我也通过以下链接： Spring Bean Inheritance Using Annotations Bean reference back issue 和其他链接，但它仍未解决我的问题。
我正在研究Spring Boot Batch示例。在此示例中，出现以下错误-
org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'employeesJob' defined in class path resource [com/prateek/job/EmployeesJob.class]: factory-bean reference points back to the same bean definition
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:703) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:667) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:635) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1489) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1012) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.requiresEagerInitForType(DefaultListableBeanFactory.java:498) [spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:418) [spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:390) [spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:189) [spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:710) [spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:535) [spring-context-5.0.7.RELEASE.jar:5.0.7.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.prateek.SpringBatchClassicDbApplication.main(SpringBatchClassicDbApplication.java:10) [classes/:na]
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceInitializerPostProcessor': Unsatisfied dependency expressed through field 'beanFactory'; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'employeesJob' defined in class path resource [com/prateek/job/EmployeesJob.class]: factory-bean reference points back to the same bean definition
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:587) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1350) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:580) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:226) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:710) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:535) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.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.prateek.SpringBatchClassicDbApplication.main(SpringBatchClassicDbApplication.java:10) [classes/:na]
EmployeesJob.java
@Configuration
@EnableBatchProcessing
public class EmployeesJob {
@Autowired
private JobBuilderFactory jobBuilderFactory;
@Autowired
private StepBuilderFactory stepBuilderFactory;
@Autowired
private DataSource dataSource;
@Bean
public EmployeesProcessor employeesProcessor() {
return new EmployeesProcessor();
}
@Bean
public JdbcCursorItemReader<Employees> employeeReader1(){
JdbcCursorItemReader<Employees> itemReader = new JdbcCursorItemReader<>();
itemReader.setDataSource(dataSource);
itemReader.setSql("SELECT employeeNumber, lastName, firstName, extension, email, officeCode, reportsTo, jobTitle FROM employees");
itemReader.setRowMapper(new EmployeeMapper());
itemReader.setFetchSize(200);
return itemReader;
}
@Bean
public FlatFileItemWriter<Employees> employeeWriter(){
FlatFileItemWriter<Employees> fileItemWriter = new FlatFileItemWriter<>();
fileItemWriter.setResource(new FileSystemResource("csv/employees.csv"));
BeanWrapperFieldExtractor<Employees> fieldExtractor = new BeanWrapperFieldExtractor<>();
fieldExtractor.setNames(new String[] {"employeeNumber", "lastName", "firstName", "extension", "email", "officeCode", "reportsTo", "jobTitle"});
DelimitedLineAggregator<Employees> lineAggregator = new DelimitedLineAggregator<>();
lineAggregator.setDelimiter(",");
lineAggregator.setFieldExtractor(fieldExtractor);
fileItemWriter.setLineAggregator(lineAggregator);
fileItemWriter.setShouldDeleteIfEmpty(true);
return fileItemWriter;
}
@Bean
public Step step1() {
return stepBuilderFactory.get("step1")
.<Employees, Employees>chunk(10)
.reader(employeeReader1())
.processor(new EmployeesProcessor())
.writer(employeeWriter())
.build();
}
@Bean
public Job employeesJob() {
return jobBuilderFactory.get("employeesJob")
.incrementer(new RunIdIncrementer())
.flow(step1())
.end()
.build();
}
}
application.properties
spring.datasource.url=jdbc:mysql://localhost:3306/classicmodels
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=root
# SPRING BATCH (BatchProperties)
# Execute all Spring Batch jobs in the context on startup.
#spring.batch.job.enabled=true
# LOGGING
logging.level.org.springframework=DEBUG
logging.level.org.springframework.boot.autoconfigure=ERROR
EmployeeProcessor
public class EmployeesProcessor implements ItemProcessor<Employees, Employees>{
@Override
public Employees process(Employees employees) throws Exception {
return employees;
}
}
答案 0 :(得分：1)
最后，我能够解决此问题。您不能给jobName和className完全一样employeesJob（）。我现在更改了工作名称及其工作正常。