获得客户端真实IP

最新推荐文章于 2024-07-08 18:16:30 发布

原创最新推荐文章于 2024-07-08 18:16:30 发布 · 117 阅读

0 ·

CC 4.0 BY-SA版权

basic of java 专栏收录该内容

81 篇文章

订阅专栏

本文介绍了一种通过Java代码从HttpServletRequest请求中获取客户端真实IP地址的方法。该方法依次检查请求头中的x-forwarded-for、Proxy-Client-IP、WL-Proxy-Client-IP字段，并在这些字段不存在或为unknown时，采用request.getRemoteAddr()获取IP地址。

	/**
	 * 获得客户端真实IP
	 */
	public String getIpAddr(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; 
	 }