import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;/*** 请求工具类* Created by macro on 2020/10/8.*/
public class RequestUtil {/*** 获取请求真实IP地址*/public static String getRequestIp(HttpServletRequest request) {//通过HTTP代理服务器转发时添加String ipAddress = request.getHeader("x-forwarded-for");if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {ipAddress = request.getHeader("Proxy-Client-IP");}if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {ipAddress = request.getHeader("WL-Proxy-Client-IP");}if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {ipAddress = request.getRemoteAddr();// 从本地访问时根据网卡取本机配置的IPif (ipAddress.equals("127.0.0.1") || ipAddress.equals("0:0:0:0:0:0:0:1")) {InetAddress inetAddress = null;try {inetAddress = InetAddress.getLocalHost();} catch (UnknownHostException e) {e.printStackTrace();}ipAddress = inetAddress.getHostAddress();}}// 通过多个代理转发的情况，第一个IP为客户端真实IP，多个IP会按照','分割if (ipAddress != null && ipAddress.length() > 15) {if (ipAddress.indexOf(",") > 0) {ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));}}return ipAddress;}}