如何在servlet中获取客户端的远程地址? [英] How do I get the remote address of a client in servlet?

问题描述

有什么办法可以获取到服务器的客户端的原始IP地址? 我可以使用request.getRemoteAddr()，但我似乎总是能获得代理服务器或Web服务器的IP.

Is there any way that I could get the original IP address of the client coming to the server? I can use request.getRemoteAddr(), but I always seem to get the IP of the proxy or the web server.

我想知道客户端用来连接我的IP地址.无论如何，我能得到它吗?

I would want to know the IP address that the client is using to connect to me. Is there anyway that I could get it?

推荐答案

尝试一下:

public static String getClientIpAddr(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.getHeader("HTTP_CLIENT_IP");  
        }  
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");  
        }  
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
            ip = request.getRemoteAddr();  
        }  
        return ip;  
    }  

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