Java里面获取当前服务器(linux环境)的IP地址-与请求者的真实IP

以德报德 發表於 2019-7-17 14:22:00

Java里面获取当前服务器(linux环境)的IP地址--与请求者的真实IP

<div class="cnblogs_code">
<pre>1 package com.wfd360.Util;
2
3 import javax.servlet.http.HttpServletRequest;
4 import java.net.Inet4Address;
5 import java.net.InetAddress;
6 import java.net.NetworkInterface;
7 import java.net.SocketException;
8 import java.util.Enumeration;
9 import java.util.HashMap;
 10 import java.util.Map;
 11
 12 /**
 13 * @Copyright (C)
 14 * @Author: 姿势帝
 15 * @Date: 6/3 16:37
 16 * @Description:
 17*/
 18 public class HostUtil {
 19 private static String ipstr = "127.0.0.1";
 20 private static Map<String, String> map = new HashMap();
 21
 22 static {
 23 map.put("ip", getLinuxLocalIp());
 24 }
 25
 26 public static String getHostIp() {
 27 String ip = map.get("ip");
 28 if (ip == null) {
 29 String ip1 = getLinuxLocalIp();
 30 map.put("ip", ip1);
 31 return ip1;
 32 }
 33 return ip;
 34 }
 35
 36
 37 /**
 38 * 获取Linux下的IP地址
 39 *
 40 * @return IP地址
 41 * @throws SocketException
 42 */
 43 private static String getLinuxLocalIp() {
 44 String ip = "";
 45 try {
 46 for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
 47 NetworkInterface intf = en.nextElement();
 48 String name = intf.getName();
 49 if (!name.contains("docker") && !name.contains("lo")) {
 50 for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
 51 InetAddress inetAddress = enumIpAddr.nextElement();
 52 if (!inetAddress.isLoopbackAddress()) {
 53 String ipaddress = inetAddress.getHostAddress().toString();
 54 if (!ipaddress.contains("::") && !ipaddress.contains("0:0:") && !ipaddress.contains("fe80")) {
 55 ip = ipaddress;
 56 }
 57 }
 58 }
 59 }
 60 }
 61 } catch (SocketException ex) {
 62 ip = "127.0.0.1";
 63 ex.printStackTrace();
 64 }
 65 return ip;
 66 }
 67
 68 /**
 69 * 获取请求者的ip地址
 70 *
 71 * @param request
 72 * @return
 73 */
 74 public static String getIpAdrress(HttpServletRequest request) {
 75 String ip = null;
 76
 77 //X-Forwarded-For：Squid 服务代理
 78 String ipAddresses = request.getHeader("X-Forwarded-For");
 79 String unknown = "unknown";
 80 if (ipAddresses == null || ipAddresses.length() == 0 || unknown.equalsIgnoreCase(ipAddresses)) {
 81 //Proxy-Client-IP：apache 服务代理
 82 ipAddresses = request.getHeader("Proxy-Client-IP");
 83 }
 84
 85 if (ipAddresses == null || ipAddresses.length() == 0 || unknown.equalsIgnoreCase(ipAddresses)) {
 86 //WL-Proxy-Client-IP：weblogic 服务代理
 87 ipAddresses = request.getHeader("WL-Proxy-Client-IP");
 88 }
 89
 90 if (ipAddresses == null || ipAddresses.length() == 0 || unknown.equalsIgnoreCase(ipAddresses)) {
 91 //HTTP_CLIENT_IP：有些代理服务器
 92 ipAddresses = request.getHeader("HTTP_CLIENT_IP");
 93 }
 94
 95 if (ipAddresses == null || ipAddresses.length() == 0 || unknown.equalsIgnoreCase(ipAddresses)) {
 96 //X-Real-IP：nginx服务代理
 97 ipAddresses = request.getHeader("X-Real-IP");
 98 }
 99
100 //有些网络通过多层代理，那么获取到的ip就会有多个，一般都是通过逗号（,）分割开来，并且第一个ip为客户端的真实IP
101 if (ipAddresses != null && ipAddresses.length() != 0) {
102 ip = ipAddresses.split(",");
103 }
104
105 //还是不能获取到，最后再通过request.getRemoteAddr();获取
106 if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ipAddresses)) {
107 ip = request.getRemoteAddr();
108 }
109 return ip;
110 }
111
112
113 }</pre>
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来源：https://www.cnblogs.com/newAndHui/p/11200775.html

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Java里面获取当前服务器(linux环境)的IP地址--与请求者的真实IP