com.github.yizzuide.milkomeda.util.NetworkUtil Maven / Gradle / Ivy

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/*
 * Copyright (c) 2021 yizzuide All rights Reserved.
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.github.yizzuide.milkomeda.util;

import lombok.extern.slf4j.Slf4j;

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

/**
 * NetworkUtil
 *
 * @author yizzuide
 * @since 0.2.0
 * @version 3.12.10
 * 

 * Create at 2019/04/11 20:13
 */
@Slf4j
public class NetworkUtil {
    /**
     * 获取服务器IP地址
     *
     * @return 服务器IP地址
     */
    public static String getHost() {
        try {
            Enumeration allNetInterfaces = NetworkInterface.getNetworkInterfaces();
            InetAddress ip;
            while (allNetInterfaces.hasMoreElements()) {
                NetworkInterface netInterface = allNetInterfaces.nextElement();
                if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
                    continue;
                }
                Enumeration addresses = netInterface.getInetAddresses();
                while (addresses.hasMoreElements()) {
                    ip = addresses.nextElement();
                    if (ip instanceof Inet4Address) {
                        return ip.getHostAddress();
                    }
                }
            }
        } catch (Exception e) {
            log.error("Get host IP error with msg: {}", e.getMessage(), e);
        }
        return "";
    }

    /**
     * 获得请求端IP
     * @param request   HttpServletRequest
     * @return  请求端IP
     */
    public static String getRemoteAddr(HttpServletRequest request) {
        String ip = request.getHeader("X-Real-IP");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            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();
        }
        // 处理多IP的情况（只取第一个IP）
        if (ip != null && ip.contains(",")) {
            String[] ipArray = ip.split(",");
            ip = ipArray[0];
        }
        return ip;
    }
}