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IPUtil.java
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package top.whgojp.common.utils;
import cn.hutool.core.util.StrUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.http.HttpServletRequest;
/**
* IP地址
*
* @author whgojp
* @email whgojp@foxmail.com
* @date 2024年3月8日 下午12:57:02
*/
public class IPUtil {
private static Logger logger = LoggerFactory.getLogger(IPUtil.class);
/**
* 获取IP地址
*
* 使用Nginx等反向代理软件， 则不能通过request.getRemoteAddr()获取IP地址
* 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，X-Forwarded-For中第一个非unknown的有效IP字符串，则为真实IP地址
*/
public static String getIpAddr(HttpServletRequest request) {
String ip = null;
try {
ip = request.getHeader("x-forwarded-for");
if (StrUtil.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (StrUtil.isEmpty(ip) || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (StrUtil.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_CLIENT_IP");
}
if (StrUtil.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (StrUtil.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
} catch (Exception e) {
logger.error("IPUtils ERROR ", e);
}
// //使用代理，则获取第一个IP地址
// if(StringUtils.isEmpty(ip) && ip.length() > 15) {
// if(ip.indexOf(",") > 0) {
// ip = ip.substring(0, ip.indexOf(","));
// }
// }
return ip;
}
}