我创建了一个多文件阅读器和平面文件编写器（后来，我必须将它扩展到多文件读取到多个文件写入，一对一映射）。当我通过属性文件提供输入路径时，它运行良好，但是当我尝试通过jobExecutionContext提供路径时，它开始给我错误。让我感到惊讶的是，作家成功地从executionContext获取路径并编写我提供的任何位置而不是读者。
PS：我正在使用＆＃34; SingleItemPeekableItemReader＆＃34;因为我在文件中的数据是多行记录，无法确定一条记录何时结束。知道记录2已经开始的唯一方法是当你有权访问下一行并且你知道它是新记录的开始。
有人可以通过一些亮点，我做错了什么。
<bean id="itemReader" class="com.varun.reader.AccountDataReader">
<property name="fieldSetReader" ref="PeekableitemReader" />
<property name="headerFieldSetMapper" ref="headerFieldSetMapper" />
<property name="multiReader" ref="multiResourceReader"/>
</bean>
<bean id="PeekableitemReader" class="org.springframework.batch.item.support.SingleItemPeekableItemReader" >
<property name="delegate" ref="multiResourceReader"/>
</bean>
<bean id="multiResourceReader" class=" org.springframework.batch.item.file.MultiResourceItemReader" >
<property name="resources" value="file:${file.input.dir}*.DAT" />
<property name="delegate" ref="fileItemReader" />
</bean>
<bean id="fileItemReader" class="org.springframework.batch.item.file.FlatFileItemReader">
<property name="lineMapper">
<bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
<property name="lineTokenizer" ref="accountDataTokenizer"/>
<property name="fieldSetMapper">
<bean class="org.springframework.batch.item.file.mapping.PassThroughFieldSetMapper" />
</property>
</bean>
</property>
<property name="comments" value=""></property>
</bean>
当我在multiresourceReader中提供资源时，它出错了
<property name="resources" value="file:#{JobExecutionContext[input_dir]}*.DAT" />
错误记录如下：
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'step1': Cannot resolve reference to bean 'itemReader' while setting bean property 'itemReader'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemReader' defined in class path resource [spring/config/process-config.xml]: Cannot resolve reference to bean 'PeekableitemReader' while setting bean property 'fieldSetReader'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'PeekableitemReader' defined in class path resource [spring/config/process-config.xml]: Cannot resolve reference to bean 'multiResourceReader' while setting bean property 'delegate'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'multiResourceReader' defined in class path resource [spring/config/process-config.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Property or field 'JobExecutionContext' cannot be found on object of type 'org.springframework.beans.factory.config.BeanExpressionContext' - maybe not public?
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
将多重读取器范围作为步骤后，我收到如下错误。我已经尝试将范围放在所有其他委托读者上，但我得到了同样的错误。
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'step1': Cannot resolve reference to bean 'itemReader' while setting bean property 'itemReader'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemReader' defined in class path resource [spring/config/process-config.xml]: Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type [com.sun.proxy.$Proxy11 implementing org.springframework.batch.item.ItemStreamReader,org.springframework.batch.item.ItemStream,org.springframework.aop.scope.ScopedObject,java.io.Serializable,org.springframework.aop.framework.AopInfrastructureBean,org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised] to required type [org.springframework.batch.item.file.MultiResourceItemReader] for property 'multiReader'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [com.sun.proxy.$Proxy11 implementing org.springframework.batch.item.ItemStreamReader,org.springframework.batch.item.ItemStream,org.springframework.aop.scope.ScopedObject,java.io.Serializable,org.springframework.aop.framework.AopInfrastructureBean,org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised] to required type [org.springframework.batch.item.file.MultiResourceItemReader] for property 'multiReader': no matching editors or conversion strategy found
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753)
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 com.varun.JobScheduler.main(JobScheduler.java:9)
我的自定义阅读器
public class AccountDataReader implements ItemReader<AccountDataBO> {
private static Log log = LogFactory.getLog(AccountDataReader.class);
private boolean recordFinished;
private AccountDataBO acctObj = new AccountDataBO();
private SingleItemPeekableItemReader<FieldSet> fieldSetReader;
private HeaderFieldSetMapper headerFieldSetMapper;
private MultiResourceItemReader<FieldSet> multiReader;
@Override
public AccountDataBO read() throws Exception {
recordFinished = false;
while (!recordFinished) {
process(fieldSetReader.read());
}
AccountDataBO result = acctObj;
acctObj = new AccountDataBO();
return result;
}
private void process(FieldSet fieldSet) throws Exception {
if (fieldSet == null) {
log.debug("FINISHED Reading");
recordFinished = true;
acctObj=null;
return;
}
String lineId = fieldSet.readString(0);
if (!StringUtils.isEmpty(lineId) && lineId.contains(AccountDataBO.ACCOUNT)) {
log.debug("Starting new Record");
acctObj.setHeader(headerFieldSetMapper.mapFieldSet(fieldSet));
acctObj.setResource(multiReader.getCurrentResource());
}
//Code
}
private void CheckEOFNewAccount() throws Exception {
if ((fieldSetReader.peek() != null
&& ((fieldSetReader.peek().getValues())[0].contains(AccountDataBO.ACCOUNT)))
|| fieldSetReader.peek() == null) {
log.debug("Next Line is Account or EOF Hence returning for current Account");
recordFinished = true;
return;
}
}
public void setFieldSetReader(SingleItemPeekableItemReader<FieldSet> fieldSetReader) {
this.fieldSetReader = fieldSetReader;
}
public void setHeaderFieldSetMapper(HeaderFieldSetMapper headerFieldSetMapper) {
this.headerFieldSetMapper = headerFieldSetMapper;
}
public void setMultiReader(MultiResourceItemReader<FieldSet> multiReader) {
this.multiReader = multiReader;
}
}
答案 0 :(得分：4)
为了将作业参数注入批处理组件，组件需要采用步骤范围。所以在你的例子中，改变这个：
authserver对此：
var tour = {
id: "businesstour-hopscotch",
steps: [
{
title: "Welcome",
content: "This is the new business profile page, click next to have a quick tour.",
target: document.querySelector('#companyname'),
placement: "right",
xOffset: -380,
yOffset: 52,
onClose: function() {
window.location = '/';
}
},