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java – 有没有办法正确地集成spring-batch-admin和spring-boot？

2019-10-06 16:20:01 作者：互联网

根据documentation春季批量管理员很容易嵌入到现有的应用程序中.只需复制web.xml和index.jsp,然后添加所需的依赖项就足以让它工作.

但是,如果我想在现有的春季启动项目中使用它,它会变得更糟.根据this example,配置有点hacky但它的工作原理.我尝试在配置bean中使用@EnableBatchProcessing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,我正在获取其他ClassCastExceptions.

现在我使用基于xml的配置来创建作业,步骤和其他bean.它运作良好但我实际上会提供xml免费配置.有没有办法轻松集成弹簧靴,弹簧批和弹簧批管理？

解决方法:

简短的回答是,您不希望在Spring Batch Admin中使用@EnableBatchProcessing. SBA在全球范围内提供了许多@EnableBatchProcessing也提供的bean. SBA 2.0(目前正在开发中)可能填补当前存在的空间和@EnableBatchProcessing提供的空白(特别是提供JobBuilderFactory和StepBuilderFactory).

为了让自己运行,你应该能够(我自己并没有厌倦)在META-INF / spring / batch / override /目录中配置一个JobBuilderFactory和一个StepBuilderFactory供全局使用.从那里,您可以在META-INF / spring / batch / jobs目录中使用XML文件,这些文件只对@Configuration类进行组件扫描.但是,由于bean的重复,请不要使用@EnableBatchProcessing.

对于记录,这不是Spring Boot问题,因为@EnableBatchProcessing是一个Spring Batch注释,而不是一个Boot.

标签：java,spring,spring-mvc,spring-batch,spring-batch-admin
来源： https://codeday.me/bug/20191006/1861404.html