java获取用户客户端IP地址工具类复制即用

最新推荐文章于 2025-12-02 15:55:42 发布

原创最新推荐文章于 2025-12-02 15:55:42 发布 · 251 阅读

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CC 4.0 BY-SA版权

文章标签：

#java #tcp/ip #servlet

这是一个Java方法，用于从HttpServletRequest中获取客户端的IP地址，考虑了代理服务器的情况，检查了多个可能包含IP的头部字段，如x-forwarded-for，Proxy-Client-IP，WL-Proxy-Client-IP，X-Real-IP，如果所有这些都不存在，则返回 emoteAddr的值。

import javax.servlet.http.HttpServletRequest;

/**
 * 获取IP方法
 * 
 * @author ruoyi
 */
public class IpUtils
{
    public static String getIpAddr(HttpServletRequest request)
    {
        if (request == null)
        {
            return "unknown";
        }
        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();
        }
        return ip;
    }
}