doFilter websocket会话和消息

Question

如何从Session的{​​{1}}获取WebSocket String和request？另外，如果请求是WebSocket请求，如何确定请求是Filter，Open还是Message请求？

假设：

Close

@Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException { //Session session = request.getWebSocketSession(); ?? //String string = request.getWebSocketMessage().toString(); ?? }

将上述日志记录置于Logger.getLogger(Example.class.getName()).log(Level.INFO, "New request to {0}", (HttpServletRequest) request.getRequestURL().toString());内会在新的websocket doFilter请求时产生以下结果：

open

即使我的Javascript设置为：

New request to http://localhost:8080/example

查看API后，似乎有new WebSocket("ws://localhost:8090/example");，但我看不到有关WsFilter或Session

的任何信息