JavaWeb学习日报12

学习内容
WebSocket协议简介。

使用Spring Boot实现WebSocket通信。

代码示例
java

@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("/ws").withSockJS();
    }
}

@Controller
public class WebSocketController {
    @MessageMapping("/chat")
    @SendTo("/topic/messages")
    public String sendMessage(String message) {
        return "Received: " + message;
    }
}