无法运行spring web socket演示

I am trying to run a demo of spring web socket but not able to test it completely. I am using java 7 and tomcat 7.0.50. I don't get any error while server startup, but when I open the web page with js making the connection to it I got 404 page not found. I am not sure if I am missing anything in configuration to make it run and how can I be able to connect it from js side.I am trying to run a demo of spring web socket