StaxEventItemReader中的

Question

@Data
@AllArgsConstructor
@NoArgsConstructor
public class EmployeeDTO {

    private Long id;
    private String firstName;
    private String surname;
    private String email;
    private Integer age;
}

public final class XMLReader<T> extends StaxEventItemReader<T> implements ClosableItemReader<T> {
    public XMLReader(Map<String, Object> parameters) {

        setResource(new FileSystemResource((File) parameters.get(RESOURCE)));
        setFragmentRootElementName((String) parameters.get(ROOT_TAG));

        Map<String, String> aliases = (Map<String, String>) parameters.get(ALIASES_MAP);
        XStreamMarshaller marshaller = new XStreamMarshaller();
        marshaller.setAliases(aliases);
        setUnmarshaller(marshaller);
        setStrict(false);
        open(new ExecutionContext());
    }

public class EmployeeReader implements ItemReader<EmployeeDTO> {


    private final JobImportReaderFactory jobImportReaderFactory;
    private ClosableItemReader<EmployeeDTO> itemReader;

    public EmployeeReader(JobImportReaderFactory jobImportReaderFactory, JobFileRepository jobFileRepository) {
        this.jobImportReaderFactory = jobImportReaderFactory;
        this.jobFileRepository = jobFileRepository;
    }

    @BeforeStep
    public void setup() throws IOException {
        // this factory gives me XMLReader instance
        itemReader = jobImportReaderFactory.getItemReader(jobEnum, readerParameters, EmployeeDTO.class);

    }

    @Override
    public EmployeeDTO read() throws Exception {
        log.debug("read()");
        return itemReader.read();
    }
}

java.lang.ClassCastException：com.kk.tutorial.domain.dtos.employeedTo类不能强制转换为com.kk.tutorial.domain.dtos.employeedTo类(com.kk.tutorial.domain.dtos.employeedTo位于加载器'app'的未命名模块中；com.kk.tutorial.domain.dtos.employeedTo位于加载器org.springframework.boot.devtools.restart.classloader@24eb3739)的未

尝试在EmployeeDTO中实现Serializable，但它不起作用。我知道这是ClassLoader的问题，但我不知道如何处理ClassLoader，也不知道如何将ItemReader.read（）中的值case到另一个ClassLoader中的EmployeeDTO。你知道怎么修理铸件吗？

Answer 1

从pom.xml中删除spring-boot-devtools依赖项将修复该问题。

更新

devtools使用了一个单独的类加载程序，这导致了给定的问题。