IDEA2023版本，做的硅谷课堂的简单查询教师表，创建项目时spring版本用的2.7.13，创建后改成2.2.1，启动后输出的2.2.1版本的日志内容正确，下方又输出了3.3.1版本的错误日志
2.2.1的内容：
2023-05-23 22:26:02.545 INFO 5360 --- [ restartedMain] o.s.b.devtools.restart.ChangeableUrls : The Class-Path manifest attribute in D:\aaMaven\apache-maven-3.6.1\apache-maven-3.6.1\mvn_repo\org\glassfish\jaxb\jaxb-runtime\2.3.2\jaxb-runtime-2.3.2.jar referenced one or more files that do not exist: file:/D:/aaMaven/apache-maven-3.6.1/apache-maven-3.6.1/mvn_repo/org/glassfish/jaxb/jaxb-runtime/2.3.2/jakarta.xml.bind-api-2.3.2.jar,file:/D:/aaMaven/apache-maven-3.6.1/apache-maven-3.6.1/mvn_repo/org/glassfish/jaxb/jaxb-runtime/2.3.2/txw2-2.3.2.jar,file:/D:/aaMaven/apache-maven-3.6.1/apache-maven-3.6.1/mvn_repo/org/glassfish/jaxb/jaxb-runtime/2.3.2/istack-commons-runtime-3.0.8.jar,file:/D:/aaMaven/apache-maven-3.6.1/apache-maven-3.6.1/mvn_repo/org/glassfish/jaxb/jaxb-runtime/2.3.2/stax-ex-1.8.1.jar,file:/D:/aaMaven/apache-maven-3.6.1/apache-maven-3.6.1/mvn_repo/org/glassfish/jaxb/jaxb-runtime/2.3.2/FastInfoset-1.2.16.jar,file:/D:/aaMaven/apache-maven-3.6.1/apache-maven-3.6.1/mvn_repo/org/glassfish/jaxb/jaxb-runtime/2.3.2/jakarta.activation-api-1.2.1.jar
2023-05-23 22:26:02.547 INFO 5360 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2023-05-23 22:26:02.732 INFO 5360 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
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:: Spring Boot :: (v2.2.1.RELEASE)
2023-05-23 22:26:02.977 INFO 5360 --- [ restartedMain] c.a.ggkt.vod.ServiceVodApplication : The following profiles are active: dev
2023-05-23 22:26:03.677 INFO 5360 --- [ restartedMain] o.s.cloud.context.scope.GenericScope : BeanFactory id=48e2d5d7-0f1f-3544-9a31-01660a04c0fb
2023-05-23 22:26:03.749 INFO 5360 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2023-05-23 22:26:03.761 INFO 5360 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2023-05-23 22:26:04.105 INFO 5360 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8301 (http)
2023-05-23 22:26:04.115 INFO 5360 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2023-05-23 22:26:04.115 INFO 5360 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.27]
2023-05-23 22:26:04.244 INFO 5360 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2023-05-23 22:26:04.244 INFO 5360 --- [ restartedMain] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1258 ms
Logging initialized using 'class org.apache.ibatis.logging.stdout.StdOutImpl' adapter.
Parsed mapper file: 'file [D:\hzu\ggkt_parent\service\service_vod\target\classes\com\atguigu\ggkt\vod\mapper\xml\TeacherMapper.xml]'
3.3.1的内容：
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3.3.1
2023-05-23 22:26:04.811 WARN 5360 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2023-05-23 22:26:04.811 INFO 5360 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2023-05-23 22:26:04.815 WARN 5360 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2023-05-23 22:26:04.815 INFO 5360 --- [ restartedMain] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2023-05-23 22:26:04.931 INFO 5360 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2023-05-23 22:26:05.166 INFO 5360 --- [ restartedMain] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 'Nacso-Watch-Task-Scheduler'
2023-05-23 22:26:05.374 INFO 5360 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2023-05-23 22:26:05.761 INFO 5360 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8301 (http) with context path ''
2023-05-23 22:26:07.863 ERROR 5360 --- [ restartedMain] c.a.c.n.registry.NacosServiceRegistry : nacos registry, service-vod register failed...NacosRegistration{nacosDiscoveryProperties=NacosDiscoveryProperties{serverAddr='127.0.0.1:8848', endpoint='', namespace='', watchDelay=30000, logName='', service='service-vod', weight=1.0, clusterName='DEFAULT', group='DEFAULT_GROUP', namingLoadCacheAtStart='false', metadata={preserved.register.source=SPRING_CLOUD}, registerEnabled=true, ip='10.77.98.55', networkInterface='', port=8301, secure=false, accessKey='', secretKey='', heartBeatInterval=null, heartBeatTimeout=null, ipDeleteTimeout=null}},
java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers([127.0.0.1:8848]) tried: failed to req API:127.0.0.1:8848/nacos/v1/ns/instance. code:500 msg: java.net.ConnectException: Connection refused: connect
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:467) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:389) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.nacos.client.naming.net.NamingProxy.registerService(NamingProxy.java:191) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:207) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:64) ~[spring-cloud-alibaba-nacos-discovery-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) [spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:76) [spring-cloud-alibaba-nacos-discovery-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) [spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) [spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) [spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) [spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) [spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) [spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) [spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) [spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:165) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) [spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at com.atguigu.ggkt.vod.ServiceVodApplication.main(ServiceVodApplication.java:9) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_321]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_321]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_321]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_321]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.1.RELEASE.jar:2.2.1.RELEASE]
2023-05-23 22:26:07.968 INFO 5360 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2023-05-23 22:26:07.977 INFO 5360 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-05-23 22:26:07.980 INFO 5360 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
2023-05-23 22:26:07.989 ERROR 5360 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers([127.0.0.1:8848]) tried: failed to req API:127.0.0.1:8848/nacos/v1/ns/instance. code:500 msg: java.net.ConnectException: Connection refused: connect
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:467) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:389) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.nacos.client.naming.net.NamingProxy.registerService(NamingProxy.java:191) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:207) ~[nacos-client-1.1.4.jar:na]
at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:64) ~[spring-cloud-alibaba-nacos-discovery-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) ~[spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:76) ~[spring-cloud-alibaba-nacos-discovery-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) ~[spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) ~[spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) ~[spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) ~[spring-cloud-commons-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:165) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at com.atguigu.ggkt.vod.ServiceVodApplication.main(ServiceVodApplication.java:9) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_321]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_321]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_321]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_321]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.1.RELEASE.jar:2.2.1.RELEASE]
3.3.1是mybatis。
后面的报错是连不上nacos，检查配置，如使用nacos做配置中心或注册中心，确保本机nacos可用
不知你怎么理解的，下面是mybatis的输出，错误是因为你nacos的服务端注册不成功