異常：" + e); e.printStackTrace(); } }
是否可以解決您的問題？

㈤ 如何用java獲取本地ip地址

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

/**
* @author Becolette
* @description TODO
* @date 2015-11-5 下午01:58:46
*/
public class IpAddress {
public static String find() {
List<String> ips = new ArrayList<String>();
// 返回所有網路介面的一個枚舉實例
Enumeration<?> allNetInterfaces = null;
try {
allNetInterfaces = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
e.printStackTrace();
}
InetAddress ip = null;
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
while (addresses.hasMoreElements()) {
// 獲得當前網路介面
ip = (InetAddress) addresses.nextElement();
if (ip != null && ip instanceof Inet4Address && ip.getHostAddress().indexOf(".") != -1) {
ips.add(ip.getHostAddress());
}
}
}
if (ips.size() == 1) {
return ips.get(0);
} else {
for (String ipa : ips) {
if (!"127.0.0.1".equals(ipa)) {
return ipa;
}
}
}
return MacAddress.find();
}
}

㈥ java怎麼獲取請求的ip

java獲取外網ip地址方法：
public class Main {

public static void main(String[] args) throws SocketException {
System.out.println(Main.getRealIp());
}

public static String getRealIp() throws SocketException {
String localip = null;// 本地IP，如果沒有配置外網IP則返回它
String netip = null;// 外網IP

Enumeration<NetworkInterface> netInterfaces =
NetworkInterface.getNetworkInterfaces();
InetAddress ip = null;
boolean finded = false;// 是否找到外網IP
while (netInterfaces.hasMoreElements() && !) {
NetworkInterface ni = netInterfaces.nextElement();
Enumeration<InetAddress> address = ni.getInetAddresses();
while (address.hasMoreElements()) {
ip = address.nextElement();
if (!ip.isSiteLocalAddress()
&& !ip.isLoopbackAddress()
&& ip.getHostAddress().indexOf(":") == -1) {// 外網IP
netip = ip.getHostAddress();
finded = true;
break;
} else if (ip.isSiteLocalAddress()
&& !ip.isLoopbackAddress()
&& ip.getHostAddress().indexOf(":") == -1) {// 內網IP
localip = ip.getHostAddress();
}
}
}

if (netip != null && !"".equals(netip)) {
return netip;
} else {
return localip;
}
}
}

㈦ 怎樣用JAVA程序獲取本機ip

import java.net.InetAddress;
import java.net.UnknownHostException;

public class Test
{
public static void main(String[] args) throws UnknownHostException
{
InetAddress inet = InetAddress.getLocalHost();
System.out.println("本機的ip=" + inet.getHostAddress());

}
}

㈧ 如何用 Java 獲取系統 IP

public String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}