Java 获取客户端IP地址工具类

import javax.servlet.http.HttpServletRequest;
public class QueryIpAddress {
  public static String getRemoteIp(HttpServletRequest request) {
    String ip = request.getHeader("x-forwarded-for");
    if(StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
      ip = request.getHeader("Proxy-Client-IP");
    }
    if(StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
      ip = request.getHeader("WL-Proxy-Client-IP");
    }
    if(StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
      ip = request.getRemoteAddr();
    }
    return ip;
  }
}