Apache - Tomcat 7 WebSocket do not start up - spring

Question

My tomcat version is 7.0.107 with Apache 2.4.
I'm using Spring 4, Java 7 SDK
The issue that I cannot resolve is so complicated.
Once I setting up and start my project over https(ssl),
my application SocketHandler do not working at all.
public class SocketHandler extends TextWebSocketHandler implements InitializingBean {
private Set<WebSocketSession> sessionSet = new HashSet<WebSocketSession>();
public SocketHandler() {
super();
System.out.println("create SocketHandler instance!");
}
#Override
public void afterConnectionClosed(WebSocketSession session, CloseStatus status) {
try {
super.afterConnectionClosed(session, status);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sessionSet.remove(session);
System.out.println("remove session!");
}
#Override
public void afterConnectionEstablished(WebSocketSession session) {
try {
super.afterConnectionEstablished(session);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sessionSet.add(session);
System.out.println("add session!");
}
#Override
public void handleMessage(WebSocketSession session, WebSocketMessage<?> message) {
try {
super.handleMessage(session, message);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("receive message:" + message.toString());
}
#Override
public void handleTransportError(WebSocketSession session, Throwable exception) {
System.out.println("web socket error!"+ exception);
}
#Override
public boolean supportsPartialMessages() {
System.out.println("call method!");
return super.supportsPartialMessages();
}
public void sendMessage(String message) {
for (WebSocketSession session : this.sessionSet) {
if (session.isOpen()) {
try {
session.sendMessage(new TextMessage(message));
} catch (Exception ignored) {
System.out.println("fail to send message!" + ignored);
}
}
}
}
#Override
public void afterPropertiesSet() throws Exception {
Thread thread = new Thread() {
int i = 0;
#Override
public void run() {
while (true) {
try {
sendMessage("send message index " + i++);
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
break;
}
}
}
};
thread.start();
}
}
my serlvet.xml file
<websocket:handlers>
<websocket:mapping path="/socket/echo" handler="echoHandler"/>
<websocket:handshake-interceptors>
<bean class="org.springframework.web.socket.server.support.HttpSessionHandshakeInterceptor"/>
</websocket:handshake-interceptors>
</websocket:handlers>
<bean id="echoHandler" class="studyroom.util.SocketHandler" />
AS you can see, echoHandler(SocketHandler) is not starting up,
when I access my wss action :(
How can I start up my SocketHandler?
My client Script File is like below :
var wsUri = "wss://example.com/socket/echo";
var websocket;
function init() {
output = document.getElementById("output");
}
function send_message() {
websocket = new WebSocket(wsUri);
websocket.onopen = function(evt) {
onOpen(evt);
};
websocket.onmessage = function(evt) {
onMessage(evt);
};
websocket.onerror = function(evt) {
onError(evt);
};
}
function onOpen(evt) {
writeToScreen("Connected to Endpoint!");
doSend(textID.value);
}
function onMessage(evt) {
alert(evt.data);
writeToScreen("Message Received: " + evt.data);
}
function onError(evt) {
writeToScreen('ERROR: ' + evt.data);
}
function doSend(message) {
writeToScreen("Message Sent: " + message);
websocket.send(message);
websocket.close();
}
function writeToScreen(message) {
var pre = document.createElement("p");
pre.style.wordWrap = "break-word";
pre.innerHTML = message;
output.appendChild(pre);
}
window.addEventListener("load", init, false);
HTML FILE :
<div style="text-align: center;">
<form action="">
<input onclick="send_message()" value="Send" type="button">
<input id="textID" name="message" value="Hello WebSocket!" type="text"><br>
</form>
</div>
<div id="output"></div>