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Asked: 2026-06-18T11:01:20+00:00

I am creating a com.w3c.dom.Document from a String using this code: DocumentBuilderFactory docFactory =

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I am creating a com.w3c.dom.Document from a String using this code:

DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse(new InputSource(new StringReader("<a><b id="5"/></a>")));

When I System.out.println(xmlToString(document)), I get this:

<?xml version="1.0" encoding="UTF-8" standalone="no"?><a><b id="5"/></a>

Everything is ok, but I don’t want the XML to have the <?xml version="1.0" encoding="UTF-8" standalone="no"?> declaration, because I have to sign the with private key and embed to soap envelope.

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1 Answer

  1. Editorial Team

    You could use a Transformer and set the OutputKeys.OMIT_XML_DECLARATION property to "yes": 

    Transformer t = TransformerFactory.newInstance().newTransformer();
t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
StringWriter sw = new StringWriter();
t.transform(new DOMSource(doc), new StreamResult(sw));

    Please note you could also:

    • Use a StreamSource instead of a DOMSource to feed the String directly to the transformer, if you don’t really need the Document.
    • Use a DOMResult instead of a StreamResult if you wanted to output a Document.
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