Error Integrating Spring batch with spring-batch-admin-manager on Spring-boot

Question

I am trying to integrate spring-batch-admin-manager with spring-boot-starter-batch together using spring-boot embedded tomcat configuration.

However I am have this error trace which I cant nail down:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'batchConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.batch.core.configuration.annotation.StepBuilderFactory com.mycompany.notification.processor.service.batch.configuration.BatchConfiguration.steps; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'stepBuilders' defined in class path resource [org/springframework/batch/core/configuration/annotation/SimpleBatchConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.batch.core.configuration.annotation.StepBuilderFactory]: Factory method 'stepBuilders' threw exception; nested exception is java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$6da887a9 cannot be cast to org.springframework.batch.core.repository.JobRepository
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    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:762)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    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:321)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:961)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:950)
    at com.mycompany.notification.processor.service.main.Application.main(Application.java:27)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.batch.core.configuration.annotation.StepBuilderFactory com.mycompany.notification.processor.service.batch.configuration.BatchConfiguration.steps; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'stepBuilders' defined in class path resource [org/springframework/batch/core/configuration/annotation/SimpleBatchConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.batch.core.configuration.annotation.StepBuilderFactory]: Factory method 'stepBuilders' threw exception; nested exception is java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$6da887a9 cannot be cast to org.springframework.batch.core.repository.JobRepository
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:558)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 21 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'stepBuilders' defined in class path resource [org/springframework/batch/core/configuration/annotation/SimpleBatchConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.batch.core.configuration.annotation.StepBuilderFactory]: Factory method 'stepBuilders' threw exception; nested exception is java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$6da887a9 cannot be cast to org.springframework.batch.core.repository.JobRepository
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:602)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1111)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1006)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1127)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1051)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:530)
    ... 23 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.batch.core.configuration.annotation.StepBuilderFactory]: Factory method 'stepBuilders' threw exception; nested exception is java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$6da887a9 cannot be cast to org.springframework.batch.core.repository.JobRepository
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:591)
    ... 35 common frames omitted
Caused by: java.lang.ClassCastException: org.springframework.batch.core.repository.support.JobRepositoryFactoryBean$$EnhancerBySpringCGLIB$$6da887a9 cannot be cast to org.springframework.batch.core.repository.JobRepository
    at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$607a70b7.jobRepository(<generated>)
    at org.springframework.batch.core.configuration.annotation.AbstractBatchConfiguration.stepBuilders(AbstractBatchConfiguration.java:63)
    at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$607a70b7.CGLIB$stepBuilders$7(<generated>)
    at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$607a70b7$$FastClassBySpringCGLIB$$ac8c0a6a.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
    at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$607a70b7.stepBuilders(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
    ... 36 common frames omitted

This is my gradle build file:

buildscript {
    repositories {
        mavenCentral()
        maven { url 'http://repo.spring.io/milestone/' }
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.0.RELEASE")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'spring-boot'
apply plugin: 'war'

war {
    baseName = 'notification-processor-service'
    version = '1.0.0-SNAPSHOT'
}
jar {
    baseName = 'notification-processor-service'
    version = '1.0.0-SNAPSHOT'
}

ext {
    springIntegrationVersion = '4.1.1.RELEASE'
    springIntegrationKafkaVersion = '1.0.0.M2'
}

repositories {
    mavenCentral()
    maven {
        url 'https://repository.apache.org/content/groups/public'
    }
    maven { url 'http://repo.spring.io/milestone/' }
}

dependencies {
    compile("org.springframework.boot:spring-boot-starter-web")
    compile("org.springframework.boot:spring-boot-starter-batch:1.2.0.RELEASE")
    compile("org.springframework.boot:spring-boot-starter-actuator")
    compile("javax.inject:javax.inject:1")
    compile('org.springframework.batch:spring-batch-admin-manager:1.3.0.RELEASE') {
        exclude module: 'slf4j-log4j12'
    }
    //SI
    // compile("org.springframework.integration:spring-integration-core:$springIntegrationVersion")

    /* //kafka
     compile("org.springframework.integration:spring-integration-kafka:$springIntegrationKafkaVersion") {
         exclude module: 'log4j'
         exclude module: 'jms'
         exclude module: 'jmxtools'
         exclude module: 'jmxri'
     }*/
    testCompile("org.springframework.boot:spring-boot-starter-test")

}

task wrapper(type: Wrapper) {
    gradleVersion = '1.11'
}

I added those configurations as shown in this github example:

https://github.com/codecentric/spring-batch-admin-spring-boot

@Configuration
@ImportResource("classpath:/org/springframework/batch/admin/web/resources/servlet-config.xml")
public class ServletConfiguration {
}

 */
@Configuration
@ImportResource("classpath:/org/springframework/batch/admin/web/resources/webapp-config.xml")
public class WebappConfiguration {

}

this is my batchConfiguration class:

@EnableBatchProcessing
@Configuration
public class BatchConfiguration {

    private static final Logger logger = LoggerFactory.getLogger(BatchConfiguration.class);

    @Inject
    WriteToKafkaTasklet writeToKafkaTasklet;

    @Autowired
    private StepBuilderFactory steps;


    @Autowired
    private JobBuilderFactory jobs;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;


}

What am I missing?

Answer 1

A couple things here:

1. Don't use @EnableBatchProcessing with Spring Batch Admin. SBA provides a number of the components out of the box. If you're willing to use the latest and greatest, it provides everything @EnableBatchProcessing provides without using the annotation.
2. The stack trace you're getting is because @EnableBatchProcessing is registering a StepScope that uses dynamic subclassing, but Spring Batch Admin is also registering a StepScope that uses java proxies. As mentioned, remove @EnableBatchProcessing and that should remove your stack trace.

That being said, if you're using currently released components, once you remove the @EnableBatchProcessing, you'll need to manually configure the two builders it provides. Add the following XML to your override XML and you should be in business:

<bean id="jobBuilderFactory" class="org.springframework.batch.core.configuration.annotation.JobBuilderFactory">
    <constructor-arg ref="jobRepository"/>
</bean>

<bean id="stepBuilderFactory" class="org.springframework.batch.core.configuration.annotation.StepBuilderFactory">
    <constructor-arg index="0" ref="jobRepository"/>
    <constructor-arg index="1" ref="transactionManager"/>
</bean>

Keep your eye out for Spring Batch Admin 2.0. That will have all of what is discussed here built in. M1 should be coming out in the next couple weeks.