Not able to run spring web socket demo

I was facing the same problem. This thread gave me enough clues to solve the problem. Thanks a lot.

SOLUTION:In case you have a Spring MVC Dispatcher Servlet configured in your web.xml and mapped to a url-pattern as shown below

<servlet-mapping>    <servlet-name>dispatcher</servlet-name>    <url-pattern>/webui/*</url-pattern></servlet-mapping>

Then you have to create the SockJS instance as shown below

var socket = new SockJS('/contextPath/webui/hello');

NOTE: Replace contextPath with your application context path.

This Chrome extension can help you test Websockets.

Also you can have a look at my simple-chat project that uses Spring Boot with Websockets.

Try adding an assets folder inside webapp, where all the stomp and sockjs.js files are made available. Have a look at this example of a running application, that can be run with mvn clean install jetty:run.

The problem seems to be that either the sockjs is not on the server or some path is wrong. Based on the example on the link, a stomp endpoint can be configured like this:

@EnableWebSocketMessageBrokerpublic class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {    @Override    public void registerStompEndpoints(StompEndpointRegistry registry) {        registry.addEndpoint("/portfolio").withSockJS();    }}

Then in javascript the end point can be called like this:

 var socket = new SockJS('/spring-websocket-portfolio/portfolio') var stompClient = Stomp.over(socket);

where /spring-websocket-portfolio is the root deployment path of your application.