问题描述
简短的答案是您不想@EnableBatchProcessing与Spring Batch Admin
一起使用。SBA在全球范围内@EnableBatchProcessing还提供了许多Bean 。SBA
2.0（当前正在开发中）可能会填补当前@EnableBatchProcessing提供的内容JobBuilderFactory与提供的内容（特别是andStepBuilderFactory）之间的空白。
为了使自己运行，您应该能够（ 我自己还不厌倦 ）在Meta-INF/spring/batch/override/目录aJobBuilderFactory和a中StepBuilderFactory进行配置以供全局使用。从那里，您可以使用目录中的XML文件，该文件Meta-
INF/spring/batch/jobs只不过是对@Configuration类进行组件扫描。但是，@EnableBatchProcessing由于重复了bean
，请不要使用。
记录下来，这不是Spring Boot问题，因为@EnableBatchProcessing它是Spring Batch批注，而不是Boot。
解决方法
根据文档， spring
batch admin非常容易嵌入到现有应用程序中。只需复制web.xml和index.jsp，然后添加所需的依赖项就足以使其正常工作。
但是，如果我想在现有的Spring
Boot项目中使用它，那就越来越糟了。根据此示例，配置有些麻烦，但是可以使用。直到我尝试@EnableBatchProcessing在我的configuriton
bean中使用注释。然后我得到以下异常。
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jobBuilders' defined in class path resource [org/springframework/batch/core/configuration/annotation/SimpleBatchConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.batch.core.configuration.annotation.JobBuilderFactory org.springframework.batch.core.configuration.annotation.AbstractBatchConfiguration.jobBuilders() throws java.lang.Exception] threw exception; nested exception is java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$49fa0273 cannot be cast to org.springframework.batch.core.repository.JobRepository
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:597)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1095)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:990)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:706)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:762)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:109)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:952)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:941)
at demo.Application.main(Application.java:35)
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.batch.core.configuration.annotation.JobBuilderFactory org.springframework.batch.core.configuration.annotation.AbstractBatchConfiguration.jobBuilders() throws java.lang.Exception] threw exception; nested exception is java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$49fa0273 cannot be cast to org.springframework.batch.core.repository.JobRepository
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:188)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:586)
... 17 more
Caused by: java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$49fa0273 cannot be cast to org.springframework.batch.core.repository.JobRepository
at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$b5c6eb04.jobRepository(<generated>)
at org.springframework.batch.core.configuration.annotation.AbstractBatchConfiguration.jobBuilders(AbstractBatchConfiguration.java:58)
at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$b5c6eb04.CGLIB$jobBuilders$8(<generated>)
at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$b5c6eb04$$FastClassBySpringCGLIB$$d88bd05f.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:312)
at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$b5c6eb04.jobBuilders(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166)
... 18 more
我的配置非常简单，我有两个配置bean
@Configuration
@ImportResource({"classpath:/org/springframework/batch/admin/web/resources/servlet-config.xml","classpath:/org/springframework/batch/admin/web/resources/webapp-config.xml"})
public class BatchAdminConfiguration {
}
和
@Configuration
@EnableBatchProcessing
public class BatchImporterConfiguration {
}
当我删除@EnableBatchProcessing并尝试使用JobBuilderFactory创建作业并使用@StepScope注释时，我得到了其他ClassCastExceptions。
现在，我正在使用基于xml的配置来创建作业，步骤和其他bean。它工作正常，但实际上我会提供xml免费配置。有没有一种方法可以轻松集成spring
boot，spring batch和spring batch admin？