现在有两个spring boot的maven项目，需要部署到同一个外部的服务上（tomcat），他们都包含spring-boot-starter-actuator（健康检查）的依赖，但是出现下面的异常
我有多个spring引导应用程序（maven项目），其中包含“spring-boot-starter-actuator”依赖项，用于检查每个应用程序的运行状况。在tomcat服务器中部署这两个应用程序时，我会得到以下异常
2016-05-02 22:30:44.627 ERROR 12734 --- [ost-startStop-3] o.s.b.a.e.jmx.EndpointMBeanExporter : Could not register MBean for endpoint [dumpEndpoint] org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [org.springframework.boot.actuate.endpoint.jmx.DataEndpointMBean@67e7c413] with key 'dumpEndpoint'; nested exception is javax.management.InstanceAlreadyExistsException: org.springframework.boot:type=Endpoint,name=dumpEndpoint at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:625) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.boot.actuate.endpoint.jmx.EndpointMBeanExporter.registerEndpoint(EndpointMBeanExporter.java:182) [spring-boot-actuator-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.actuate.endpoint.jmx.EndpointMBeanExporter.locateAndRegisterEndpoints(EndpointMBeanExporter.java:162) [spring-boot-actuator-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.actuate.endpoint.jmx.EndpointMBeanExporter.doStart(EndpointMBeanExporter.java:153) [spring-boot-actuator-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.actuate.endpoint.jmx.EndpointMBeanExporter.start(EndpointMBeanExporter.java:276) [spring-boot-actuator-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:173) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:851) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:140) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:347) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:295) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.context.web.SpringBootServletInitializer.run(SpringBootServletInitializer.java:149) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.context.web.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:129) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.boot.context.web.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:85) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:175) [spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5155) [catalina.jar:8.0.21] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.0.21] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) [catalina.jar:8.0.21] at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) [catalina.jar:8.0.21] at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) [catalina.jar:8.0.21] at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:940) [catalina.jar:8.0.21] at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1738) [catalina.jar:8.0.21] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0] at java.lang.Thread.run(Thread.java:744) [na:1.8.0] Caused by: javax.management.InstanceAlreadyExistsException: org.springframework.boot:type=Endpoint,name=dumpEndpoint at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) ~[na:1.8.0] at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) ~[na:1.8.0] at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) ~[na:1.8.0] at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) ~[na:1.8.0] at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) ~[na:1.8.0] at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) ~[na:1.8.0] at org.springframework.jmx.support.MBeanRegistrationSupport.doRegister(MBeanRegistrationSupport.java:195) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:678) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:621) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] ... 32 common frames omitted
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解决办法
需要为每个项目配置JMX的域，修改application.properties中的属性spring.jmx.default-domain = applicationname
您可以在application.properties中使用以下属性为每个应用程序配置JMX域（例如，使用应用程序名称作为域）：
spring.jmx.default-domain=applicationname
这为Spring添加的所有JMX端点配置了域。
endpoints.jmx.domain=applicationname
这仅为执行器端点配置JMX域。
然后这将防止在不同的应用程序中使用相同名称的JMX bean冲突，因为该域将被添加到JMX名称中。