nginx代理后获取请求的真实ip

nginx.conf:
server {
listen 80;
server_name _;
location / {
…
proxy_pass http://127.0.0.1:8000/;
# $host 变量，Host 为变量名
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    }
}

java工具类方法:
/**
* 获取真实ip地址 通过Nginx代理的也能获取到真实ip
* @param request
* @return
/
public static String getRealIp(HttpServletRequest request) {
String ip = request.getHeader(“x-forwarded-for”);
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.getRemoteAddr();
if(ip.equals(“127.0.0.1”) || ip.equals(“0:0:0:0:0:0:0:1”)){
//根据网卡取本机配置的IP
InetAddress inet=null;
try {
inet = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
e.printStackTrace();
}
ip= inet.getHostAddress();
}
}
//对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照’,'分割
if(ip!=null && ip.length()>15){ //"**.***.***.***".length() = 15
if(ip.indexOf(",")>0){
ip = ip.substring(0,ip.indexOf(","));
}
}
return ip;
}