content: package com.yuu.ymall.web.api.common.utils;
  
  import javax.servlet.http.HttpServletRequest;
  import java.net.InetAddress;
  import java.net.UnknownHostException;
  
  /**
   * IP 信息工具类
   *
   * @Classname IPInfoUtil
   * @Date 2019/5/13 14:09
   * @Created by Yuu
   */
  public class IPInfoUtil {
  
      /**
       * 获取客户端 IP 地址
       *
       * @param request 请求
       * @return
       */
      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();
              if (ip.equals("127.0.0.1")) {
                  //根据网卡取本机配置的IP
                  InetAddress inet = null;
                  try {
                      inet = InetAddress.getLocalHost();
                  } catch (UnknownHostException e) {
                      e.printStackTrace();
                  }
                  ip = inet.getHostAddress();
              }
          }
          // 对于通过多个代理的情况下，第一个 IP 为客户端真实 IP ，多个 IP 按照‘，’分割
          if (ip != null && ip.length() > 15) {
              if (ip.indexOf(",") > 0) {
                  ip = ip.substring(0, ip.indexOf(","));
              }
          }
          if("0:0:0:0:0:0:0:1".equals(ip)){
              ip="127.0.0.1";
          }
          return ip;
      }
  
  }
  