Spring Batch configuration exception

问题

I have next spring batch configuration class:

@Configuration
@EnableBatchProcessing
public class BatchJobConfiguration {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Bean
    public Step step1() {
        return stepBuilderFactory.get("step1")
                .tasklet(new Tasklet() {
                    public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) {
                        return null;
                    }
                })
                .build();
    }

    @Bean
    public Job job(Step step1) throws Exception {
        return jobBuilderFactory.get("job1")
                .incrementer(new RunIdIncrementer())
                .start(step1)
                .build();
    }
}

When I start my application I receive next exception:

Caused by: java.lang.ClassCastException: org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean$$EnhancerBySpringCGLIB$$65a19538 cannot be cast to org.springframework.batch.core.repository.JobRepository at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$14f7a80d.jobRepository() at org.springframework.batch.core.configuration.annotation.AbstractBatchConfiguration.jobBuilders(AbstractBatchConfiguration.java:58) at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$14f7a80d.CGLIB$jobBuilders$6() at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$$EnhancerBySpringCGLIB$$14f7a80d$$FastClassBySpringCGLIB$$c6b630d7.invoke() 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$$EnhancerBySpringCGLIB$$14f7a80d.jobBuilders() at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)

In pom.xml I have next dependency:

<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-batch</artifactId>
</dependency>

Thanks in advance.

回答1:

The JobRepository instance needs to be renamed, otherwise Spring context will find incorrect candidates for autowiring.

来源：https://stackoverflow.com/questions/32103284/spring-batch-configuration-exception

标签

java

Spring

spring-batch