下面是druid配置：
#数据库连接池druid配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
# 初始化大小2，最小5，最大20
spring.datasource.druid.min-idle=5
spring.datasource.druid.max-active=20
# 配置获取连接等待超时的时间
spring.datasource.druid.max-wait=60000
# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位毫秒
spring.datasource.druid.time-between-eviction-runs-millis=60000
# 配置一个连接在池中最小生存时间
spring.datasource.druid.min-evictable-idle-time-millis=30000
# 验证数据库连接的有效性
spring.datasource.druid.validation-query=SELECT 1 FROM DUAL
# 下面3句大致意思就是说，当数据库没有接收到请求时，会进行数据库连接检测，
# 检查数据库是否还是连着的。检查数据库是否断开需要发送sql语句。
# 报错是说这个sql语句没有设置。
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.test-on-borrow=false
spring.datasource.druid.test-on-return=false
# 打开 PSCache，并且指定每个连接上 PSCache 的大小
spring.datasource.druid.pool-prepared-statements=true
spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
# 配置监控统计拦截的 Filter，去掉后监控界面 SQL 无法统计，wall 用于防火墙
spring.datasource.druid.filters=stat,wall,log4j2
# 通过 connection-properties 属性打开 mergeSql 功能；慢 SQL 记录
spring.datasource.druid.connection-properties=druid.stat.mergeSql\=true;druid.stat.slowSqlMillis\=5000
# 配置 DruidStatFilter
spring.datasource.druid.web-stat-filter.enabled=true
spring.datasource.druid.web-stat-filter.url-pattern=/*
spring.datasource.druid.web-stat-filter.exclusions=.js,*.mp3,*.jpeg,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*
# 配置 DruidStatViewServlet
spring.datasource.druid.stat-view-servlet.url-pattern=/druid/*
# IP 白名单，没有配置或者为空，则允许所有访问
spring.datasource.druid.stat-view-servlet.allow=127.0.0.1
# IP 黑名单，若白名单也存在，则优先使用
spring.datasource.druid.stat-view-servlet.deny=189.210.215.158
# 禁用 HTML 中 Reset All 按钮
spring.datasource.druid.stat-view-servlet.reset-enable=false
# 登录用户名/密码
spring.datasource.druid.stat-view-servlet.login-username=root
spring.datasource.druid.stat-view-servlet.login-password=123
这是错误信息：
[15:34:20.715] INFO org.springframework.scheduling.concurrent.ExecutorConfigurationSupport 171 initialize - Initializing ExecutorService 'applicationTaskExecutor'
[15:34:21.335] ERROR org.springframework.boot.SpringApplication 821 reportFailure - Application run failed org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [com.alibaba.druid.filter.stat.StatFilter@29a340ae] with key 'statFilter'; nested exception is javax.management.InstanceAlreadyExistsException: com.alibaba.druid.filter.stat:name=statFilter,type=StatFilter
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:625) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.jmx.export.MBeanExporter.lambda$registerBeans$2(MBeanExporter.java:551) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at java.util.HashMap.forEach(HashMap.java:1289) ~[?:1.8.0_221]
at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:551) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:434) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:862) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:311) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:151) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:131) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:91) [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:171) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5154) [catalina.jar:8.5.45]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.5.45]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743) [catalina.jar:8.5.45]
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719) [catalina.jar:8.5.45]
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714) [catalina.jar:8.5.45]
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:970) [catalina.jar:8.5.45]
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1841) [catalina.jar:8.5.45]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_221]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_221]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_221]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_221]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_221]
Caused by: javax.management.InstanceAlreadyExistsException: com.alibaba.druid.filter.stat:name=statFilter,type=StatFilter
at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) ~[?:1.8.0_221]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) ~[?:1.8.0_221]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) ~[?:1.8.0_221]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) ~[?:1.8.0_221]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) ~[?:1.8.0_221]
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) ~[?:1.8.0_221]
at org.springframework.jmx.support.MBeanRegistrationSupport.doRegister(MBeanRegistrationSupport.java:137) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:671) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:615) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
... 27 more
[15:34:21.341] INFO org.springframework.scheduling.concurrent.ExecutorConfigurationSupport 208 shutdown - Shutting down ExecutorService 'applicationTaskExecutor'
[15:34:21.393] DEBUG com.alibaba.druid.filter.logging.Log4j2Filter 132 connectionLog - {conn-10001} closed
[15:34:21.393] DEBUG com.alibaba.druid.filter.logging.Log4j2Filter 132 connectionLog - {conn-10002} closed
[15:34:21.394] INFO com.alibaba.druid.pool.DruidDataSource 1825 close - {dataSource-1} closed
01-Nov-2019 15:34:21.395 SEVERE [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/canon]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:970)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1841)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [com.alibaba.druid.filter.stat.StatFilter@29a340ae] with key 'statFilter'; nested exception is javax.management.InstanceAlreadyExistsException: com.alibaba.druid.filter.stat:name=statFilter,type=StatFilter
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:625)
at org.springframework.jmx.export.MBeanExporter.lambda$registerBeans$2(MBeanExporter.java:551)
at java.util.HashMap.forEach(HashMap.java:1289)
at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:551)
at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:434)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:862)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:311)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:151)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:131)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:91)
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:171)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5154)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 10 more
Caused by: javax.management.InstanceAlreadyExistsException: com.alibaba.druid.filter.stat:name=statFilter,type=StatFilter
at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
at org.springframework.jmx.support.MBeanRegistrationSupport.doRegister(MBeanRegistrationSupport.java:137)
at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:671)
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:615)
... 27 more
01-Nov-2019 15:34:21.410 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/canon.war]
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/canon]]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:747)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:970)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1841)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
01-Nov-2019 15:34:21.418 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/canon.war] has finished in [10,387] ms
01-Nov-2019 15:34:21.420 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/examples]
01-Nov-2019 15:34:22.070 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/examples] has finished in [650] ms
01-Nov-2019 15:34:22.070 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/manager]
01-Nov-2019 15:34:22.105 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/manager] has finished in [35] ms
01-Nov-2019 15:34:22.105 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/docs]
01-Nov-2019 15:34:22.139 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/docs] has finished in [34] ms
01-Nov-2019 15:34:22.139 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/host-manager]
01-Nov-2019 15:34:22.176 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat8/apache-tomcat-8.5.45/webapps/host-manager] has finished in [37] ms
01-Nov-2019 15:34:22.202 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-80"]
01-Nov-2019 15:34:22.219 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
01-Nov-2019 15:34:22.222 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 116011 ms
启动的时候报这些错误，请问怎么回事