com.dxy.library.util.common.IpUtils Maven / Gradle / Ivy

Go to download
package com.dxy.library.util.common;

import javax.servlet.http.HttpServletRequest;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;

/**
 * IP工具类
 * @author duanxinyuan
 * 2017/9/6 16:55
 */
public class IpUtils {
    private static String localIp;

    /**
     * 从请求头中获取用户IP
     */
    public static String getIp(HttpServletRequest request) {
        String ip = request.getParameter("ip");
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("X-Forwarded-For");
        }
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("X-Real-IP");
        }
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
        }
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        if (!StringUtils.isEmpty(ip) && ip.contains(",")) {
            //阿里云服务器会在ip后面附加一个负载均衡的ip
            String[] split = ip.split(",");
            ip = split[0];
        }
        return ip;
    }


    /**
     * 获取本机的网络IP
     */
    public static String getLocalNetWorkIp() {
        if (localIp != null) {
            return localIp;
        }
        try {
            Enumeration netInterfaces = NetworkInterface.getNetworkInterfaces();
            InetAddress ip = null;
            while (netInterfaces.hasMoreElements()) {// 遍历所有的网卡
                NetworkInterface ni = netInterfaces.nextElement();
                if (ni.isLoopback() || ni.isVirtual()) {// 如果是回环和虚拟网络地址的话继续
                    continue;
                }
                Enumeration addresss = ni.getInetAddresses();
                while (addresss.hasMoreElements()) {
                    InetAddress address = addresss.nextElement();
                    if (address instanceof Inet4Address) {// 这里暂时只获取ipv4地址
                        ip = address;
                        break;
                    }
                }
                if (ip != null) {
                    break;
                }
            }
            if (ip != null) {
                localIp = ip.getHostAddress();
            } else {
                localIp = "127.0.0.1";
            }
        } catch (Exception e) {
            localIp = "127.0.0.1";
        }
        return localIp;
    }


}