報錯如下

org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [file:/F:/marketing/marketing-service/target/classes/dubbo/consumer-beans.xml]; nested exception is java.lang.IllegalStateException: Duplicate spring bean id promoCodeFacadeat org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:414) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromImportedResources(ConfigurationClassBeanDefinitionReader.java:354) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:143) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:116) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:320) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:228) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:272) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:92) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:687) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:525) ~[spring-context-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:124) ~[spring-boot-1.5.19.RELEASE.jar:1.5.19.RELEASE]at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) ~[spring-boot-1.5.19.RELEASE.jar:1.5.19.RELEASE]at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) ~[spring-boot-1.5.19.RELEASE.jar:1.5.19.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) ~[spring-boot-1.5.19.RELEASE.jar:1.5.19.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) ~[spring-boot-1.5.19.RELEASE.jar:1.5.19.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) ~[spring-boot-1.5.19.RELEASE.jar:1.5.19.RELEASE]at com.chaos.marketing.MarketingServiceApplication.main(MarketingServiceApplication.java:17) ~[classes/:?] Caused by: java.lang.IllegalStateException: Duplicate spring bean id promoCodeFacadeat com.alibaba.dubbo.config.spring.schema.DubboBeanDefinitionParser.parse(DubboBeanDefinitionParser.java:100) ~[dubbo-2.6.5.jar:2.6.5]at com.alibaba.dubbo.config.spring.schema.DubboBeanDefinitionParser.parse(DubboBeanDefinitionParser.java:417) ~[dubbo-2.6.5.jar:2.6.5]at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:74) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1410) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1400) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:172) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:142) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392) ~[spring-beans-4.3.22.RELEASE.jar:4.3.22.RELEASE]... 21 more

經排查是以為service 服務依賴了coupon服務，coupon 服務是PromoCodeFacade 的生產者，service 是PromoCodeFacade 消費者，Spring容器啟動的時候會加載依賴包和自身的dubbo配置，因此PromoCodeFacade 接口被加載了兩次，才會出現以上問題

總結

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