Detailed explanation of spring websocket in Java

First POM xml

The processing class GameHandler after receiving the message:

Handshake information interceptor websockethandshakeinterceptor:

Use the websocketconfig configuration class of websocket:

Launch class launcher:

Configuration file main / resources / application properties:

The front-end test page is main \ resources \ static \ index html

Now you can use websocket for front-end and back-end communication. If you still don't understand or have better methods, you can discuss them in the message area below.