nginx如何获取真实的ip

我这里使用是springboot项目，使用nginx做代理，但header里面的参数没有将ip带过来，所有需要配置nginx将ip带过来。

nginx.conf文件

server {listen       80;listen       443 ssl;server_name  xxx.xxx.com;ssl_certificate  /web/project/ai-master/ssl/xxx.xxx.com_bundle.pem;ssl_certificate_key  /web/project/ai-master/ssl/xxx.xxx.com.top.key;#接口location /api {#保留代理之前的host 包含客户端真实的域名和端口号proxy_set_header    Host  $host;#保留代理之前的真实客户端ipproxy_set_header    X-Real-IP  $remote_addr;#这个Header和X-Real-IP类似，但它在多级代理时会包含真实客户端及中间每个代理服务器的IPproxy_set_header    X-Forwarded-For  $proxy_add_x_forwarded_for;#表示客户端真实的协议(http还是https)proxy_set_header X-Forwarded-Proto $scheme;proxy_pass http://aiMasterServer/api;}}

RequestUtil.java文件

/*** @Description:请求处理类* @author: Adobe Chow* @date: 2019/4/25 10:42* @Copyright: www.winshang.com Inc. All rights reserved.*/
public class RequestUtil {public static HttpServletRequest getRequest(){HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();return request;}public static HttpServletResponse getResponse(){HttpServletResponse response = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getResponse();return response;}/**** 获取客户端IP地址;这里通过了Nginx获取;X-Real-IP,* @return*/public static String getClientIP() {HttpServletRequest request = getRequest();String ip = request.getHeader("X-Real-IP");if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {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();}return ip;}
}