Spring WebSocket通信应用二[基于Redis实现Ws分布式]

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
 
    @Autowired
    private RedisConnectionFactory redisConnectionFactory;
 
    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableStompBrokerRelay("/topic", "/queue")
              .setRelayHost("localhost")
              .setRelayPort(61613)
              .setClientLogin("guest")
              .setClientPasscode("guest");
        config.setApplicationDestinationPrefixes("/app");
        config.setUserDestinationPrefix("/user");
    }
 
    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/ws").withSockJS();
    }
 
    @Override
    public boolean configureMessageConverters(List<MessageConverter> messageConverters) {
        // 配置消息转换器，可以自定义消息格式
        return false;
    }
 
    @Override
    public void configureWebSocketTransport(WebSocketTransportRegistration registry) {
        registry.setSendTimeLimit(15000)
                .setSendBufferSizeLimit(512)
                .setMessageSizeLimit(1024);
    }
 
    @Bean
    public RedisBrokerMessageHandler redisBrokerMessageHandler() {
        RedisBrokerMessageHandler handler = new RedisBrokerMessageHandler(redisConnectionFactory());
        handler.setGenerateId(true);
        handler.setSystemPrefix("ws_");
        handler.setApplicationEventPublisher(applicationContext);
        return handler;
    }
 
    @Bean
    public MessageChannel clientInboundChannel() {
        return new DirectChannel();
    }
 
    @Bean
    public MessageChannel clientOutboundChannel() {
        return new DirectChannel();
    }
 
    @Bean
    public SimpleBrokerMessageHandler brokerMessageHandler(SubscribableChannel brokerChannel) {
        SimpleBrokerMessageHandler handler = new SimpleBrokerMessageHandler(clientInboundChannel());
        handler.setOrder(1);
        return handler;
    }
}

这个代码实例展示了如何配置Spring WebSocket消息代理以使用Redis作为中继，实现分布式WebSocket通信。代码中定义了消息代理的配置、STOMP端点的注册以及消息转换器和WebSocket传输的配置。同时，还提供了RedisBrokerMessageHandler和两个MessageChannel的Bean配置，这些是实现基于Redis的Ws服务必不可少的组件。