Spring WebSocket集成失败：无法通过Postman连接问题求助

我尝试在Spring应用中集成WebSocket，直接复制了Spring官方教程的代码，但无法通过Postman连接WebSocket，而教程提供的最终示例应用却能正常运行。

控制器代码 #

@Controller
public class DataWebSocketController {
    @MessageMapping("/hello")
    @SendTo("/topic/greetings")
    public Greeting greeting(HelloMessage message) throws Exception {
        Thread.sleep(1000); // simulated delay
        return new Greeting("Hello, " + HtmlUtils.htmlEscape(message.getName()) + "!");
    }
}

WebSocket配置类 #

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {

    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableSimpleBroker("/topic");
        config.setApplicationDestinationPrefixes("/app");
    }

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/gs-guide-websocket");
    }
}

安全配置类 #

@Configuration
@EnableWebSecurity
public class SecurityConfig {

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        http
                .csrf(CsrfConfigurer::disable)
                .cors(CorsConfigurer::disable)
                .authorizeHttpRequests((requests) -> requests
                        .anyRequest().permitAll()
                );

        return http.build();
    }

    @Bean
    public CommonsRequestLoggingFilter requestLoggingFilter() {
        CommonsRequestLoggingFilter loggingFilter = new CommonsRequestLoggingFilter();
        loggingFilter.setIncludeClientInfo(true);
        loggingFilter.setIncludeQueryString(true);
        loggingFilter.setIncludePayload(true);
        loggingFilter.setMaxPayloadLength(64000);
        return loggingFilter;
    }
}

依赖配置 #

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-security'
    implementation 'org.springframework.boot:spring-boot-starter-validation'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-websocket'
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    compileOnly 'org.projectlombok:lombok'
    runtimeOnly 'org.postgresql:postgresql'
    annotationProcessor 'org.projectlombok:lombok'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

我已尝试以下操作，但均无效果：

• 修改端口、IP地址
• 关闭安全配置
• 添加.setAllowedOriginPatterns("*").withSockJS();到WebSocket端点配置

请问还有哪些我没尝试或检查的点？

内容的提问来源于stack exchange，提问作者EnGold