Is there a way to integrate spring-batch-admin and spring-boot properly?
java, spring, spring-batch, spring-batch-admin, spring-mvc
Solution
The short answer is that you won't want to use `@EnableBatchProcessing` with Spring Batch Admin. SBA provides a number of beans on a global scale that the `@EnableBatchProcessing` also provides. SBA 2.0 (currently in development) will probably fill the gaps between what is currently there and what `@EnableBatchProcessing` provides (specifically providing the `JobBuilderFactory` and `StepBuilderFactory`).
To get yourself running, you should be able to (I haven't tired this myself) configure in the `META-INF/spring/batch/override/` directory a `JobBuilderFactory` and a `StepBuilderFactory` for global use. From there, you can use XML files in the `META-INF/spring/batch/jobs` directory that do nothing more than component scan for your `@Configuration` classes. However, leave off the `@EnableBatchProcessing` because of the duplication of beans.
For the record, this isn't an Spring Boot issue since `@EnableBatchProcessing` is a Spring Batch annotation, not a Boot one.
Problem
According to the documentation spring batch admin is very easy to embed into the existing application. Simply copying web.xml and index.jsp then adding needed dependencies is enough getting it to work. But if I want to use it in an existing spring boot project it getting worse. According to this example the configuration is a bit hacky but it works. UNTIL I try to use `@EnableBatchProcessing` annotation in my configuriton bean. Then I get the following exception. ``` 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 ``` My configuration is quite simple I have two configuration beans ``` @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 { } ``` and ``` @Configuration @EnableBatchProcessing public class BatchImporterConfiguration { } ``` When I remove @EnableBatchProcessing and try to create jobs with JobBuilderFactory and use @StepScope annotation I'm getting other ClassCastExceptions. Now I'm using xml based configuration to create jobs, steps and other beans. It work well but I would actually preffer xml free configuration. Is there a way to easily integrate spring boot, spring batch and spring batch admin ?