HttpServletRequest获取请求ip

最新推荐文章于 2024-01-04 14:49:58 发布

Wing_gor

最新推荐文章于 2024-01-04 14:49:58 发布

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CC 4.0 BY-SA版权

文章标签： HttpServletRequest

本文链接：https://blog.youkuaiyun.com/qq_40085888/article/details/89241546

本文介绍了一种在Java Web应用中获取客户端真实IP地址的方法，即使在使用了代理服务器的情况下也能准确获取。通过检查不同的HTTP头部信息，如'x-forwarded-for'、'Proxy-Client-IP'和'WL-Proxy-Client-IP'，最后回退到使用'remoteAddr'属性，确保了在各种环境下都能得到正确的IP地址。

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/**
	 * 获取当前请求的IP,对使用代理后都有效
	 * @return
	 */
	public static String getRequestIP(){
		ServletRequestAttributes requestAttributes =
				(ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
		HttpServletRequest request=requestAttributes.getRequest();
		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;
	}