[dom4j-user] how to avoid printing DTD information

[Hong Qian]

I would like to print a clean XML. Here are my source code. Build a DOM 
object first, then print it out. My problem is the print result contains DTD 
kind of information, such as "dt_type".

How could I avoid to print out such kind of information?
Thank you,
Jimmy
        SAXReader xmlReader = new SAXReader();
        xmlReader.setValidation(false);
        xmlReader.setIncludeInternalDTDDeclarations(false);
        xmlReader.setStripWhitespaceText(true);
        xmlReader.setIgnoreComments(true);
        xmlReader.setMergeAdjacentText(false);
        xmlMessage.trim();
        //c = DocumentHelper.parseText(xmlMessage);
        StringReader sr = new StringReader(xmlMessage);
        doc = xmlReader.read(sr);
    OutputFormat format = OutputFormat.createPrettyPrint();
        format.setSuppressDeclaration(true);
        XMLWriter writer = new XMLWriter(format);
        writer.write(doc);
input xml string:
                <?xml version="1.0" encoding="UTF-8"?>
                <!DOCTYPE AUTO SYSTEM "AUTODraftV1_14.dtd">
                <root>
                        <StateProvCd>ON</StateProvCd>
                        <PostalCode>M5E1L5</PostalCode>
                        <HomePhone/>
                </root>

result:
		<?xml version="1.0" encoding="UTF-8"?>
		<!DOCTYPE AUTO SYSTEM "AUTODraftV1_14.dtd">
		<root>
			<StateProvCd dt_type="string" dt_maxLength="80" 
dt_pattern="[\000-\177]*">ON</StateProvCd>
			<PostalCode dt_type="string" dt_maxLength="11">M5E1L5</PostalCode>
			<HomePhone dt_type="string" dt_maxLength="32"/>
		</root>


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