我有一个spring Boot ，其中有一个spring批处理应用程序，该应用程序处理一个输入XML文件，如您所见，XML包含一个容器元素results和一个重复元素contact。

<?xml version="1.0" encoding="UTF-8" ?>
<query>
    <id>123</id>
    <tracking>555</tracking>
    <results>
        <contact>
            <full_name>
                <first_name>John</first_name>
                <last_name>Doe</last_name>
            </full_name>
            <street>123 Main St</street>
            <city>Chicago</city>
            <state>IL</state>
            <zip>60610</zip>
        </contact>
        <contact>
            <full_name>
                <first_name>Jane</first_name>
                <last_name>Smith</last_name>
            </full_name>
            <street>123 Main St</street>
            <city>Miami</city>
            <state>FL</state>
        </contact>
    </results>
</query>

beanio-configuration.xml（使用@nicoschl建议）

<beanio xmlns="http://www.beanio.org/2012/03">
    <stream name="query" format="xml" strict="true" ignoreUnidentifiedRecords="true">
        <record name="id"></record>
        <record name="tracking"></record>
        <record name="results" class="com.test.springbatchapp.model.ContactList">
            <segment name="contact" collection="list" class="com.test.springbatchapp.model.Contact" occurs="0+">
                <segment name="full_name">
                    <field name="firstName" xmlName="first_name" maxLength="20" />
                    <field name="lastName" xmlName="last_name" maxLength="30" />
                </segment>
                <field name="street" maxLength="30" />
                <field name="city" maxLength="25" />
                <field name="state" minLength="2" maxLength="2" />
                <field name="zip" regex="\d{5}" minOccurs="0" default="" />
            </segment>
        </record>
    </stream>
</beanio>

Contact.java

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Contact {
    
    private String firstName;
    private String lastName;
    private String street;
    private String city;
    private String state;
    private String zip;
}

ContactList.java

@Data
@AllArgsConstructor
@NoArgsConstructor
public class ContactList {
    
    private List<Contact> contact;
}

读者：

@Bean
public ItemReader<Contact> reader() {
    BeanIOFlatFileItemReader<Contact> reader = new BeanIOFlatFileItemReader<>();
    try {
        reader.setResource(new FileSystemResource(fileInputContact));
        reader.setStreamName(inputContactStreamName);
        reader.setStreamMapping(new ClassPathResource(beanIoConfigurationXmlPath));
        reader.setStreamFactory(StreamFactory.newInstance());
        reader.getLineNumber();
        reader.afterPropertiesSet();
    } catch (Exception e) {
        log.error("ERROR: An issue occurred in the BeanIO Item Reader:: {} {}", e.getMessage(), e.getStackTrace());
    }
    
    return reader;      
}

作者：

@Bean
public FlatFileItemWriter<Contact> writer() {
    FlatFileItemWriter<Contact> writer = new FlatFileItemWriter<>();
    writer.setResource(new FileSystemResource(fileOutputContact));
    writer.setLineAggregator(new DelimitedLineAggregator<Contact>() {
        {
            setDelimiter(",");
            setFieldExtractor(new BeanWrapperFieldExtractor<Contact>() {
                {
                    setNames(new String[] { "firstName", "lastName", "street", "city", "state", "zip" });
                }                   
            });
        }
    });
    
    return writer;
}

作业和步骤：

@Bean
public Job importUserJob(Step step1) {
    return jobBuilderFactory.get("importUserJob")
      .incrementer(new RunIdIncrementer())          
      .flow(step1)
      .end()
      .build();
}

@Bean
public Step step1(FlatFileItemWriter<Contact> writer) {
    return stepBuilderFactory.get("step1")
      .<Contact, Contact> chunk(10)
      .reader(reader())
      .processor(processor())
      .writer(writer)
      .build();
}

我遇到：在作业导入中执行步骤step1时遇到错误UserJob，com.test.springbatchapp.model.ContactList无法转换为com.test.springbatchapp.model.联系人
要解决上述错误，我需要做哪些更改？