打开连接后如何从javax websocket服务器获取消息

Question

I had been wrote a simple javax websocket app. I'm trying to send data from @OnOpen method via session to client like this

@OnOpen
public void onOpen(Session session) throws IOException {

    session.getBasicRemote().sendText("Client connected");

}

then I'm trying to recieve it, but got undefined on client

        ws.onopen = function(event) {
            document.getElementById('messages').innerHTML = event.message;
        };

or

        ws.onopen = function(event) {
            document.getElementById('messages').innerHTML = event.data;
        };

Could we get it?!

add: also a same thing with @OnError

Answer 1

Based on the JSR 356 , if you read the OnOpen part, there are parameters like session, configs and path params but there is nothing you get for a message from the client. So maybe you can use path params to get the data?