spring-websocket不通，求助?报错

js：

ws= new WebSocket("ws://localhost:8080/SpringWebSocketPush/myHandler");

<bean id="myHandler" class="com.milanosoft.RCS.web.webSocket.hndler.SystemWebSocketHandler"/>
	<websocket:handlers>
        <websocket:mapping path="/myHandler" handler="myHandler"/>
        <websocket:handshake-interceptors>
            <bean class="com.milanosoft.RCS.web.webSocket.interceptor.HandshakeInterceptor" />
        </websocket:handshake-interceptors>
    </websocket:handlers>

WebSocket connection to 'ws://localhost:8080/SpringWebSocketPush/myHandler' failed: Error during WebSocket handshake: Unexpected response code: 404