我正在使用带有maven的java springboot来获得spring boot starter socket包。我的客户正在使用角度与stompjs和sockjs-client。我正在尝试设置一个简单的Web套接字应用程序,允许基于roomId的多个房间。当客户加入房间时,他们应该收到该房间发送的最后五条消息。
我的Springboot应用程序有三个类,我用来运行应用程序的基本Application.java,一个Web套接字配置类和一个Web套接字控制器:
@Controller
public class WebSocketController {
private final SimpMessagingTemplate template;
@Autowired
WebSocketController(SimpMessagingTemplate template){
this.template = template;
}
@MessageMapping("/meeting/{roomId}")
private void sendMessageTpPrivateRoom(
String message,
@DestinationVariable String roomId
) throws IOException {
System.out.println("message sent to: " + roomId);
this.template.convertAndSend("/meeting/" + roomId, message);
addToHistory(roomId, message);
}
@SubscribeMapping("/meeting/{roomId}")
public String chatInit(@DestinationVariable String roomId) {
System.out.println("Someone joined room: " + roomId);
return getLastFiveMessages(roomId);
}
}
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfiguration
extends AbstractWebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/socket")
.setAllowedOrigins("*")
.withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.setApplicationDestinationPrefixes("/app")
.enableSimpleBroker("/meeting");
}
}
我的客户正在订阅套接字,如下所示:
stompClient.subscribe(`app/meeting/${roomId}`, (message) => {
if (message.body) {
console.log(message.body);
messages += '<br>' + message.body;
}
});
并发送如下消息:
this.stompClient.send(`/app/meeting/${this.roomId}` , {}, message);
消息发送和处理工作很好,当我设置三个客户端,两个在房间一,一个在房间二,房间两个消息没有在房间一看到,房间一个消息被两个客户看到。
但是,无论我加入什么房间,on subscribe事件都不会触发。非常有必要当客户加入第一个房间时,他们应该收到该房间的某种历史记录。有关为何在客户订阅房间时未触发我的SubscribeMapping方法的建议?
/meeting
部分将隐式添加到您订阅时提供的URL中。所以你的映射将如下所示:
@SubscribeMapping("/${roomId}")
public String chatInit(@DestinationVariable String roomId) {
System.out.println("Someone joined room: " + roomId);
return getLastFiveMessages(roomId);
}