tomcat的webapps下部署多项目报错Unable to register MBean [HikariDataSource (null)] with key ‘dataSource’

1.简介

最近需要将线上跑的多个容器中的项目迁出，其中有一个项目有两个war包，迁出之后部署在同一个虚机上，造成服务启动异常，报出Unable to register MBean [HikariDataSource (null)] with key ‘dataSource’的错误，大概意思就是已经注册了数据源不能重复在注册了，造成了冲突。

2.报错

严重: ContainerBase.addChild: start: 
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/pushdata]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1092)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1984)
	at java.util.concurrent.Executors$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 [HikariDataSource (null)] with key 'dataSource'; nested exception is javax.management.InstanceAlreadyExistsException: com.zaxxer.hikari:name=dataSource,type=HikariDataSource
	at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:628)
	at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:550)
	at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:432)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:781)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
	at org.springframework.boot.web.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:154)
	at org.springframework.boot.web.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:134)
	at org.springframework.boot.web.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:87)
	at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:169)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5632)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	... 10 more
Caused by: javax.management.InstanceAlreadyExistsException: com.zaxxer.hikari:name=dataSource,type=HikariDataSource
	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:195)
	at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:674)
	at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:618)
	... 25 more

一月 07, 2021 9:16:30 上午 org.apache.catalina.startup.HostConfig deployWAR
严重: Error deploying web application archive /var/lib/tomcat/webapps/pushdata.war
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/pushdata]]
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:903)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1092)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1984)
	at java.util.concurrent.Executors$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)

一月 07, 2021 9:16:30 上午 org.apache.catalina.startup.HostConfig deployWAR

3.处理方法

在webapps各项目的application.yml配置文件增加如下配置项：
# jmx 默认域，用于区分项目
spring.jmx.default-domain=项目名称（名称任意，建议项目名称）
例如以下配置文件：

vim /usr/share/tomcat/webapps/cupboard/WEB-INF/classes/application.yml

spring:
  jmx.default-domain: cupboard #增加此配置项，多个项目不要重复即可
  datasource:
    url: jdbc:mysql://itbkz.com:3306/cupboard?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=UTC
    username: 用户名
    password: 密码
    driver-class-name: com.mysql.jdbc.Driver
    type: com.zaxxer.hikari.HikariDataSource
    hikari:
      minimum-idle: 5
      maximum-pool-size: 15
      auto-commit: true
      idle-timeout: 30000
      pool-name: DateHikariCP1
      max-lifetime: 1800000
      connection-timeout: 30000
      connection-test-query: SELECT 1

  http:
    encoding:
      charset: utf-8
      enabled: true
      force: true

  thymeleaf:
    mode: LEGACYHTML5
    servlet:
      content-type: text/html
    cache: false

mybatis:
  mapper-locations: classpath:mapper/*Mapper.xml
  config-location: classpath:mapper/mybatis-config.xml


logging:
  level:
    root: info
####    com.itbkz.query.cupboardquery.dao: debug
  file: /data/tomcat7/logs/cupboard_info.log
  pattern:
    console: "%d %green([%t]) %magenta(%-5p) %cyan(%c) - %m%n"
    file: "%d %thread %-5level -%file:%line- %msg%n"

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