I'm trying to create a simple XML document and am receiving the above error when adding the root element to the document. I only have the one root element (the first element created for the document) and the error throws on the first append_child() call. Here is the code leading up to where the error throws (on the securityDoc.appendChild(securityDoc) call):
public Document CreateSecurityHeader() throws ParserConfigurationException {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
DocumentBuilder builder = factory.newDocumentBuilder();
Document securityDoc = builder.newDocument();
try {
Element securityRoot = securityDoc.createElementNS("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd", "wsse:Security");
securityRoot.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:wsse", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
securityRoot.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:wsu", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
securityRoot.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:env", "http://www.w3.org/2003/05/soap-envelope");
securityRoot.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:wss","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
securityRoot.setAttribute("env:mustUnderstand", "1");
securityDoc.appendChild(securityDoc);
As this is the only Element in that document at this point, how am I getting the this error? I did have to pull in the xalan and xerces library as dependencies for this project for something else, could there be an incompatibility here?
Whoops. You append securityDoc to securityDoc.
securityDoc.appendChild(securityDoc);
I'm sure you mean this:
securityDoc.appendChild(securityRoot);
I only noticed this myself by stepping through the validation code and when it was using the node lookup tables to check whether the proposed tree structure is legal I saw that what you were appending was DOCUMENT_NODE, which is not legal to append to a DOCUMENT_NODE.