需要在vaadin 8.8.5中获取实际Ip地址

import javax.servlet.http.HttpServletRequest;
import com.vaadin.server.VaadinServletRequest;
import java.net.InetAddress;

public class MyUI extends UI {

    @Override
    protected void init(VaadinRequest request) {
        // 获取VaadinServletRequest对象
        VaadinServletRequest vaadinRequest = (VaadinServletRequest) request;

        // 获取实际IP地址
        String ipAddress = vaadinRequest.getHeader("X-Forwarded-For");
        if (ipAddress == null || ipAddress.isEmpty() || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = vaadinRequest.getHeader("Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.isEmpty() || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = vaadinRequest.getHeader("WL-Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.isEmpty() || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = vaadinRequest.getHeader("HTTP_CLIENT_IP");
        }
        if (ipAddress == null || ipAddress.isEmpty() || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = vaadinRequest.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ipAddress == null || ipAddress.isEmpty() || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = vaadinRequest.getRemoteAddr();
        }

        // 解析IP地址
        try {
            InetAddress inetAddress = InetAddress.getByName(ipAddress);
            String actualIp = inetAddress.getHostAddress();
            // 输出实际IP地址
            System.out.println("实际IP地址：" + actualIp);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}