完整报错信息：
17:02:09.942 [main] ERROR org.apache.catalina.core.ContainerBase - A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_111]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) [tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) [?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:437) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:191) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) [spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at com.yinhai.drg.DemoApplication.main(DemoApplication.java:10) [classes/:?]
Caused by: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardPipeline.startInternal(StandardPipeline.java:176) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5056) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
... 30 more
Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
at org.apache.catalina.authenticator.AuthenticatorBase.startInternal(AuthenticatorBase.java:1321) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardPipeline.startInternal(StandardPipeline.java:176) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5056) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
... 30 more
17:02:09.954 [main] ERROR org.apache.catalina.core.ContainerBase - A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_111]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:437) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:191) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) [spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at com.yinhai.drg.DemoApplication.main(DemoApplication.java:10) [classes/:?]
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:928) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
... 22 more
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_111]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
... 22 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardPipeline.startInternal(StandardPipeline.java:176) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5056) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
... 22 more
Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
at org.apache.catalina.authenticator.AuthenticatorBase.startInternal(AuthenticatorBase.java:1321) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardPipeline.startInternal(StandardPipeline.java:176) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5056) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[?:1.8.0_111]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
... 22 more
17:02:09.963 [main] INFO org.apache.coyote.http11.Http11NioProtocol - Pausing ProtocolHandler ["http-nio-8083"]
17:02:09.963 [main] INFO org.apache.catalina.core.StandardService - Stopping service [Tomcat]
17:02:09.964 [main] INFO org.apache.coyote.http11.Http11NioProtocol - Destroying ProtocolHandler ["http-nio-8083"]
17:02:10.013 [main] WARN org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
17:02:10.021 [main] INFO org.springframework.boot.autoconfigure.logging.ConditionEvaluationReportLoggingListener -
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
17:02:10.027 [main] ERROR org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter -
***************************
APPLICATION FAILED TO START
***************************
Description:
An attempt was made to call a method that does not exist. The attempt was made from the following location:
org.apache.catalina.authenticator.AuthenticatorBase.startInternal(AuthenticatorBase.java:1321)
The following method did not exist:
javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
The method's class, javax.servlet.ServletContext, is available from the following locations:
jar:file:/D:/Users/acer/yhDrg/lib/javaee.jar!/javax/servlet/ServletContext.class
jar:file:/D:/Program%20Files/apache-maven/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.37/tomcat-embed-core-9.0.37.jar!/javax/servlet/ServletContext.class
The class hierarchy was loaded from the following locations:
javax.servlet.ServletContext: file:/D:/Users/acer/yhDrg/lib/javaee.jar
Action:
Correct the classpath of your application so that it contains a single, compatible version of javax.servlet.ServletContext
重点看最后几行，大意就是该方法的类已经启动在两个jar包中了，这时候要删掉一个，不过只能删自己意外引入的，Tomcat自带的不能删。然后再重新启动，就可以了
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