RealIpUtils.java
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package org.nafmii.common.utils;
import javax.servlet.http.HttpServletRequest;
/**
* @author lvyp
* @date 2021/5/24
*/
public class RealIpUtils {
/**
* 获取真实访问IP
* @param request request
* @return String
*/
public static String getIpAddress(HttpServletRequest request){
String ip;
try {
String unknown = "unknown";
String milt = ",";
ip = request.getHeader("X-Forwarded-For");
if (ip != null && ip.length() != 0 && !unknown.equalsIgnoreCase(ip)) {
// 多次反向代理后会有多个ip值，第一个ip才是真实ip
if(ip.contains(milt)){
ip = ip.split(milt)[0];
}
}
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_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_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.getRemoteAddr();
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
return ip;
}
}