package cn.besteam.common.util;
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import com.alibaba.druid.util.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import javax.servlet.http.HttpServletRequest;
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/**
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* IP地址
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*
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* @author scott
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* @email jeecgos@163.com
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* @date 2019年01月14日
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*/
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public class IPUtils {
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private static Logger logger = LoggerFactory.getLogger(IPUtils.class);
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/**
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* 获取IP地址
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* <p>
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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，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 = null;
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try {
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ip = request.getHeader("x-forwarded-for");
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if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("Proxy-Client-IP");
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}
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if (StringUtils.isEmpty(ip) || 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 (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("HTTP_CLIENT_IP");
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}
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if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getHeader("HTTP_X_FORWARDED_FOR");
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}
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if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
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ip = request.getRemoteAddr();
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}
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} catch (Exception e) {
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logger.error("IPUtils ERROR ", e);
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}
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// //使用代理，则获取第一个IP地址
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ip = org.apache.commons.lang.StringUtils.substringBefore(ip, ",");
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return ip;
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}
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}
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