Websocket java客户端Spring + Stomp：传输错误：ConnectionLostException

Question

考虑到 spring 规范和 spring-portafolio 示例，我正在尝试使用 Stomp 和 Sockjs 创建一个独立的 Java 应用程序作为 websocket 客户端，但我收到了这个错误：

15:18:01.342 [main] DEBUG com.example.client.WebSocketClientTest - Connecting to : ws://localhost:8080/socket/hello
15:18:01.541 [WebSocketClient-AsyncIO-1] ERROR com.example.client.MyStompSessionHandler - Transport error
org.springframework.messaging.simp.stomp.ConnectionLostException: Connection closed
at org.springframework.messaging.simp.stomp.DefaultStompSession.afterConnectionClosed(DefaultStompSession.java:483) [spring-messaging-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.socket.messaging.WebSocketStompClient$WebSocketTcpConnectionHandlerAdapter.afterConnectionClosed(WebSocketStompClient.java:354) [spring-websocket-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.socket.sockjs.client.AbstractClientSockJsSession.afterTransportClosed(AbstractClientSockJsSession.java:321) [spring-websocket-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.socket.sockjs.client.WebSocketTransport$ClientSockJsWebSocketHandler.afterConnectionClosed(WebSocketTransport.java:172) [spring-websocket-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.web.socket.adapter.standard.StandardWebSocketHandlerAdapter.onClose(StandardWebSocketHandlerAdapter.java:141) [spring-websocket-4.3.2.RELEASE.jar:4.3.2.RELEASE]...

我在java客户端的代码是：

StandardWebSocketClient webSocketClient = new StandardWebSocketClient();
List<Transport> transports = new ArrayList<>();
transports.add(new WebSocketTransport(webSocketClient));
SockJsClient sockJsClient = new SockJsClient(transports);
ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
taskScheduler.afterPropertiesSet();
String stompUrl = "ws://localhost:8080/socket/hello";
WebSocketStompClient stompClient = new WebSocketStompClient(sockJsClient);
stompClient.setMessageConverter(new StringMessageConverter());
stompClient.setTaskScheduler(taskScheduler);
stompClient.setDefaultHeartbeat(new long[] {0, 0});

StompSessionHandler sessionHandler = new MyStompSessionHandler();
stompClient.connect(stompUrl, sessionHandler);
stompClient.setTaskScheduler(taskScheduler);

服务器端是使用带有 Stomp 和 SockJs 的 Spring MVC 制作的，服务器与 javascript 客户端完美配合，这是我使用的配置：

public void configureMessageBroker(MessageBrokerRegistry config) {
    config.enableSimpleBroker("/topic");
    config.setApplicationDestinationPrefixes("/app");
}
public void registerStompEndpoints(StompEndpointRegistry registry) {
    registry.addEndpoint("/hello")
            .setHandshakeHandler(new DefaultHandshakeHandler(new TomcatRequestUpgradeStrategy()))
            .withSockJS();
}

我做错了什么？谁能给我一个关于如何修复它或如何创建 Java 客户端以连接 Spring websocket 服务器的想法？

提前谢谢..

Answer 1

我遇到了同样的问题。原因是接收到的消息太大，默认 STOMP Spring/Tomcat WS 客户端无法处理，因为 它不能进行部分消息传递。 This StackOverflow answer 为我工作（我设置了MAX_TEXT_MESSAGE_BUFFER_SIZE=20*1024*1024）：

WebSocketContainer container = ContainerProvider.getWebSocketContainer();
container.setDefaultMaxTextMessageBufferSize(MAX_TEXT_MESSAGE_BUFFER_SIZE);
WebSocketClient wsClient = new StandardWebSocketClient(container);

设置 inboundMessageSizeLimit 无效：

WebSocketStompClient stompClient = new WebSocketStompClient(sockJsClient);
stompClient.setInboundMessageSizeLimit(Integer.MAX_VALUE);