java服务端获取Nginx代理前的真实IP地址

Nginx中的配置

Nginx中加入以下配置

// nginx中加入以下配置
proxy_set_header x-forwarded-for  $remote_addr;

项目中获取IP方法

// 获取客户端ip
public static String getClientIp(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();
	}
	if (ip == null || ip.length() == 0 || ip.indexOf(":") > -1) {
		try {
			ip = InetAddress.getLocalHost().getHostAddress();
		} catch (UnknownHostException e) {
			ip = null;
		}
	}
	return ip;
};

登录方法中调用获取IP方法获得实际IP地址