Spring集成(IntegrationFlowContext):动态注册到同一个websocket服务器的新路径

Question

我试图通过以下链接用JavaDsl实现spring-websocket解决方案，即https://github.com/joshlong/techtips/tree/master/examples/spring-integration-4.1-websockets-example

我通过与我的stomp客户端订阅路径(即/messages(成功地测试了它。

接下来，我尝试了同样的方法，用IntegrationFlowContext注册集成流。

它在服务器端成功执行，但当我试图通过我的stomp客户端发出请求时，我收到了一个404未找到的异常。

在浏览日志时，我发现以前"AbstractHandlerMapping"映射到SockJsHttpRequestHandler，现在它映射到
ResourceHttpRequestHandler

使用Spring管理的集成流程(成功(

DEBUG [http-nio-8081-exec-1] o.s.c.l.LogFormatUtils: GET "/messages/websocket", parameters={}
DEBUG [http-nio-8081-exec-1] o.s.w.s.h.AbstractHandlerMapping: Mapped to org.springframework.web.socket.sockjs.support.SockJsHttpRequestHandler@46185a1b
DEBUG [http-nio-8081-exec-1] o.s.w.s.s.s.AbstractSockJsService: Processing transport request: GET http://localhost:8081/messages/websocket
DEBUG [http-nio-8081-exec-1] o.s.w.s.FrameworkServlet: Completed 101 SWITCHING_PROTOCOLS
DEBUG [http-nio-8081-exec-1] o.s.w.s.h.LoggingWebSocketHandlerDecorator: New StandardWebSocketSession[id=e11b5ef5-d2e5-e5c7-819d-493f42f4a7c8, uri=ws://localhost:8081/messages/websocket]

使用IntegrationFlow上下文管理流(失败(

DEBUG [http-nio-8081-exec-1] o.s.c.l.LogFormatUtils: GET "/messages/websocket", parameters={}
DEBUG [http-nio-8081-exec-1] o.s.w.s.h.AbstractHandlerMapping: Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/", "/"]
DEBUG [http-nio-8081-exec-1] o.s.w.s.r.ResourceHttpRequestHandler: Resource not found
DEBUG [http-nio-8081-exec-1] o.s.w.s.FrameworkServlet: Completed 404 NOT_FOUND
DEBUG [http-nio-8081-exec-1] o.s.c.l.LogFormatUtils: "ERROR" dispatch for GET "/error", parameters={}
DEBUG [http-nio-8081-exec-1] o.s.w.s.h.AbstractHandlerMapping: Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest)
DEBUG [http-nio-8081-exec-1] o.s.w.s.m.m.a.AbstractMessageConverterMethodProcessor: Using 'application/json', given [*/*] and supported [application/json, application/*+json, application/json, application/*+json]
DEBUG [http-nio-8081-exec-1] o.s.c.l.LogFormatUtils: Writing [{timestamp=Tue Feb 25 17:06:58 IST 

Answer 1

由于AbstractHandlerMapping:中的getHandler(HttpServletRequest request)逻辑，您有一个不同的Mapped to ...

Object handler = getHandlerInternal(request);
if (handler == null) {
handler = getDefaultHandler();
}
if (handler == null) {
return null;
}
// Bean name or resolved handler?
if (handler instanceof String) {
String handlerName = (String) handler;
handler = obtainApplicationContext().getBean(handlerName);
}
HandlerExecutionChain executionChain = getHandlerExecutionChain(handler, request);
if (logger.isTraceEnabled()) {
logger.trace("Mapped to " + handler);
}

我们不支持动态WS端点，因为我们不在内部WebSocketHandlerMappingFactoryBean中扫描它们。

随时提出GH问题https://github.com/spring-projects/spring-integration/issues我们会看看我们能为此做些什么。