title: Spring Boot Actuator failing to start up with error creating mbeamexporter
body: <p>I have an spring boot application that is failing to startup after a redeploy of the application.  The error appears to be cause by failure to create mbeanExporter.  </p>
  
  <p>I have also include the following line in the property file hoping to prevent the error on startup.</p>
  
  <pre><code>endpoints.jmx.domain=app_dcs_consumerappointmentnotification
  </code></pre>
  
  <p>I have uninstalled and restarted the JVM several times.  Sometimes after a restart of the JVM the error disappears.  </p>
  
  <pre><code>2014/10/07 17:09:54.727 ERROR o.s.b.SpringApplication - Application startup failed
  org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mbeanExporter' defined in class path resource [org/springframework/context/annotation/MBeanExportConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [(inner bean)#3449a0f0] with key 'org.springframework.integration.config.RouterFactoryBean#1'; nested exception is javax.management.InstanceAlreadyExistsException: org.springframework.integration.router:name=org.springframework.integration.config.RouterFactoryBean#1,type=ErrorMessageExceptionTypeRouter
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1553) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:120) ~[spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691) ~[spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:320) ~[spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
      at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:142) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
      at org.springframework.boot.context.web.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:89) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
      at org.springframework.boot.context.web.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:51) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
      at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:175) [spring-web-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5444) [catalina.jar:7.0.50]
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:7.0.50]
      at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) [catalina.jar:7.0.50]
      at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) [catalina.jar:7.0.50]
      at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:634) [catalina.jar:7.0.50]
      at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1074) [catalina.jar:7.0.50]
      at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1858) [catalina.jar:7.0.50]
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [na:1.7.0_51]
      at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_51]
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_51]
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_51]
      at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51]
  Caused by: org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [(inner bean)#3449a0f0] with key 'org.springframework.integration.config.RouterFactoryBean#1'; nested exception is javax.management.InstanceAlreadyExistsException: org.springframework.integration.router:name=org.springframework.integration.config.RouterFactoryBean#1,type=ErrorMessageExceptionTypeRouter
      at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:609) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:534) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.jmx.export.MBeanExporter.afterPropertiesSet(MBeanExporter.java:416) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      ... 28 common frames omitted
  Caused by: javax.management.InstanceAlreadyExistsException: org.springframework.integration.router:name=org.springframework.integration.config.RouterFactoryBean#1,type=ErrorMessageExceptionTypeRouter
      at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) ~[na:1.7.0_51]
      at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) ~[na:1.7.0_51]
      at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) ~[na:1.7.0_51]
      at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) ~[na:1.7.0_51]
      at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) ~[na:1.7.0_51]
      at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) ~[na:1.7.0_51]
      at org.springframework.jmx.support.MBeanRegistrationSupport.doRegister(MBeanRegistrationSupport.java:195) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:662) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:599) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      ... 32 common frames omitted
  </code></pre>