springBoot websocket

Spring Boot提供了对WebSocket的支持，可以轻松地实现实时通信功能。在Spring Boot中使用WebSocket需要引入spring-boot-starter-websocket依赖，并且编写WebSocket配置类。

以下是一个简单的Spring Boot WebSocket示例：

1. 引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>

2. 编写WebSocket配置类

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(new MyWebSocketHandler(), "/my-websocket");
    }
}

3. 编写WebSocket处理器

public class MyWebSocketHandler extends TextWebSocketHandler {

    @Override
    protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
        // 处理收到的消息
        String payload = message.getPayload();
        session.sendMessage(new TextMessage("收到消息：" + payload));
    }
}

4. 在页面中使用WebSocket

var socket = new WebSocket("ws://localhost:8080/my-websocket");
socket.onmessage = function(event) {
    console.log("收到消息：" + event.data);
};
socket.send("Hello, WebSocket!");