java 获取服务器真实IP的实例-eolink官网

java 获取服务器真实IP的实例

前言：

根据操作系统的不同,获取的结果不同,故需要区分系统,分别获取

实现代码：

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.PrintWriter;

import java.io.UnsupportedEncodingException;

import java.net.HttpURLConnection;

import java.net.Inet4Address;

import java.net.InetAddress;

import java.net.InterfaceAddress;

import java.net.NetworkInterface;

import java.net.SocketException;

import java.net.URL;

import java.net.URLConnection;

import java.net.URLEncoder;

import java.net.UnknownHostException;

import java.util.ArrayList;

import java.util.Enumeration;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.http.HttpEntity;

import org.apache.http.NameValuePair;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.HttpClient;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

import org.springframework.http.HttpMethod;

/**

* 常用工具类

* @author 席红蕾

* @date 2016-09-27

* @version 1.0

public class WebToolUtils {

/**

* 获取本地IP地址

* @throws SocketException

public static String getLocalIP() throws UnknownHostException, SocketException {

if (isWindowsOS()) {

return InetAddress.getLocalHost().getHostAddress();

} else {

return getlinuxLocalIp();

}

/**

* 判断操作系统是否是Windows

* @return

public static boolean isWindowsOS() {

boolean isWindowsOS = false;

String osName = System.getProperty("os.name");

if (osName.toLowerCase().indexOf("windows") > -1) {

isWindowsOS = true;

}

return isWindowsOS;

}

/**

* 获取本地Host名称

public static String getLocalHostName() throws UnknownHostException {

return InetAddress.getLocalHost().getHostName();

}

/**

* 获取Linux下的IP地址

* @return IP地址

* @throws SocketException

private static String getLinuxLocalIp() throws SocketException {

String ip = "";

try {

for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {

NetworkInterface intf = en.nextElement();

String name = intf.getName();

if (!name.contains("docker") && !name.contains("lo")) {

for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {

InetAddress inetAddress = enumIpAddr.nextElement();

if (!inetAddress.isLoopbackAddress()) {

String ipaddress = inetAddress.getHostAddress().toString();

if (!ipaddress.contains("::") && !ipaddress.contains("0:0:") && !ipaddress.contains("fe80")) {

ip = ipaddress;

System.out.println(ipaddress);

}

} catch (SocketException ex) {

System.out.println("获取ip地址异常");

ip = "127.0.0.1";

ex.printStackTrace();

}

System.out.println("IP:"+ip);

return ip;

}

/**

* 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址,

* 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？

* 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。

* 如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130,

* 192.168.1.100

* 用户真实IP为： 192.168.1.110

* @param request

* @return

public static String getIpAddress(HttpServletRequest request) {

String ip = request.getHeader("x-forwarded-for");