Question

当我尝试使用StepExecutionContext在步骤之间共享数据时，我收到此错误。我非常喜欢这个框架所以我希望这是一个简单的问题，但据我所知，它必须在框架上，因为我不使用＆＃34; UnmodifiableMap＆＃34;任何地方。

如果有人碰到这个问题，那么分享解决方案会有很大帮助，谢谢。

bean的定义如下：

<bean id="Candidatos_itemProcessor" class="com.xxx.CandidatoProcessorTest" scope="step">
<property name="stepContext" value="#{stepExecutionContext}"/>

处理器的实现是：

public class CandidatoProcessorTest implements ItemProcessor<Candidato, Candidato> {

private ExecutionContext stepContext = null;
//other private xxx

public Candidato process(Candidato item) throws Exception {

    //some logic here
        stepContext.put("cod_situacion", cod_situacion);
        stepContext.put("des_situacion", des_situacion);
        stepContext.put("fec_situacion", fec_situacion);
    //other logic
    return item;
}

//a private aux method

public void setStepContext(ExecutionContext stepContext) {
    this.stepContext = stepContext;
}

}

错误的堆栈跟踪是：

严重：在作业XXXBatch中遇到执行步骤stepCandidatos的错误 org.springframework.beans.factory.BeanCreationException：使用name＆＃39; scopedTarget.Candidatos_itemProcessor＆＃39;创建bean时出错。在类路径资源[spring / batch / jobs / jobXXX.xml]中定义：bean的初始化失败;嵌套异常是org.springframework.beans.ConversionNotSupportedException：无法转换类型＆＃39; java.util.Collections $ UnmodifiableMap＆＃39;的属性值。要求的类型＆＃39; org.springframework.batch.item.ExecutionContext＆＃39; for property＆＃39; stepContext＆＃39 ;;嵌套异常是java.lang.IllegalStateException：无法将类型[java.util.Collections $ UnmodifiableMap]的值转换为所需的类型[org.springframework.batch.item.ExecutionContext]以获取属性＆＃39; stepContext＆＃39;：无匹配编辑或转换策略找到在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:547）在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:475） at org.springframework.beans.factory.support.AbstractBeanFactory $ 2.getObject（AbstractBeanFactory.java:343）在org.springframework.batch.core.scope.StepScope.get（StepScope.java:113）在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:338）在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:195）在org.springframework.aop.target.SimpleBeanTargetSource.getTarget（SimpleBeanTargetSource.java:35）在org.springframework.aop.framework.JdkDynamicAopProxy.invoke（JdkDynamicAopProxy.java:187）在com.sun.proxy。$ Proxy23.process（未知来源）在org.springframework.batch.core.step.item.SimpleChunkProcessor.doProcess（SimpleChunkProcessor.java:126）在org.springframework.batch.core.step.item.SimpleChunkProcessor.transform（SimpleChunkProcessor.java:293）在org.springframework.batch.core.step.item.SimpleChunkProcessor.process（SimpleChunkProcessor.java:192）在org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute（ChunkOrientedTasklet.java:75）在org.springframework.batch.core.step.tasklet.TaskletStep $ ChunkTransactionCallback.doInTransaction（TaskletStep.java:406）在org.springframework.batch.core.step.tasklet.TaskletStep $ ChunkTransactionCallback.doInTransaction（TaskletStep.java:330）在org.springframework.transaction.support.TransactionTemplate.execute（TransactionTemplate.java:133）在org.springframework.batch.core.step.tasklet.TaskletStep $ 2.doInChunkContext（TaskletStep.java:271）在org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration（StepContextRepeatCallback.java:81）在org.springframework.batch.repeat.support.RepeatTemplate.getNextResult（RepeatTemplate.java:374）在org.springframework.batch.repeat.support.RepeatTemplate.executeInternal（RepeatTemplate.java:215）在org.springframework.batch.repeat.support.RepeatTemplate.iterate（RepeatTemplate.java:144）在org.springframework.batch.core.step.tasklet.TaskletStep.doExecute（TaskletStep.java:257）在org.springframework.batch.core.step.AbstractStep.execute（AbstractStep.java:200）在org.springframework.batch.core.job.SimpleStepHandler.handleStep（SimpleStepHandler.java:148）在org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep（JobFlowExecutor.java:64）在org.springframework.batch.core.job.flow.support.state.StepState.handle（StepState.java:67）在org.springframework.batch.core.job.flow.support.SimpleFlow.resume（SimpleFlow.java:169）在org.springframework.batch.core.job.flow.support.SimpleFlow.start（SimpleFlow.java:144）在org.springframework.batch.core.job.flow.FlowJob.doExecute（FlowJob.java:134）在org.springframework.batch.core.job.AbstractJob.execute（AbstractJob.java:306）在org.springframework.batch.core.launch.support.SimpleJobLauncher $ 1.run（SimpleJobLauncher.java:135）在org.springframework.core.task.SyncTaskExecutor.execute（SyncTaskExecutor.java:50）在org.springframework.batch.core.launch.support.SimpleJobLauncher.run（SimpleJobLauncher.java:128）在com.XXX.Test.run（Test.java:32）在com.XXX.Test.main（Test.java:15）引起：org.springframework.beans.ConversionNotSupportedException：无法转换类型＆＃39; java.util.Collections $ UnmodifiableMap＆＃39;的属性值要求的类型＆＃39; org.springframework.batch.item.ExecutionContext＆＃39; for property＆＃39; stepContext＆＃39 ;;嵌套异常是java.lang.IllegalStateException：无法将类型[java.util.Collections $ UnmodifiableMap]的值转换为所需的类型[org.springframework.batch.item.ExecutionContext]以获取属性＆＃39; stepContext＆＃39;：无匹配编辑或转换策略找到在org.springframework.beans.BeanWrapperImpl.convertIfNecessary（BeanWrapperImpl.java:474）在org.springframework.beans.BeanWrapperImpl.convertForProperty（BeanWrapperImpl.java:511）在org.springframework.beans.BeanWrapperImpl.convertForProperty（BeanWrapperImpl.java:505）在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty（AbstractAutowireCapableBeanFactory.java:1502）在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory.java:1461）在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1197）在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:537） ......还有34个引起：java.lang.IllegalStateException：无法将类型[java.util.Collections $ UnmodifiableMap]的值转换为所需类型[org.springframework.batch.item.ExecutionContext]的属性＆＃39; stepContext＆＃39;：无匹配编辑或转换策略找到在org.springframework.beans.TypeConverterDelegate.convertIfNecessary（TypeConverterDelegate.java:267）在org.springframework.beans.BeanWrapperImpl.convertIfNecessary（BeanWrapperImpl.java:459） ......还有40多个 jun 28,2017 9:54:31 AM org.springframework.batch.core.launch.support.SimpleJobLauncher run 信息：作业：[FlowJob：[name = CertSeurBatch]]使用以下参数完成：[{}]和以下状态：[FAILED]

Answer 1

就我而言，问题是 tasklet 的配置是

@Bean
@StepScope
public MyTasklet createTasklet(@Value("#{jobExecutionContext}") ExecutionContext executionContext)

解决问题的是将其更改为

@Bean
@StepScope
public MyTasklet createTasklet(@Value("#{stepExecution.jobExecution.executionContext}") ExecutionContext executionContext)

这是一个迟到的答案，但希望它在未来对某人有所帮助。

使用的 Spring 组件版本：

<springframework.version>5.2.12.RELEASE</springframework.version>
<spring-integration.version>5.3.4.RELEASE</spring-integration.version>
<spring-batch-admin.version>1.3.1.RELEASE</spring-batch-admin.version>
<spring-batch.version>4.2.5.RELEASE</spring-batch.version>

无法转换类型＆＃39; java.util.Collections $ UnmodifiableMap＆＃39;的属性值要求的类型＆＃39; org.springframework.batch.item.ExecutionContext＆＃39;

1 个答案: