java获取ip地址

最新推荐文章于 2025-05-08 09:38:15 发布

转载最新推荐文章于 2025-05-08 09:38:15 发布 · 412 阅读

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本文介绍了一种通过Java代码从HttpServletRequest对象中获取客户端真实IP地址的方法。该方法首先尝试从请求头中读取IP地址，如果请求头中没有相关信息，则直接使用request.getRemoteAddr()方法获取。此方案适用于处理经过代理服务器或负载均衡的情况。

public static String getRemoteAddr(HttpServletRequest request) {
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("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
{
ip = request.getRemoteAddr();
}
return ip;
}

转载：http://blog.youkuaiyun.com/lushuaiyin/article/details/6830698和http://chenjumin.iteye.com/blog/232785