報錯信息:org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'myMessage' defined in com.canvas.order.message.StreamClient: bean definition with this name already exists - Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=com.canvas.order.message.StreamClient; factoryMethodName=output; initMethodName=null; destroyMethodName=null at org.springframework.cloud.stream.binding.BindingBeanDefinitionRegistryUtils.registerBindingTargetBeanDefinition(BindingBeanDefinitionRegistryUtils.java:64) ~[spring-cloud-stream-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.cloud.stream.binding.BindingBeanDefinitionRegistryUtils.registerInputBindingTargetBeanDefinition(BindingBeanDefinitionRegistryUtils.java:47) ~[spring-cloud-stream-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.cloud.stream.binding.BindingBeanDefinitionRegistryUtils.lambda$registerBindingTargetBeanDefinitions$0(BindingBeanDefinitionRegistryUtils.java:80) ~[spring-cloud-stream-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.cloud.stream.binding.BindingBeanDefinitionRegistryUtils$$Lambda$284/4009390.doWith(Unknown Source) ~[na:na] at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:562) ~[spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) ~[spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.cloud.stream.binding.BindingBeanDefinitionRegistryUtils.registerBindingTargetBeanDefinitions(BindingBeanDefinitionRegistryUtils.java:76) ~[spring-cloud-stream-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.cloud.stream.config.BindingBeansRegistrar.registerBeanDefinitions(BindingBeansRegistrar.java:45) ~[spring-cloud-stream-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.lambda$loadBeanDefinitionsFromRegistrars$1(ConfigurationClassBeanDefinitionReader.java:358) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader$$Lambda$168/16845808.accept(Unknown Source) ~[na:na] at java.util.LinkedHashMap.forEach(LinkedHashMap.java:676) ~[na:1.8.0_45] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:357) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:145) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:117) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:328) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:233) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:93) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:694) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at com.canvas.order.OrderApplication.main(OrderApplication.java:14) [classes/:na]com.canvas.order.message.StreamClient? ? 類：????public?interface?StreamClient?{ ????@Input("myMessage") ????SubscribableChannel?input(); ????@Output("myMessage") ????MessageChannel?output(); }