java.lang.IllegalStateException：Marshaller 必须支持编组对象的类

Question

我在 spring-boot 应用程序中使用spring batch 。 Spring Boot 版本是2.3.3.RELEASE 。 我有一个复杂的 XML，其中包含header （文件信息）和body （交易列表）。 我使用XJC tool从XSD获取 java 类。

为了重现这个错误，我在Github spring-batch-xml-to-xml上添加了代码

我需要做的是：我必须读取（ unmarshal ）XML，对正文中的business logic on each transaction element执行一些business logic on each transaction element ，然后最后编写（ marshal ）具有相同标题和更新正文的 XML 文件。

当我尝试编组子元素对象时，我收到IllegalStateException: Marshaller must support the class of the marshalled object。

示例 XML 文件

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<reportFile xmlns="http://deutsche-boerse.com/DBRegHub" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://deutsche-boerse.com/DBRegHub regulatoryHubUpload_MiFIR_001.60.xsd">
    <fileInformation>
        <sender>11003220</sender>
        <timestamp>2020-12-23T09:05:34Z</timestamp>
        <environment>LOCAL</environment>
        <version>1.0</version>
    </fileInformation>
    <record>
        <transaction>
        </transaction>
        <transaction>
        </transaction>
        <transaction>
        </transaction>
    </record>
</reportFile>

Spring批量配置

 package com.trax.europeangateway.config; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Map; import org.springframework.batch.core.Job; import org.springframework.batch.core.Step; import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing; import org.springframework.batch.core.configuration.annotation.JobBuilderFactory; import org.springframework.batch.core.configuration.annotation.JobScope; import org.springframework.batch.core.configuration.annotation.StepBuilderFactory; import org.springframework.batch.core.configuration.annotation.StepScope; import org.springframework.batch.core.launch.JobLauncher; import org.springframework.batch.core.launch.support.RunIdIncrementer; import org.springframework.batch.core.launch.support.SimpleJobLauncher; import org.springframework.batch.core.repository.JobRepository; import org.springframework.batch.item.ExecutionContext; import org.springframework.batch.item.ItemProcessor; import org.springframework.batch.item.ItemStreamReader; import org.springframework.batch.item.support.CompositeItemProcessor; import org.springframework.batch.item.support.CompositeItemWriter; import org.springframework.batch.item.xml.StaxEventItemWriter; import org.springframework.batch.item.xml.builder.StaxEventItemReaderBuilder; import org.springframework.batch.repeat.RepeatStatus; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.io.FileSystemResource; import org.springframework.core.io.Resource; import org.springframework.core.task.TaskExecutor; import org.springframework.oxm.jaxb.Jaxb2Marshaller; import org.springframework.oxm.xstream.XStreamMarshaller; import org.springframework.util.ClassUtils; import org.springframework.web.client.RestTemplate; import com.trax.europeangateway.itemprocessor.omegaxml.PIExtractorItemProcessor; import com.trax.europeangateway.itemprocessor.omegaxml.PIRemoverItemProcessor; import com.trax.europeangateway.itemwriter.omegaxml.EdsClientItemWriter; import com.trax.europeangateway.itemwriter.omegaxml.ExtendedStaxEventItemWriter; import com.trax.europeangateway.itemwriter.omegaxml.OmegaXmlFileWriter; import com.trax.europeangateway.itemwriter.omegaxml.OmegaXmlFooterCallBack; import com.trax.europeangateway.itemwriter.omegaxml.OmegaXmlHeaderCallBack; import com.trax.europeangateway.listener.JobResultListener; import com.trax.europeangateway.listener.StepResultListener; import com.trax.europeangateway.model.dto.FileInformationHeaderDto; import com.trax.europeangateway.model.dto.ProcessorWriterDto; import com.trax.europeangateway.model.dto.xsd.omega.TransactionPositionReport; import com.trax.europeangateway.service.ExtractHeaderOmegaXml; import com.trax.europeangateway.util.FileUtils; import lombok.extern.slf4j.Slf4j; @Slf4j @Configuration @EnableBatchProcessing public class BatchConfiguration { @Autowired PIExtractorItemProcessor pIExtractorItemProcessor; @Autowired StepResultListener stepResultListener; @Autowired JobBuilderFactory jobBuilderFactory; @Autowired StepBuilderFactory stepBuilderFactory; @Autowired private FileUtils fileUtils; @Qualifier("europeanGatewayJobExecutor") @Autowired private TaskExecutor taskExecutor; @Value( "${eugateway.batch.chunk.size}" ) private int chunkSize; @Qualifier("euGatewayJobLauncher") @Bean public JobLauncher euGatewayJobLauncher(JobRepository jobRepository) throws Exception { SimpleJobLauncher jobLauncher = new SimpleJobLauncher(); jobLauncher.setJobRepository(jobRepository); jobLauncher.setTaskExecutor(taskExecutor); jobLauncher.afterPropertiesSet(); return jobLauncher; } @JobScope @Bean (name = "extractHeaderStep") public Step extractHeaderStep(StepBuilderFactory steps , @Value("#{jobParameters['file.path']}") String path) { return steps.get("extractHeaderStep") .tasklet((contribution, chunkContext) -> { FileInformationHeaderDto fileInformation = new ExtractHeaderOmegaXml().readHeader(path); ExecutionContext jobExecutionContext = chunkContext.getStepContext().getStepExecution().getJobExecution().getExecutionContext(); jobExecutionContext.put("file.information", fileInformation); return RepeatStatus.FINISHED; }).build(); } @JobScope @Bean (name = "extractAndReplacePersonalDataStep") public Step jobStep(ItemStreamReader<TransactionPositionReport> reader, CompositeItemProcessor<TransactionPositionReport, ProcessorWriterDto> processor, CompositeItemWriter<ProcessorWriterDto> writer, StepBuilderFactory stepBuilderFactory) { return stepBuilderFactory.get("extractAndReplacePersonalDataStep") .<TransactionPositionReport, ProcessorWriterDto>chunk(chunkSize) .reader(reader) .processor(processor) .writer(writer) .listener(stepResultListener) .build(); } @Qualifier("omegaXmlJob") @Bean public Job extractPersonalDataJob(Step extractHeaderStep, Step extractAndReplacePersonalDataStep, JobResultListener jobListener, JobBuilderFactory jobBuilderFactory) { return jobBuilderFactory.get("extractAndReplacePersonalDataJob") .incrementer(new RunIdIncrementer()) .start(extractHeaderStep) .next(extractAndReplacePersonalDataStep) .listener(jobListener) .build(); } @Bean @StepScope public ItemStreamReader<TransactionPositionReport> itemReader(@Value("#{jobParameters['file.path']}") String path) { Jaxb2Marshaller transactionMarshaller = new Jaxb2Marshaller(); transactionMarshaller.setMappedClass(TransactionPositionReport.class); transactionMarshaller.setPackagesToScan(ClassUtils.getPackageName(TransactionPositionReport.class)); transactionMarshaller.setSupportJaxbElementClass(true); transactionMarshaller.setSupportDtd(true); log.debug("Generating StaxEventItemReader"); return new StaxEventItemReaderBuilder<TransactionPositionReport>() .name("transactionPositionReport") .resource(new FileSystemResource(path)) .addFragmentRootElements("transaction") .unmarshaller(transactionMarshaller) .build(); } @Bean @JobScope OmegaXmlHeaderCallBack getOmegaXmlHeaderCallBack(@Value("#{jobExecutionContext['file.information']}") FileInformationHeaderDto fileInformation){ return new OmegaXmlHeaderCallBack(fileInformation); } @Bean OmegaXmlFooterCallBack getOmegaXmlFooterCallBack(){ return new OmegaXmlFooterCallBack(); } @StepScope @Bean(name = "staxTransactionWriter") public StaxEventItemWriter<TransactionPositionReport> staxTransactionItemWriter(OmegaXmlHeaderCallBack omegaXmlHeaderCallBack, @Value("#{jobParameters['file.path']}") String path, @Value("#{jobParameters['submission.account']}") String submissionAccount) { Resource exportFileResource = new FileSystemResource(fileUtils.getOutputFilePath(path, submissionAccount)); Jaxb2Marshaller marshaller = new Jaxb2Marshaller(); marshaller.setSupportJaxbElementClass(true); marshaller.setClassesToBeBound(TransactionPositionReport.class); HashMap<String, String> rootElementAttribs = new HashMap<String, String>(); rootElementAttribs.put("xmlns", "http://deutsche-boerse.com/DBRegHub"); rootElementAttribs.put("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance"); rootElementAttribs.put("xsi:schemaLocation", "http://deutsche-boerse.com/DBRegHub regulatoryHubUpload_MiFIR_001.60.xsd"); ExtendedStaxEventItemWriter<TransactionPositionReport> writer = new ExtendedStaxEventItemWriter<TransactionPositionReport>(); writer.setName("transactionWriter"); writer.setVersion("1.0"); writer.setResource(exportFileResource); writer.setMarshaller(marshaller); writer.setRootTagName("reportFile"); writer.setRootElementAttributes(rootElementAttribs); writer.setHeaderCallback(omegaXmlHeaderCallBack); writer.setFooterCallback(getOmegaXmlFooterCallBack()); writer.setShouldDeleteIfEmpty(true); writer.setIndenting(true); return writer; } @StepScope @Bean public PIExtractorItemProcessor extractItemProcessor() { log.debug("Generating PIExtractorItemProcessor"); return new PIExtractorItemProcessor(); } @Bean public PIRemoverItemProcessor removeItemProcessor() { log.debug("Generating PIRemoverItemProcessor"); return new PIRemoverItemProcessor(); } @Bean @StepScope CompositeItemProcessor<TransactionPositionReport, ProcessorWriterDto> extractAndRemoveItemProcessor() { log.debug("Generating CompositeItemProcessor"); CompositeItemProcessor<TransactionPositionReport, ProcessorWriterDto> itemProcessor = new CompositeItemProcessor<>(); itemProcessor.setDelegates((List<? extends ItemProcessor<?, ?>>) Arrays.asList(extractItemProcessor(), removeItemProcessor())); return itemProcessor; } @Bean public EdsClientItemWriter<ProcessorWriterDto> edsClientItemWriter() { log.debug("Generating EdsClientItemWriter"); return new EdsClientItemWriter<>(); } @Bean @StepScope public OmegaXmlFileWriter<ProcessorWriterDto> omegaXmlFileWriter(OmegaXmlHeaderCallBack omegaXmlHeaderCallBack, @Value("#{jobParameters['file.path']}") String path, @Value("#{jobParameters['submission.account']}") String submissionAccount) { log.debug("Generating OmegaXmlFileWriter"); return new OmegaXmlFileWriter(staxTransactionItemWriter(omegaXmlHeaderCallBack, path, submissionAccount)); } @Bean @StepScope public CompositeItemWriter<ProcessorWriterDto> compositeItemWriter(OmegaXmlHeaderCallBack omegaXmlHeaderCallBack, @Value("#{jobParameters['file.path']}") String path, @Value("#{jobParameters['submission.account']}") String submissionAccount) { log.debug("Generating CompositeItemWriter"); CompositeItemWriter<ProcessorWriterDto> compositeItemWriter = new CompositeItemWriter<>(); compositeItemWriter.setDelegates(Arrays.asList(edsClientItemWriter(), omegaXmlFileWriter(omegaXmlHeaderCallBack, path, submissionAccount))); return compositeItemWriter; } @Bean public RestTemplate restTemplate() { log.debug("Generating RestTemplate"); return new RestTemplate(); } }

从 XJC 工具生成的 Transaction、Report 和 ReportFile java 类

 // // This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v2.2.8-b130911.1802 // See <a href="http://java.sun.com/xml/jaxb">http://java.sun.com/xml/jaxb</a> // Any modifications to this file will be lost upon recompilation of the source schema. // Generated on: 2021.05.18 at 02:21:55 PM BST // import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.XmlType; /** * <p>Java class for transactionPositionReport complex type. * * <p>The following schema fragment specifies the expected content contained within this class. * * <pre> * &lt;complexType name="transactionPositionReport"> * &lt;complexContent> * &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"> * &lt;sequence> * &lt;element name="processingDetails" type="{http://deutsche-boerse.com/DBRegHub}processingDetails"/> * &lt;element name="configurableFields" type="{http://deutsche-boerse.com/DBRegHub}configurableFields" minOccurs="0"/> * &lt;element name="mifir" type="{http://deutsche-boerse.com/DBRegHub}mifirDetails" minOccurs="0"/> * &lt;/sequence> * &lt;/restriction> * &lt;/complexContent> * &lt;/complexType> * </pre> * * */ @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "transactionPositionReport", propOrder = { "processingDetails", "configurableFields", "mifir" }) public class TransactionPositionReport { @XmlElement(required = true) protected ProcessingDetails processingDetails; protected ConfigurableFields configurableFields; protected MifirDetails mifir; /** * Gets the value of the processingDetails property. * * @return * possible object is * {@link ProcessingDetails } * */ public ProcessingDetails getProcessingDetails() { return processingDetails; } /** * Sets the value of the processingDetails property. * * @param value * allowed object is * {@link ProcessingDetails } * */ public void setProcessingDetails(ProcessingDetails value) { this.processingDetails = value; } /** * Gets the value of the configurableFields property. * * @return * possible object is * {@link ConfigurableFields } * */ public ConfigurableFields getConfigurableFields() { return configurableFields; } /** * Sets the value of the configurableFields property. * * @param value * allowed object is * {@link ConfigurableFields } * */ public void setConfigurableFields(ConfigurableFields value) { this.configurableFields = value; } /** * Gets the value of the mifir property. * * @return * possible object is * {@link MifirDetails } * */ public MifirDetails getMifir() { return mifir; } /** * Sets the value of the mifir property. * * @param value * allowed object is * {@link MifirDetails } * */ public void setMifir(MifirDetails value) { this.mifir = value; } } // // This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v2.2.8-b130911.1802 // See <a href="http://java.sun.com/xml/jaxb">http://java.sun.com/xml/jaxb</a> // Any modifications to this file will be lost upon recompilation of the source schema. // Generated on: 2021.05.18 at 02:21:55 PM BST // import java.util.ArrayList; import java.util.List; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlType; /** * <p>Java class for record complex type. * * <p>The following schema fragment specifies the expected content contained within this class. * * <pre> * &lt;complexType name="record"> * &lt;complexContent> * &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"> * &lt;choice> * &lt;element name="transaction" type="{http://deutsche-boerse.com/DBRegHub}transactionPositionReport" maxOccurs="unbounded" minOccurs="0"/> * &lt;element name="referencePartyDetails" type="{http://deutsche-boerse.com/DBRegHub}referencePartyDetails" maxOccurs="unbounded" minOccurs="0"/> * &lt;/choice> * &lt;/restriction> * &lt;/complexContent> * &lt;/complexType> * </pre> * * */ @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "record", propOrder = { "transaction", "referencePartyDetails" }) public class Record { protected List<TransactionPositionReport> transaction; protected List<ReferencePartyDetails> referencePartyDetails; /** * Gets the value of the transaction property. * * <p> * This accessor method returns a reference to the live list, * not a snapshot. Therefore any modification you make to the * returned list will be present inside the JAXB object. * This is why there is not a <CODE>set</CODE> method for the transaction property. * * <p> * For example, to add a new item, do as follows: * <pre> * getTransaction().add(newItem); * </pre> * * * <p> * Objects of the following type(s) are allowed in the list * {@link TransactionPositionReport } * * */ public List<TransactionPositionReport> getTransaction() { if (transaction == null) { transaction = new ArrayList<TransactionPositionReport>(); } return this.transaction; } public List<ReferencePartyDetails> getReferencePartyDetails() { if (referencePartyDetails == null) { referencePartyDetails = new ArrayList<ReferencePartyDetails>(); } return this.referencePartyDetails; } } import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.XmlType; /** * <p>Java class for anonymous complex type. * * <p>The following schema fragment specifies the expected content contained within this class. * * <pre> * &lt;complexType> * &lt;complexContent> * &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"> * &lt;sequence> * &lt;element name="fileInformation" type="{http://deutsche-boerse.com/DBRegHub}fileInformation"/> * &lt;element name="record" type="{http://deutsche-boerse.com/DBRegHub}record"/> * &lt;/sequence> * &lt;/restriction> * &lt;/complexContent> * &lt;/complexType> * </pre> * * */ @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "", propOrder = { "fileInformation", "record" }) @XmlRootElement(name = "reportFile") public class ReportFile { @XmlElement(required = true) protected FileInformation fileInformation; @XmlElement(required = true) protected Record record; /** * Gets the value of the fileInformation property. * * @return * possible object is * {@link FileInformation } * */ public FileInformation getFileInformation() { return fileInformation; } /** * Sets the value of the fileInformation property. * * @param value * allowed object is * {@link FileInformation } * */ public void setFileInformation(FileInformation value) { this.fileInformation = value; } /** * Gets the value of the record property. * * @return * possible object is * {@link Record } * */ public Record getRecord() { return record; } /** * Sets the value of the record property. * * @param value * allowed object is * {@link Record } * */ public void setRecord(Record value) { this.record = value; } }

尝试编组时得到的异常堆栈跟踪

 java.lang.IllegalStateException: Marshaller must support the class of the marshalled object at org.springframework.util.Assert.state(Assert.java:76) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.batch.item.xml.StaxEventItemWriter.write(StaxEventItemWriter.java:767) ~[spring-batch-infrastructure-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.batch.item.xml.StaxEventItemWriter$$FastClassBySpringCGLIB$$d105dd1.invoke(<generated>) ~[spring-batch-infrastructure-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:136) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:124) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE] at org.springframework.batch.item.xml.StaxEventItemWriter$$EnhancerBySpringCGLIB$$25cb8145.write(<generated>) ~[spring-batch-infrastructure-4.2.4.RELEASE.jar:4.2.4.RELEASE] at com.trax.europeangateway.itemwriter.omegaxml.OmegaXmlFileWriter.write(OmegaXmlFileWriter.java:37) ~[classes/:?] at com.trax.europeangateway.itemwriter.omegaxml.OmegaXmlFileWriter$$FastClassBySpringCGLIB$$48e7f3da.invoke(<generated>) ~[classes/:?] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]

仅供参考：在生成的 java 类中，只有ReportFile类使用@XmlRootElement注释。 但是如果我用@XmlRootElement注释transaction类，我就可以生成一个 XML 文件，但是输出文件中的所有事务标记都带有命名空间信息。

<?xml version="1.0" encoding="UTF-8"?>
<reportFile xsi:schemaLocation="http://deutsche-boerse.com/DBRegHub regulatoryHubUpload_MiFIR_001.60.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <fileInformation>
        <sender>11003220</sender>
        <timestamp>2020-12-23T09:05:34Z</timestamp>
        <environment>LOCAL</environment>
        <version>1.0</version>
    </fileInformation>
    <record>
        <transaction xmlns="http://deutsche-boerse.com/DBRegHub">
        </transaction>
        <transaction xmlns="http://deutsche-boerse.com/DBRegHub">
        </transaction>
        <transaction xmlns="http://deutsche-boerse.com/DBRegHub">
        </transaction>
    </record>
</reportFile>