Spring启动stomp服务器对解析的org.springframework.http.converter.HttpMessageNotWritableException发出警告
Spring启动stomp服务器对解析的org.springframework.http.converter.HttpMessageNotWritableException发出警告
提问于 2022-05-30 13:21:09
到目前为止，我一直在使用spring启动和stomp服务器。使用它一段时间后，我发现我的日志中充满了下面的警告消息。
08:58:36.026 [38] [http-nio-8080-exec-8] WARN org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Resolved [org.springframework.http.converter.HttpMessageNotWritableException: No converter for [class java.util.LinkedHashMap] with preset Content-Type 'application/javascript;charset=UTF-8'],为了进一步了解正在发生的事情，我将spring框架日志设置为TRACE，日志的其余部分如下所示。
08:58:35.991 [94] [clientOutboundChannel-14] TRACE org.springframework.web.socket.sockjs.transport.handler.XhrStreamingTransportHandler$XhrStreamingSockJsSession - 1 message(s) to flush in session d3zz_wqj,
08:58:35.991 [94] [clientOutboundChannel-14] TRACE org.springframework.web.socket.sockjs.transport.handler.XhrStreamingTransportHandler$XhrStreamingSockJsSession - Session is active, ready to flush.,
08:58:35.991 [94] [clientOutboundChannel-14] TRACE org.springframework.web.socket.sockjs.transport.handler.XhrStreamingTransportHandler$XhrStreamingSockJsSession - Preparing to write SockJsFrame content='a[\"\\n\"]',
08:58:35.991 [94] [clientOutboundChannel-14] TRACE org.springframework.web.socket.sockjs.transport.handler.XhrStreamingTransportHandler$XhrStreamingSockJsSession - Writing to HTTP response: a[\"\\n\"],
08:58:35.992 [94] [clientOutboundChannel-14] TRACE org.springframework.web.socket.sockjs.DisconnectedClient - Looks like the client has gone away,
08:58:35.994 [94] [clientOutboundChannel-14] DEBUG org.springframework.web.socket.sockjs.transport.handler.XhrStreamingTransportHandler$XhrStreamingSockJsSession - Closing SockJS session d3zz_wqj with CloseStatus[code=1011, reason=null],
08:58:35.994 [94] [clientOutboundChannel-14] DEBUG org.springframework.web.socket.handler.LoggingWebSocketHandlerDecorator - XhrStreamingSockJsSession[id=d3zz_wqj] closed with CloseStatus[code=1011, reason=null],
08:58:35.994 [94] [clientOutboundChannel-14] DEBUG org.springframework.web.socket.messaging.SubProtocolWebSocketHandler - Clearing session d3zz_wqj,
08:58:35.994 [94] [clientOutboundChannel-14] TRACE org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'getTracer',
08:58:35.994 [102] [clientInboundChannel-21] TRACE org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'getTracer',
08:58:35.994 [94] [clientOutboundChannel-14] TRACE org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'getTracer',
08:58:35.994 [100] [clientInboundChannel-19] TRACE org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'getTracer',
08:58:35.994 [94] [clientOutboundChannel-14] TRACE org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'getTracer',
08:58:35.994 [103] [clientInboundChannel-22] TRACE org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'getTracer',
08:58:35.994 [103] [clientInboundChannel-22] DEBUG org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandler - Forwarding DISCONNECT session=d3zz_wqj,
08:58:35.994 [103] [clientInboundChannel-22] TRACE org.springframework.messaging.simp.stomp.StompEncoder - Encoding STOMP DISCONNECT, headers=null,
08:58:35.996 [46] [tcp-client-loop-nio-4] DEBUG org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandler - Cleaning up connection state for session d3zz_wqj,
08:58:35.996 [46] [tcp-client-loop-nio-4] DEBUG org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandler - Closing TCP connection in session d3zz_wqj,
08:58:35.998 [94] [clientOutboundChannel-14] DEBUG org.springframework.web.socket.messaging.StompSubProtocolHandler - Failed to send WebSocket message to client in session d3zz_wqj,
08:58:36.005 [38] [http-nio-8080-exec-8] TRACE org.springframework.boot.web.servlet.filter.OrderedRequestContextFilter - Bound request context to thread: org.apache.catalina.core.ApplicationHttpRequest@2f4e2263",
08:58:36.005 [38] [http-nio-8080-exec-8] TRACE org.springframework.web.servlet.DispatcherServlet - \"INCLUDE\" dispatch for POST \"/socket/error\", parameters={}, headers={masked} in DispatcherServlet 'dispatcherServlet',
08:58:36.010 [38] [http-nio-8080-exec-8] TRACE org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - 2 matching mappings: [{ [/error]}, { [/error], produces [text/html]}],
08:58:36.010 [38] [http-nio-8080-exec-8] TRACE org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'basicErrorController',
08:58:36.010 [38] [http-nio-8080-exec-8] TRACE org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest),
08:58:36.018 [38] [http-nio-8080-exec-8] TRACE org.springframework.web.method.HandlerMethod - Arguments: [org.apache.catalina.core.ApplicationHttpRequest@2f4e2263],
08:58:36.021 [38] [http-nio-8080-exec-8] DEBUG org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor - Found 'Content-Type:application/javascript;charset=UTF-8' in response,
08:58:36.022 [38] [http-nio-8080-exec-8] TRACE org.springframework.web.method.HandlerMethod - Error handling return value=[<200 OK OK,{timestamp=Fri May 27 08:58:36 UTC 2022, status=200, error=OK, path=/socket/ws/067/d3zz_wqj/xhr_streaming},[]>], type=org.springframework.http.ResponseEntity in org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest),
08:58:36.026 [38] [http-nio-8080-exec-8] WARN org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Resolved [org.springframework.http.converter.HttpMessageNotWritableException: No converter for [class java.util.LinkedHashMap] with preset Content-Type 'application/javascript;charset=UTF-8'],
08:58:36.026 [38] [http-nio-8080-exec-8] TRACE org.springframework.web.servlet.DispatcherServlet - No view rendering, null ModelAndView returned.,
08:58:36.027 [38] [http-nio-8080-exec-8] DEBUG org.springframework.web.servlet.DispatcherServlet - Exiting from \"INCLUDE\" dispatch, status 200, headers={masked},
08:58:36.027 [38] [http-nio-8080-exec-8] TRACE org.springframework.boot.web.servlet.filter.OrderedRequestContextFilter - Cleared thread-bound request context: org.apache.catalina.core.ApplicationHttpRequest@2f4e2263,查看日志，我可以看到，在服务器将框架a["\n"]发送到客户端之前，客户端已经断开连接，试图将帧发送到关闭的套接字将导致错误。有什么正确的方法来处理这个错误吗？
回答 1
Stack Overflow用户
发布于 2022-05-30 13:35:04
服务器似乎希望将LinkedHashMap编写为application/javascript;charset=UTF-8，但无法找到转换器。这很有道理。
我想返回类型(这里可能是mime类型，但可能是java类型)是错误的。我们需要查看您的端点，以便更好地回答如何解决这个问题。
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原文链接：
https://stackoverflow.com/questions/72435036
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