@OnMessage
    public void onMessage(final byte[] message, final Session session) {
        File file = (File) session.getUserProperties().get("file");
        try {
            Map<String, Object> param = new HashMap<>(2);
            param.put("file", file);
            saveFile.saveFileFromBytes(message, param);
            session.getBasicRemote().sendText("ok");
        } catch (Exception e) {
            LOG.error("UpLoadController onMessage", e);
        }
    }
receive message of bytes.
@param message  message bytes
@param session  session
shenyu-examples/shenyu-examples-websocket/shenyu-example-spring-annotation-websocket/src/main/java/org/apache/shenyu/examples/websocket/ws/UploadController.java