我正在尝试运行我的应用程序时遇到错误。我正在使用spring批量修补来运行多个job的线程。我得到的异常是步骤名称是bean的实例化失败;嵌套异常是java.lang.IllegalStateException：没有在bean定义上指定bean类。请建议我任何一个。
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'Step': Instantiation of bean failed; nested exception is java.lang.IllegalStateException: No bean class specified on bean definition
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1071)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1016)
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:300)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:296)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:660)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at john.deere.com.PartApp.runTest(PartApp.java:18)
at john.deere.com.PartApp.main(PartApp.java:13)
Caused by: java.lang.IllegalStateException: No bean class specified on bean definition
at org.springframework.beans.factory.support.AbstractBeanDefinition.getBeanClass(AbstractBeanDefinition.java:354)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:66)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1064)
... 14 more
是
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:batch="http://www.springframework.org/schema/batch"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd
http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<context:component-scan base-package="john.deere.com" />
<import resource="applicationContext.xml"/>
<import resource="ApplicationDB.xml"/>
<job id="partitionJob" xmlns="http://www.springframework.org/schema/batch">
<!-- master step, 10 threads (grid-size) -->
<step id="Step">
<partition step="slave" partitioner="rangePart">
<handler grid-size="10" task-executor="taskExecutor" />
</partition>
</step>
<step id="slave" xmlns="http://www.springframework.org/schema/batch">
<tasklet>
<chunk reader="itemReader" processor="itemProcessor" writer="itemWriter" commit-interval="1" />
</tasklet>
</step>
</job>
<bean id="rangePart" class="john.deere.com.PartitionerEx" />
<bean id="taskExecutor" class="org.springframework.core.task.SimpleAsyncTaskExecutor" />
<bean id="itemProcessor" class="john.deere.com.EmpProcessor"
scope="step">
<property name="threadName" value="#{stepExecutionContext[name]}" />
</bean>
<!-- csv file writer -->
<bean id="itemWriter" class="org.springframework.batch.item.file.FlatFileItemWriter"
scope="step" >
<property name="resource"
value="file:csv/outputs/employee.processed#{stepExecutionContext[fromId]}-#{stepExecutionContext[toId]}.csv" />
<!-- <property name="appendAllowed" value="false" /> -->
<property name="lineAggregator">
<bean
class="org.springframework.batch.item.file.transform.DelimitedLineAggregator">
<property name="delimiter" value="," />
<property name="fieldExtractor">
<bean
class="org.springframework.batch.item.file.transform.BeanWrapperFieldExtractor">
<property name="names" value="id, name, age, salarey, address" />
</bean>
</property>
</bean>
</property>
</bean>
<bean id="itemReader"
class="org.springframework.batch.item.database.JdbcPagingItemReader"
scope="step">
<property name="dataSource" ref="dataSource" />
<property name="queryProvider">
<bean
class="org.springframework.batch.item.database.support.SqlPagingQueryProviderFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="selectClause" value="select id, name, age, salary, address" />
<property name="fromClause" value="from employee" />
<property name="whereClause">
<value>
<![CDATA[
where id >= :fromId and id <= :toId
]]>
</value>
</property>
<property name="sortKey" value="id" />
</bean>
</property>
<!-- Inject via the ExecutionContext in rangePartitioner -->
<property name="parameterValues">
<map>
<entry key="fromId" value="#{stepExecutionContext[fromId]}" />
<entry key="toId" value="#{stepExecutionContext[toId]}" />
</map>
</property>
<property name="pageSize" value="10" />
<property name="rowMapper">
<bean class="john.deere.com.EmpRowMapper" />
</property>
</bean>
</beans>
答案 0 :(得分：0)
您步骤奴隶是在作业标签之外定义的。这看起来不正确
...
</step>
</job>
<step id="slave" xmlns="http://www.springframework.org/schema/batch">
<tasklet>
...