我正在尝试将Spring Batch作业升级到Spring Boot2.1.x。 我有使用“作业”范围的bean。升级后出现错误 Bean ...，无法注册。已经定义了具有该名称的bean ...并且禁止覆盖。
我可以设置属性 spring.main.allow-bean-definition-overriding = true 并克服错误。
我的问题是，如果我使用Job或Step范围，是否总是需要设置此属性？
完整错误消息：
Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name 'reportWriterListener' defined in BeanDefinition defined in class path resource [jobs/base_config.xml]: Cannot register bean definition [Root bean: class [org.springframework.aop.scope.ScopedProxyFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in BeanDefinition defined in class path resource [jobs/base_config.xml]] for bean 'reportWriterListener': There is already [Generic bean: class [com.zionsbancorp.spring.batch.batch.ReportWriterJobListener]; scope=job; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=false; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in class path resource [jobs/base_config.xml]] bound.
堆栈跟踪：
org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name 'reportWriterListener' defined in BeanDefinition defined in class path resource [jobs/base_config.xml]: Cannot register bean definition [Root bean: class [org.springframework.aop.scope.ScopedProxyFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in BeanDefinition defined in class path resource [jobs/base_config.xml]] for bean 'reportWriterListener': There is already [Generic bean: class [com.zionsbancorp.spring.batch.batch.ReportWriterJobListener]; scope=job; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=false; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in class path resource [jobs/base_config.xml]] bound.
at org.springframework.beans.factory.support.DefaultListableBeanFactory.registerBeanDefinition(DefaultListableBeanFactory.java:897) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.batch.core.scope.BatchScopeSupport.createScopedProxy(BatchScopeSupport.java:159) ~[spring-batch-core-4.1.2.RELEASE.jar:4.1.2.RELEASE]
at org.springframework.batch.core.scope.BatchScopeSupport.postProcessBeanFactory(BatchScopeSupport.java:130) ~[spring-batch-core-4.1.2.RELEASE.jar:4.1.2.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:286) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:174) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:705) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at com.zbc.zci.aspirercif.Application.main(Application.java:48) [classes/:na]
配置代码段
<bean id="reportWriterListener" class="com.zbc.spring.batch.batch.ReportWriterJobListener" scope="job">
<constructor-arg value="${report.file}"/>
</bean>