jMonkeyEngine-SoftwareStore/www/js/websocket.js

$(document).ready(function() {
	connect();
});

var stompClient = null;

function setConnected(connected) {
	$("#connect").prop("disabled", connected);
	$("#disconnect").prop("disabled", !connected);
	if (connected) {
		$("#conversation").show();
	} else {
		$("#conversation").hide();
	}
	$("#greetings").html("");
}

function connect() {
	let socket = new SockJS("/gs-guide-websocket");
	stompClient = Stomp.over(socket);
	stompClient.debug = null;
	stompClient.connect({}, function(frame) {
		setConnected(true);
		//console.log("Connected: " + frame);
		stompClient.subscribe("/topic/greetings", function(greeting) {
			showGreeting(JSON.parse(greeting.body).content);
		});
	});
}

function disconnect() {
	if (stompClient !== null) {
		stompClient.disconnect();
	}
	setConnected(false);
	//console.log("Disconnected");
}

function sendName() {
	stompClient.send("/app/hello", {}, JSON.stringify({ name: $("#name").val() }));
}

function showGreeting(message) {
	$("#greetings").append("<tr><td>" + message + "</td></tr>");
}

$(function() {
	$("form").on("submit", function(e) {
		e.preventDefault();
	});
	$("#connect").click(function() {
		connect();
	});
	$("#disconnect").click(function() {
		disconnect();
	});
	$("#send").click(function() {
		sendName();
	});
});