我按照教程在我的JavaSpring应用程序中实现了websockets。到目前为止它工作正常，但我真的很想了解它的用途:config.setApplicationDestinationPrefixes("/app");我的整个配置是这样的@Configuration@EnableWebSocketMessageBrokerpublicclassWebSocketConfigextendsAbstractWebSocketMessageBrokerConfigurer{@OverridepublicvoidconfigureMessageBroker(MessageBrokerRegi