java - 如何根据 xsd 在 jaxb2marshaller 中确定要扫描的正确包

Question

我正在使用 spring jaxb2marshaller 进行编组和解组。它适用于版本 10，但现在我必须支持 xsd 模式的两个不同版本（例如版本 01 和 10）。如何设置 jaxb2marshaller 根据 xsd 版本扫描包。我的解析代码是

public void parseSampleFile(String fileLocation) throws FileNotFoundException, XMLStreamException {
    InputStream inputStream = getFilePathInputStream(fileLocation);
    XMLInputFactory xmlInputFactory = XMLInputFactory.newInstance();
    XMLStreamReader xsr = xmlInputFactory.createXMLStreamReader(inputStream);
    XMLReaderWithoutNamespace xmlStreamReader = new XMLReaderWithoutNamespace(xsr);
    StAXSource stAXSource = new StAXSource(xmlStreamReader);
    // skip to the first element to reach Document

    while (xmlStreamReader.hasNext() && !xmlStreamReader.isStartElement()) {
        xmlStreamReader.next();
    }

    while (xmlStreamReader.getEventType() == XMLStreamConstants.START_ELEMENT) {
        switch (xmlStreamReader.getLocalName()) {
            case "Hdr":
                header = (Header) jaxb2Marshaller.unmarshal(stAXSource);
                xmlStreamReader.nextTag();
                break;
            case "SomeInf":
                instruction = (Instruction) jaxb2Marshaller.unmarshal(stAXSource);
                xmlStreamReader.nextTag();
                break;
            default:
                xmlStreamReader.nextTag();
        }
    }
}

我在配置文件中将 jaxb2marshler 设置为

@Bean
Jaxb2Marshaller jaxb2Marshaller() {
    Jaxb2Marshaller jaxb2Marshaller = new Jaxb2Marshaller();
    jaxb2Marshaller.setPackagesToScan("com.sample.version10.model");
    return jaxb2Marshaller;
}