java - 多个 RabbitMQ 应用程序

Question

我正在尝试在 tomcat 服务器上托管多个 spring boot 应用程序。但是，当我尝试启动服务器时，我发现了以下异常。问题与具有相同缓存工厂 ID 的多个 rabbitmq 队列有关。我尝试在 ...Application.class 中创建一个具有不同 id 的 ConnectionFactory bean，但应用程序构建失败。欢迎任何帮助。

org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [CachingConnectionFactory] with key 'rabbitConnectionFactory'; nested exception is javax.management.InstanceAlreadyExistsException: org.springframework.amqp.rabbit.connection:name=rabbitConnectionFactory,type=CachingConnectionFactory
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:628) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:550) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:432) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:781) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) ~[spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) ~[spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) ~[spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
at org.springframework.boot.web.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:151) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
at org.springframework.boot.web.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:131) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
at org.springframework.boot.web.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:86) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE]
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:169) [spring-web-4.3.8.RELEASE.jar:4.3.8.RELEASE]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5573) [catalina.jar:7.0.68]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) [catalina.jar:7.0.68]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) [catalina.jar:7.0.68]
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) [catalina.jar:7.0.68]
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) [catalina.jar:7.0.68]
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1259) [catalina.jar:7.0.68]
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1998) [catalina.jar:7.0.68]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_77]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_77]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_77]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_77]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_77]

Answer 1

如果您想继续使用 JMX，您可以在 application.properties 中为其分配一个唯一的 default-domain，如下所示:

spring.application.name=my-app
spring.jmx.default-domain=my-app-jmx

找到这个解决方案 here ，对我来说效果很好。可以找到属性的简要说明 here .