package com.xcong.excoin.common.utils;
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import javax.servlet.http.HttpServletRequest;
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/**
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* @author MrBird
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*/
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public class IpUtil {
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private static final String UNKNOWN = "unknown";
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/**
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* 获取 IP地址
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* 使用 Nginx等反向代理软件， 则不能通过 request.getRemoteAddr()获取 IP地址
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* 如果使用了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP地址，
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* X-Forwarded-For中第一个非 unknown的有效IP字符串，则为真实IP地址
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*/
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public static String getIpAddr(HttpServletRequest request) {
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String ip = request.getHeader("x-forwarded-for");
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getHeader("Proxy-Client-IP");
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}
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getHeader("WL-Proxy-Client-IP");
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}
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if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
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ip = request.getRemoteAddr();
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}
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return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : ip;
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}
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}
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