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

有什么办法可以让我得到客户端访问服务器的原始 IP 地址?我可以使用request.getRemoteAddr()，但我似乎总是获取代理或网络服务器的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.

我想知道客户端用于连接到我的 IP 地址.反正我能拿到吗?

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

试试这个:

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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