java取ip

‘壹’ java怎么获取请求的ip

java获取外网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，如果没有配置外网IP则返回它
String netip = null;// 外网IP

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

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

‘贰’ JAVA怎么获取IP地址

java代码获取ip地址方法是
调用java.net包下面的的InetAddress类获取。

‘叁’ JAVA获取IP地址

public static void main(String[] args) { try { // 获取计算机名 String name = InetAddress.getLocalHost().getHostName(); // 获取IP地址 String ip = InetAddress.getLocalHost().getHostAddress(); System.out.println("计算机名："+name); System.out.println("IP地址："+ip); } catch (UnknownHostException e) { System.out.println("异常：" + e); e.printStackTrace(); } }
是否可以解决您的问题？

‘肆’ java如何获取用户真实的ip

1、如果服务器如果没有采用反向代理，而且客户端没有用正向代理的话，那么可以获取客户端的真实IP地址request.getRemoteAddr()

2、如果服务器如果没有采用反向代理，而且客户端有用正向代理的话，那么通过request.getRemoteAddr()获取客户端的IP地址是客户端 的代理服务器的地址，并不是客户端的真实地址，

3、如果客户端使用的是多层代理的话，服务器获得的客户端地址是客户端的最外围代理服务器的地址如果服务器如果采用反向代理服务器，不管客户端采用的是何种方式访问服务器。

//获得客户端真实IP地址的方法一：
publicStringgetRemortIP(HttpServletRequestrequest){
if(request.getHeader("x-forwarded-for")==null){
returnrequest.getRemoteAddr();
}
returnrequest.getHeader("x-forwarded-for");
}
//获得客户端真实IP地址的方法二：
publicStringgetIpAddr(HttpServletRequestrequest){
Stringip=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();
}
returnip;
}

‘伍’ java怎么获取ip地址

java获取ip地址
public static void main(String[] args) { try { // 获取计算机名 String name = InetAddress.getLocalHost().getHostName(); // 获取IP地址 String ip = InetAddress.getLocalHost().getHostAddress(); System.out.println("计算机名："+name); System.out.println("IP地址："+ip); } catch (UnknownHostException e) { System.out.println("异常：" + e); e.printStackTrace(); } }

‘陆’ java中获取本地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();
}

‘柒’ java如何获取当前登录ip

第一种：获取本机的IP
Enumeration<NetworkInterface>
netInterfaces
=
null;
try
{
netInterfaces
=
NetworkInterface.getNetworkInterfaces();
while
(netInterfaces.hasMoreElements())
{
NetworkInterface
ni
=
netInterfaces.nextElement();
System.out.println("DisplayName:"
+
ni.getDisplayName());
System.out.println("Name:"
+
ni.getName());
Enumeration<InetAddress>
ips
=
ni.getInetAddresses();
while
(ips.hasMoreElements())
{
System.out.println("IP:"
+
ips.nextElement().getHostAddress());
ipTemp=
ni.getInetAddresses().nextElement().getHostAddress();
if(ipTemp!="127.0.0.1"
&&
!"127.0.0.1".equals(ipTemp))
{
ip=ipTemp;
}
}
}
}catch(Exception
ee)
{
ee.printStackTrace();
}
第二种：也是本机的：
InetAddress
addr
=
InetAddress.getLocalHost();
ip=addr.getHostAddress().toString();//获得本机IP

‘捌’ 《java》中如何提取本地IP

《java》中提取本地IP的方法如下：

private static void () {

try {

Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();

NetworkInterface net;

InetAddress inetAddress;

while (nets.hasMoreElements()) {

net = nets.nextElement();

Enumeration<InetAddress> address = net.getInetAddresses();

while (address.hasMoreElements()) {

inetAddress = address.nextElement();

if (inetAddress!=null&&inetAddress instanceof Inet4Address)

System.out.println(inetAddress.getHostAddress());

}

}

} catch (SocketException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}