java获得请求IP

	    public static String getRemoteIp(HttpServletRequest request) {

        String remoteAddr = request.getRemoteAddr();
        String remoteIp = request.getHeader("X-Forwarded-For");
        if (isBlank(remoteIp) || LOCAL_HOST_IP.equals(remoteIp)) {
            remoteIp = request.getHeader("X-Real-IP");
        }
        if (isBlank(remoteIp) || LOCAL_HOST_IP.equals(remoteIp)) {
            remoteIp = request.getHeader("Proxy-Client-IP");
        }
        if (isBlank(remoteIp) || LOCAL_HOST_IP.equals(remoteIp)) {
            remoteIp = request.getHeader("WL-Proxy-Client-IP");
        }
        String ip = remoteIp != null ? remoteIp : remoteAddr;

        int pos = ip.indexOf(',');
        if (pos >= 0) {
            ip = ip.substring(0, pos);
        }

        return ip;
    }
	```