WebSocketConfig.java

package com.example.boersma.realtimewebchat.configuration;

import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/chatroom").setAllowedOriginPatterns("*").withSockJS();
    }

    public void configureMessageBroker(MessageBrokerRegistry registry) {
        registry.enableSimpleBroker("/chat");
        registry.setApplicationDestinationPrefixes("/api");
    }
}