IP地址工具类

import lombok.extern.slf4j.Slf4j;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @描述 ip工具
 * @创建人 
 * @创建时间 2021/10/15
 * @修改人和其它信息
 */
@Slf4j
public class IpUtils {

    private static final String localhost = "127.0.0.1";

    /**
     * 功能描述: <br>
     * 〈获取请求客户端ip〉
     */
    public static String getIpAddr(HttpServletRequest request) {
        String ipAddress = null;
        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();
            if (localhost.equals(ipAddress)) {
                InetAddress inet = null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (UnknownHostException e) {
                    log.error(ErrorCode.ERROR_0009.getFullCode(), ErrorCode.ERROR_0009.getMsg(), e);
                }
                if (inet != null) {
                    ipAddress = inet.getHostAddress();
                }
            }
        }
        return ipAddress;
    }
}