如何在签名和证书部分删除XML数字签名中奇怪的行尾？

如何解决如何在签名和证书部分删除XML数字签名中奇怪的行尾？

我正在尝试使用证书签署xlm文档。 代码几乎是这样的：

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
InputSource inputSource = new InputSource(new StringReader(xml));
inputSource.setEncoding("UTF-8");
Document document = dbf.newDocumentBuilder().parse(inputSource);
Element element = document.getDocumentElement();
DOMHelper.useIdAsXmlId(element);
FirstCertSelector firstCertSelector = new FirstCertSelector();
Passprovider passprovider = new Passprovider(cert.getCertPass());
KeyingDataProvider kdp = new FileSystemKeyStoreKeyingDataProvider("pkcs12",cert.getCertFilePath(),firstCertSelector,passprovider,true);

DataObjectDesc dataObjectDesc = (new DataObjectReference("")).withTransform(new EnvelopedSignatureTransform());
SignedDataObjects signedDataObjects = (new SignedDataObjects()).withSignedDataObject(dataObjectDesc);
XadesSigner xadesSigner = (new XadesBesSigningProfile(kdp)).withAlgorithmsProviderEx(new Signingalgorithm()).newSigner();
xadesSigner.sign(signedDataObjects,element);
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setoutputProperty(OutputKeys.ENCODING,"UTF-8");
document.setXmlStandalone(true);

DOMSource source = new DOMSource(document);
StringWriter result = new StringWriter();
transformer.transform(source,new StreamResult(result));
String signedXML = result.toString();

不幸的是，签名和证书部分中的signedXML在行尾有一些非常奇怪的字符：

<ds:SignatureValue Id="xmldsig-some-id-bla-bla-sigvalue">
blablabla...&#13;
...
blablabla...&#13;
blabla==
</ds:SignatureValue>
<ds:KeyInfo>
<ds:X509Data>
<ds:X509Certificate>
blablabla...&#13;
...
blablabla...&#13;
blablabla...&#13;
blablabla...&#13;
blablabla...&#13;
blabla==
</ds:X509Certificate>

我不知道这个奇怪的
结局从何而来。 我尝试过可能的事情（例如-Dfile.encoding=UTF-8）来阅读此书，但没有成功。

我正在使用

<dependency>
    <groupId>com.googlecode.xades4j</groupId>
    <artifactId>xades4j</artifactId>
    <version>1.5.1</version>
</dependency>

请帮助我。