Spring Batch 실행시 발생하는 여러가지 에러 모음

A bean with that name has already been defined ~ 관련 오류

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APPLICATION FAILED TO START
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Description:
The bean 'sampleChunkJob', defined in class path resource [com/example/batchprocessing/SampleChunkJob.class], could not be registered. A bean with that name has already been defined in file [C:\sample-project\workspace-study\batch-processing\target\classes\com\example\batchprocessing\SampleChunkJob.class] and overriding is disabled.
Action:
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

원인 : 이미 다른곳에서 문제가 되는 bean을 생성해서 생긴 문제

해결 : application.properties에 spring.main.allow-bean-definition-overriding=true 추가로 해결

(해결책이 메세지에 명확하게 나와있음..)

 

 

factory-bean reference points back to the same bean definition ~ 관련 오류

org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'sampleTaskletJob' defined in class path resource [com/example/batchprocessing/SampleTaskletJob.class]: factory-bean reference points back to the same bean definition
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:721) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:681) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	

원인 : Class 이름과 job 이름이 동일해서 발생한 오류

해결 : Class 이름과 job 이름을 다르게 변경해준다. 

 

 

Consider marking one of the beans as @Primary ~ 관련 오류

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APPLICATION FAILED TO START
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Description:
Parameter 1 of method sampleChunkJob in com.example.batchprocessing.SampleChunk required a single bean, but 2 were found:
	- sampleChunkStep: defined by method 'sampleChunkStep' in class path resource [com/example/batchprocessing/SampleChunk.class]
	- sampleTaskletStep: defined by method 'sampleTaskletStep' in class path resource [com/example/batchprocessing/SampleTasklet.class]
Action:
Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed

원인 : Job sampleChunkJob(SampleJobListener jobListener, Step step)  이런식으로 Step step 으로 모호하게 정의를 해서 발생을 했다.

해결 : Job sampleChunkJob(SampleJobListener jobListener, Step sampleChunkStep) { 이렇게 명확하게 현재 내가 작성한 step의 bean name으로 정의해준다. 

 

 

EL1008E: Property or field 'jobParameters' cannot be found on object of type 오류

Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1008E: Property or field 'jobParameters' cannot be found on object of type 'org.springframework.beans.factory.config.BeanExpressionContext' - maybe not public or not valid?
	at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:217) ~[spring-expression-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:104) ~[spring-expression-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:91) ~[spring-expression-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	

원인 : jobParameter를 사용하는데 @StepScope or @JobScope를 사용하지 않아서 발생한 오류

해결 : jobParameters 사용하는 부분에 @StepScope or @JobScope 기입해준다. 

 

 

No context holder available for job (or step) scope 관련 오류

Caused by: java.lang.IllegalStateException: No context holder available for job scope
	at org.springframework.batch.core.scope.JobScope.getContext(JobScope.java:159) ~[spring-batch-core-4.2.1.RELEASE.jar:4.2.1.RELEASE]
	at org.springframework.batch.core.scope.JobScope.get(JobScope.java:92) ~[spring-batch-core-4.2.1.RELEASE.jar:4.2.1.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:356) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
	... 40 common frames omitted

원인 : 예를들면 reader에서 jobParameter를 사용하고 reader에 @StepScope를 붙였는데 jobParameter를 사용하지 않는 step에 @JobScope를 붙인 경우

해결 : step에 @JobScope를 제거해주고 jobParameter를 사용하는 곳에서만 @StepScope or @JobScope를 정의해준다. 

 

끝!