XML de origen (con DTD)
<!DOCTYPE MYSERVICE SYSTEM "./MYSERVICE.DTD">
<MYACCSERVICE>
<REQ_PAYLOAD>
<ACCOUNT>1234567890</ACCOUNT>
<BRANCH>001</BRANCH>
<CURRENCY>USD</CURRENCY>
<TRANS_REFERENCE>201611100000777</TRANS_REFERENCE>
</REQ_PAYLOAD>
</MYACCSERVICE>
Implementación de DOM de Java para aceptar XML anterior como cadena y eliminar la declaración DTD
public Document removeDTDFromXML(String payload) throws Exception {
System.out.println("### Payload received in XMlDTDRemover: " + payload);
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
dbf.setValidating(false);
dbf.setNamespaceAware(true);
dbf.setFeature("http://xml.org/sax/features/namespaces", false);
dbf.setFeature("http://xml.org/sax/features/validation", false);
dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-dtd-grammar", false);
dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(payload));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
System.out.println("Parse Error: " + e.getMessage());
return null;
} catch (SAXException e) {
System.out.println("SAX Error: " + e.getMessage());
return null;
} catch (IOException e) {
System.out.println("IO Error: " + e.getMessage());
return null;
}
return doc;
}
XML de destino (sin DTD)
<MYACCSERVICE>
<REQ_PAYLOAD>
<ACCOUNT>1234567890</ACCOUNT>
<BRANCH>001</BRANCH>
<CURRENCY>USD</CURRENCY>
<TRANS_REFERENCE>201611100000777</TRANS_REFERENCE>
</REQ_PAYLOAD>
</MYACCSERVICE>