java - Spring websocket connection not being established -

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i followed this tutorial build spring websocket application. i've kept each file i'm neither using maven nor gradle. run index.html file on tomcat server. when click connect get:

opening web socket... http://localhost:8080/hello/info 404 (not found) whoops! lost connection undefined

in chrome's developer window. why happening?

link may help. here have given whole example.

for require stomp.js, sockjs on client side , spring-websocket & spring-messaging 4.2.6.release jar in server side,


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