我们刚刚尝试将我们的一个项目从Spring 4.0.7迁移。释放到4.1.1。释放。之后我们得到以下错误。
java.lang.IllegalStateException: Multiple protocol handlers configured and no protocol was negotiated. Consider configuring a default SubProtocolHandler.
at org.springframework.web.socket.messaging.SubProtocolWebSocketHandler.findProtocolHandler(SubProtocolWebSocketHandler.java:294)
at org.springframework.web.socket.messaging.SubProtocolWebSocketHandler.clearSession(SubProtocolWebSocketHandler.java:433)
at org.springframework.web.socket.messaging.SubProtocolWebSocketHandler.afterConnectionClosed(SubProtocolWebSocketHandler.java:423)
at org.springframework.web.socket.handler.WebSocketHandlerDecorator.afterConnectionClosed(WebSocketHandlerDecorator.java:85)
at org.springframework.web.socket.handler.LoggingWebSocketHandlerDecorator.afterConnectionClosed(LoggingWebSocketHandlerDecorator.java:71)
at org.springframework.web.socket.handler.ExceptionWebSocketHandlerDecorator.afterConnectionClosed(ExceptionWebSocketHandlerDecorator.java:91)
at org.springframework.web.socket.sockjs.transport.session.AbstractSockJsSession.close(AbstractSockJsSession.java:291)
at org.springframework.web.socket.handler.ExceptionWebSocketHandlerDecorator.tryCloseWithError(ExceptionWebSocketHandlerDecorator.java:60)
at org.springframework.web.socket.handler.ExceptionWebSocketHandlerDecorator.afterConnectionEstablished(ExceptionWebSocketHandlerDecorator.java:50)
at org.springframework.web.socket.sockjs.transport.session.AbstractSockJsSession.delegateConnectionEstablished(AbstractSockJsSession.java:207)
at org.springframework.web.socket.sockjs.transport.session.WebSocketServerSockJsSession.initializeDelegateSession(WebSocketServerSockJsSession.java:159)
at org.springframework.web.socket.sockjs.transport.handler.SockJsWebSocketHandler.afterConnectionEstablished(SockJsWebSocketHandler.java:87)
at org.springframework.web.socket.adapter.standard.StandardWebSocketHandlerAdapter.onOpen(StandardWebSocketHandlerAdapter.java:101)
at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:129)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:633)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1721)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1679)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
我们没有在配置上更改任何内容(并且找不到任何提示我们必须更改任何内容)。
这是我们WebSockets的服务器端配置。(它实际上与Spring留档中的相同)。
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfiguration extends AbstractWebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(final StompEndpointRegistry registry) {
registry.addEndpoint("/tyresearch").withSockJS();
registry.addEndpoint("/tyresearch/changeConfiguration").withSockJS();
registry.addEndpoint("/tyresearch/detailView").withSockJS();
}
@Override
public void configureMessageBroker(final MessageBrokerRegistry config) {
config.enableSimpleBroker("/topic");
config.setApplicationDestinationPrefixes("/app");
}
}
此外,我们在方法之前描述了每个endpoint,如下所示:
@MessageMapping("/tyresearch")
public void startTyreSearch(@Payload final TyreSearchRequestContainerDto message, final Principal user, final StompHeaderAccessor) {
....
}
来自JavaScript的客户端调用如下所示:
var socket = new $wnd.SockJS('/server/api/rest/tyresearch');
var stompClient = $wnd.Stomp.over(socket);
stompClient.connect({}, function(frame) {
console.log('Connected: ' + frame);
});
有人有想法吗,什么变化让我们在这里遇到麻烦,如何解决这个问题?
非常感谢。
首先它真的是一个bug
。谢谢你指出它!
我们提出了一个问题(https://jira.spring.io/browse/SPR-12403),它将在下周修复。
在那之前,你不能用一个endpoint来克服踩踏endpoint的malty映射吗?
更新
我收到一个错误,告诉我协议第1.0、1.1和1.2已经映射
由于我们在这里确实有一个问题,您需要以某种方式克服它,我建议您尝试覆盖bean:
@Bean
public WebSocketHandler subProtocolWebSocketHandler() {
return new SubProtocolWebSocketHandler(clientInboundChannel(), clientOutboundChannel());
}
使用您的自定义实现,其中addStatcolHandler
将有一个空主体,因为您说您已经将STOMP
定义为默认主体。有了这个框架,将无法添加更多的SubStatcolHandler
。