基于模式规范化XML标签字母大小写

Question

有一个我无法控制的XML生产软件，它违反了约定的模式，所生成的XML标签仅具有首字母大写（Tagname）而不是驼峰式（{{ 1}}）。

我有一个架构，我需要对这些文件进行预处理，然后将标签规范化为相应位置中的预期标签，然后再将其提供给解析器。

以下是打印示例模式并模拟不良情况的程序：

TagName

输出：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = "tESTeLEM")
public static class TestElem {

    public String tEstElem;
}

public static void main(final String[] args) throws Exception {

    final JAXBContext jc = JAXBContext.newInstance(TestElem.class);
    final Schema schema = genSchema(jc);
    System.out.println();
    final TestElem testElem = new TestElem();
    testElem.tEstElem = "value";
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    final Marshaller ma = jc.createMarshaller();
    ma.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
    ma.marshal(testElem, new TeeOutputStream(out, new CloseShieldOutputStream(System.out)));
    System.out.println();
    final String xml = new String(out.toByteArray(), "UTF-8").toLowerCase();
    System.out.println(xml);

    final Unmarshaller unm = jc.createUnmarshaller();
    unm.unmarshal(new StringReader(xml));
}

private static Schema genSchema(final JAXBContext jc) throws Exception {
    final List<ByteArrayOutputStream> outs = new ArrayList<ByteArrayOutputStream>();
    jc.generateSchema(new SchemaOutputResolver() {

        @Override
        public Result createOutput(final String namespaceUri, final String suggestedFileName)
                                                                                              throws IOException {
            final ByteArrayOutputStream out = new ByteArrayOutputStream();
            final TeeOutputStream out2 =
                new TeeOutputStream(out, new CloseShieldOutputStream(System.out));
            outs.add(out);
            final StreamResult streamResult = new StreamResult(out2);
            streamResult.setSystemId("");
            return streamResult;
        }
    });
    final StreamSource[] sources = new StreamSource[outs.size()];
    for (int i = 0; i < outs.size(); i++) {
        final ByteArrayOutputStream out = outs.get(i);
        sources[i] = new StreamSource(new ByteArrayInputStream(out.toByteArray()), "");
    }
    final SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
    return sf.newSchema(sources);
}