springBoot报错: 'org.springframework.messaging.simp.SimpMessagingTemplate'

本文介绍了如何解决在Spring项目中出现的SimpMessagingTemplate类未找到的问题。通过全局搜索并注释掉该类的导入语句,成功解决了错误。

A component required a bean of type

 'org.springframework.messaging.simp.SimpMessagingTemplate' that could not be found.

找不到jar包的情况,一般都是在pom.xml 添加,然后刷新maven,

这个报错找了一会jar包,可是不是jar包的问题,

于是全局搜索用到这个类的地方,把它注释掉 !

import org.springframework.messaging.simp.SimpMessagingTemplate;

然后没事了


按你的回答写了,报错:java.lang.RuntimeException: 命令发送失败 at com.example.demo.config.StompClientSender.sendCommand(StompClientSender.java:50) ~[classes/:na] at com.example.demo.service.impl.WExecuteHostServiceImpl.toExecuteCommand(WExecuteHostServiceImpl.java:215) ~[classes/:na] at com.example.demo.service.impl.WExecuteHostServiceImpl$$FastClassBySpringCGLIB$$7d9ec1f4.invoke(<generated>) ~[classes/:na] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.27.jar:5.3.27] at org.springframework.aop.framework.CglibAopProxy.invokeMethod(CglibAopProxy.java:386) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.CglibAopProxy.access$000(CglibAopProxy.java:85) ~[spring-aop-5.3.27.jar:5.3.27] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:704) ~[spring-aop-5.3.27.jar:5.3.27] at com.example.demo.service.impl.WExecuteHostServiceImpl$$EnhancerBySpringCGLIB$$40b7ad6c.toExecuteCommand(<generated>) ~[classes/:na] at com.example.demo.controller.WinController.toExecuteCommand(WinController.java:57) ~[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_301] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_301] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_301] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_301] at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:169) ~[spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:119) ~[spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.handler.invocation.AbstractMethodMessageHandler.handleMatch(AbstractMethodMessageHandler.java:569) [spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.simp.annotation.support.SimpAnnotationMethodMessageHandler.handleMatch(SimpAnnotationMethodMessageHandler.java:511) [spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.simp.annotation.support.SimpAnnotationMethodMessageHandler.handleMatch(SimpAnnotationMethodMessageHandler.java:94) [spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.handler.invocation.AbstractMethodMessageHandler.handleMessageInternal(AbstractMethodMessageHandler.java:524) [spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.handler.invocation.AbstractMethodMessageHandler.handleMessage(AbstractMethodMessageHandler.java:458) [spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.support.ExecutorSubscribableChannel$SendTask.run(ExecutorSubscribableChannel.java:144) [spring-messaging-5.3.20.jar:5.3.20] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_301] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_301] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_301] Caused by: org.springframework.messaging.converter.MessageConversionException: Unable to convert payload with type='java.util.HashMap', contentType='null', converter=[org.springframework.messaging.converter.StringMessageConverter@33c4fe6f] at org.springframework.messaging.simp.stomp.DefaultStompSession.createMessage(DefaultStompSession.java:276) ~[spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.simp.stomp.DefaultStompSession.send(DefaultStompSession.java:240) ~[spring-messaging-5.3.20.jar:5.3.20] at org.springframework.messaging.simp.stomp.DefaultStompSession.send(DefaultStompSession.java:228) ~[spring-messaging-5.3.20.jar:5.3.20] at com.example.demo.config.StompClientSender.sendCommand(StompClientSender.java:48) ~[classes/:na] ... 23 common frames omitted
06-25
10:19:24.850 [main] DEBUG org.springframework.web.client.RestTemplate - Response 404 NOT_FOUND 10:19:24.852 [main] ERROR org.springframework.web.socket.sockjs.client.SockJsClient - Initial SockJS "Info" request to server failed, url=wss://127.0.0.1:8081/api/vms/vms-8ff225f900a44a90a937143fe6774a98/ws/status/230/xgydnmu0/websocket org.springframework.web.client.HttpClientErrorException$NotFound: 404 : [no body] at org.springframework.web.client.HttpClientErrorException.create(HttpClientErrorException.java:113) at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:168) at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:122) at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63) at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:819) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:777) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:751) at org.springframework.web.socket.sockjs.client.RestTemplateXhrTransport.executeInfoRequestInternal(RestTemplateXhrTransport.java:138) at org.springframework.web.socket.sockjs.client.AbstractXhrTransport.executeInfoRequest(AbstractXhrTransport.java:128) at org.springframework.web.socket.sockjs.client.SockJsClient.getServerInfo(SockJsClient.java:294) at org.springframework.web.socket.sockjs.client.SockJsClient.doHandshake(SockJsClient.java:260) at org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:270) at org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:250) at com.tplink.cloud.demo.websocket_client.WebsocketClientApplication.main(WebsocketClientApplication.java:49) 10:19:24.853 [main] DEBUG org.springframework.messaging.simp.stomp.DefaultStompSession - Failed to connect session id=17440e19-e1ec-618c-2cd6-1b9d5f9337f4 org.springframework.web.client.HttpClientErrorException$NotFound: 404 : [no body] at org.springframework.web.client.HttpClientErrorException.create(HttpClientErrorException.java:113) at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:168) at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:122) at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63) at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:819) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:777) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:751) at org.springframework.web.socket.sockjs.client.RestTemplateXhrTransport.executeInfoRequestInternal(RestTemplateXhrTransport.java:138) at org.springframework.web.socket.sockjs.client.AbstractXhrTransport.executeInfoRequest(AbstractXhrTransport.java:128) at org.springframework.web.socket.sockjs.client.SockJsClient.getServerInfo(SockJsClient.java:294) at org.springframework.web.socket.sockjs.client.SockJsClient.doHandshake(SockJsClient.java:260) at org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:270) at org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:250) at com.tplink.cloud.demo.websocket_client.WebsocketClientApplication.main(WebsocketClientApplication.java:49) org.springframework.web.client.HttpClientErrorException$NotFound: 404 : [no body] at org.springframework.web.client.HttpClientErrorException.create(HttpClientErrorException.java:113) at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:168) at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:122) at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63) at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:819) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:777) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:751) at org.springframework.web.socket.sockjs.client.RestTemplateXhrTransport.executeInfoRequestInternal(RestTemplateXhrTransport.java:138) at org.springframework.web.socket.sockjs.client.AbstractXhrTransport.executeInfoRequest(AbstractXhrTransport.java:128) at org.springframework.web.socket.sockjs.client.SockJsClient.getServerInfo(SockJsClient.java:294) at org.springframework.web.socket.sockjs.client.SockJsClient.doHandshake(SockJsClient.java:260) at org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:270) at org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:250) at com.tplink.cloud.demo.websocket_client.WebsocketClientApplication.main(WebsocketClientApplication.java:49)
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