nginx反向代理后tomcat获取客户端的真实ip

最新推荐文章于 2023-04-11 11:49:18 发布

wangbingqi

最新推荐文章于 2023-04-11 11:49:18 发布

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分类专栏： nginx 文章标签： nginx

本文链接：https://blog.youkuaiyun.com/wangbingqi/article/details/90034366

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本文介绍如何配置Nginx的nginx.conf文件实现反向代理，并详细解释了Java后台如何通过HttpServletRequest对象获取客户端的真实IP地址，适用于多层代理环境。

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（1）nginx的nginx.conf文件修改

 server {
        listen       80;
        server_name  localhost;
	 
		location / {
			proxy_redirect off;
            proxy_pass http://192.168.0.152:6300/;
           
            proxy_set_header   X-real-ip $remote_addr;
            proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
         }
}

（2）java后台获取客户端真实ip

/** 
     * 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址; 
     * @param request 
     * @return 
     * @throws IOException 
     */  
    public final static String getIpAddr(HttpServletRequest request)  {  
        // 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址  
        String ip = request.getHeader("X-Forwarded-For");  
      
  
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
            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();  
                  
            }  
        } else if (ip.length() > 15) {  
            String[] ips = ip.split(",");  
            for (int index = 0; index < ips.length; index++) {  
                String strIp = (String) ips[index];  
                if (!("unknown".equalsIgnoreCase(strIp))) {  
                    ip = strIp;  
                    break;  
                }  
            }  
        }  
        return ip;  
    }