以下是一个简化的Spring Boot结合WebSocket实现消息推送、验证机制、心跳机制(PING-PONG)和用户分组的示例代码:
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
@Override
public void configureMessageBroker(MessageBrokerRegistry config) {
config.enableSimpleBroker("/topic"); // 客户端订阅地址的前缀信息
config.setApplicationDestinationPrefixes("/app"); // 客户端发送信息的前缀
}
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/ws").withSockJS(); // 注册STOMP协议的节点,并映射指定的URL,并指定使用SockJS协议
}
}
@Component
public class WebSocketHandler implements WebSocketMessageBrokerHandler {
private SimpMessagingTemplate template;
private SessionRegistry sessionRegistry;
@Autowired
public WebSocketHandler(SimpMessagingTemplate template, SessionRegistry sessionRegistry) {
this.template = template;
this.sessionRegistry = sessionRegistry;
}
@Scheduled(fixedRate = 30000)
public void sendPing() {
for (WebSocketSession session : sessionRegistry.getAllSessions()) {
if (session.isOpen()) {
try {
session.sendMessage(new PingMessage());
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
@Override
public void afterConnectionEstablished(WebSocketSession session) {
// 新连接建立时的处理逻辑
// 例如:将用户的WebSocketSession添加到用户的Session列表中
}
@Override
public void handleTransportError(WebSocketSession session, Throwable exception) {
// 处理传输过程中出现的错误
// 例如:关闭session
}
@Override
public void handleMessage(WebSocketSession session, WebSocketMessage<?> message) {
// 处理客户端发送的消息
// 例如:验证用户身份,然后进行消息转发
}
@Override
public void handlePongMessage(WebSocketSession session, PongMessage message) {
// 处理PONG响应
// 例如:更新用户的心跳时间
}
@Override
public void afterSess