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2023-04-13 43393f2bb11cbf9e6af40077bbc5284660e8a754

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package com.common.security.utils;
 
import lombok.extern.slf4j.Slf4j;
import javax.servlet.http.HttpServletRequest;
 
 
/**
 * @author 廖振钦
 * @date 2022-01-14
 */
@Slf4j
public class IpUtil {
 
    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("X-Real-IP");
        }
 
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("http_client_ip");
        }
 
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
 
        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.getHeader("HTTP_X_FORWARDED_FOR");
        }
 
        if (ip != null && ip.indexOf(",") != -1) {
            ip = ip.substring(ip.lastIndexOf(",") + 1, ip.length()).trim();
        }
 
        return ip;
    }
}