Java工具类-获取请求ip/浏览器/操作系统/浏览器版本

<!-- hutool工具类 -->
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.7.3</version>
</dependency>

import cn.hutool.http.useragent.UserAgent;
import cn.hutool.http.useragent.UserAgentUtil;

import javax.servlet.http.HttpServletRequest;

/**
 * 工具类 - ip/浏览器/操作系统/浏览器版本
 *
 * @author Neoooo
 * @date 2022/4/14
 */
public class HttpUtils {

    private HttpUtils() {}

    /**
     * 请求url
     *
     * @return {@link String}
     */
    public static String getRequestUrl() {
        return RequestContextHolderUtils.getRequest().getRequestURI();
    }

    /**
     * 获取浏览器名字
     *
     * @param request 请求
     * @return {@link String}
     */
    public static String getBrowserName(HttpServletRequest request) {
        String uaStr = request.getHeader("User-Agent");
        UserAgent ua = UserAgentUtil.parse(uaStr);
        return ua.getBrowser().toString();
    }

    /**
     * 获取浏览器版本
     *
     * @param request 请求
     * @return {@link String}
     */
    public static String getBrowserVersion(HttpServletRequest request) {
        String uaStr = request.getHeader("User-Agent");
        UserAgent ua = UserAgentUtil.parse(uaStr);
        return ua.getVersion();
    }

    /**
     * 获取操作系统名称
     *
     * @param request 请求
     * @return {@link String}
     */
    public static String getOsName(HttpServletRequest request) {
        String uaStr = request.getHeader("User-Agent");
        UserAgent ua = UserAgentUtil.parse(uaStr);
        return ua.getOs().toString();
    }

    /**
     * 得到ip地址
     *
     * @param request 请求
     * @return {@link String}
     */
    public static String getIpAddr(HttpServletRequest request) {
        if (request == null) {
            return "unknown";
        } else {
            String 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("X-Forwarded-For");
            }

            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.getHeader("X-Real-IP");
            }

            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
                ip = request.getRemoteAddr();
            }

            if ("0:0:0:0:0:0:0:1".equals(ip)) {
                ip = "127.0.0.1";
            }

            if (ip.contains(",")) {
                ip = ip.split(",")[0];
            }
            return ip;
        }
    }