Question

但是我收到了与jobRepository相关的以下错误。

我已经读过jobRepository在创建作业时是强制性的，但我不知道它为什么没有被创建。我按照教程加载了所有依赖项。

有人可以帮我指出正确的方向吗？提前谢谢。

Jun 03, 2017 8:13:18 PM 
    org.springframework.context.support.AbstractApplicationContext 
    prepareRefresh
    INFO: Refreshing 
    org.springframework.context.support.ClassPathXmlApplicationContext@579bb367: 
    startup date [Sat Jun 03 20:13:18 AEST 2017]; root of context hierarchy
    Jun 03, 2017 8:13:18 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [spring/batch/jobs/job-hello-world.xml]
Jun 03, 2017 8:13:18 PM org.springframework.beans.factory.support.DefaultListableBeanFactory registerBeanDefinition
INFO: Overriding bean definition for bean 'helloWorldJob': replacing [Generic bean: class [org.springframework.batch.core.configuration.xml.SimpleFlowFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null] with [Generic bean: class [org.springframework.batch.core.configuration.xml.JobParserJobFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null]
Jun 03, 2017 8:13:18 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@3532ec19: defining beans [report,itemProcessor,org.springframework.batch.core.scope.internalStepScope,org.springframework.beans.factory.config.CustomEditorConfigurer,org.springframework.batch.core.configuration.xml.CoreNamespacePostProcessor,step1,helloWorldJob,cvsFileItemReader,xmlItemWriter,reportMarshaller]; root of factory hierarchy
Jun 03, 2017 8:13:18 PM org.springframework.oxm.jaxb.Jaxb2Marshaller createJaxbContextFromClasses
INFO: Creating JAXBContext with classes to be bound [class com.mkyong.model.Report]
Jun 03, 2017 8:13:18 PM org.springframework.beans.factory.support.DefaultSingletonBeanRegistry destroySingletons
INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@3532ec19: defining beans [report,itemProcessor,org.springframework.batch.core.scope.internalStepScope,org.springframework.beans.factory.config.CustomEditorConfigurer,org.springframework.batch.core.configuration.xml.CoreNamespacePostProcessor,step1,helloWorldJob,cvsFileItemReader,xmlItemWriter,reportMarshaller]; root of factory hierarchy
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'step1': Cannot resolve reference to bean 'jobRepository' while setting bean property 'jobRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'jobRepository' is defined
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:329)
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1134)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:608)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)
    at com.mkyong.App.main(App.java:18)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'jobRepository' is defined
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:568)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1102)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:278)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:323)
    ... 15 more

Process finished with exit code 1

Answer 1

首先，这似乎是一个太复杂的类别教程 - ＆＃34; Hello World＆＃34;。

其次，如果你现在开始，你不应该使用基于XML的配置 - 使用基于注释的配置，除非你有非常令人信服的理由这样做 - 找到一个基于Java配置的教程。

关于你的错误，如果你在那个教程中，在context.xml中，他正在定义存储库，

<!-- stored job-meta in memory -->
    <!--
    <bean id="jobRepository"
        class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
        <property name="transactionManager" ref="transactionManager" />
    </bean>
     -->

     <!-- stored job-meta in database -->
    <bean id="jobRepository"
        class="org.springframework.batch.core.repository.support.JobRepositoryFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="transactionManager" ref="transactionManager" />
        <property name="databaseType" value="mysql" />
    </bean>

您没有显示任何代码，因此我无法确定您所缺少的内容。

如果您没有使用任何数据库，请使用已注释掉的bean - MapJobRepositoryFactoryBean，但您必须确保某些内存数据库（如HSQL，H2）位于类路径中。这些依赖关系不存在。

如果你有一个mysql数据库，请使用现有的bean，如context.xml所示，并包含mysql依赖项。

Spring Batch Hello World

1 个答案: