Non-wanted character in my XML

Question

Hi,
(I'm sorry for my english expression ==> I'm french)
I've tried to create an XML Document with this source code :
Document doc = createDomDocument();
public static Document createDomDocument() {
try {
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = builder.newDocument();
return doc;
} catch (ParserConfigurationException e) {
     e.printStackTrace();
return null;
Element root = doc.createElement("root");
acl.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
acl.setAttribute("xmlns", "http://www.example.org/myProject");
acl.setAttribute("xsi:noNamespaceSchemaLocation", "http://www.example.org/myProject.xsd");
doc.appendChild(acl);But my result is that :
<?xml version="1.0" encoding="UTF-8"?>
<root     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://www.example.org/myProject"
                       xmlns:NS1=""
          NS1:xsi:noNamespaceSchemaLocation="http://www.example.org/myProject.xsd">
     <firstElement xmlns:NS1="" NS1:id="5646478946135" NS1:oper="CRA" NS1:mode="BAT" NS1:secret="YES">
          <PositionDate>20080822</PositionDate>
     </firstElement>
</root>And I don't understand why I've got this 'NS1' (I think it's for NameSpace...)
Have you have any solution for me ? I've search some solution on this forum but I've find nothing
Thank you.

Answer 1

This is probably what's confusing the DOM:
acl.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");Attribute names "xmlns:foo" are interpreted as a namespace prefix definition; they do not themselves need to be namespaced. So, you could rewrite like this:
acl.setAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");Or, an arguably better approach is this (because it doesn't assume that you've set the prefix namespace):
Element root = doc.createElement("root");
acl.setAttribute("xmlns", "http://www.example.org/myProject");
acl.setAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "xsi:noNamespaceSchemaLocation", "http://www.example.org/myProject.xsd");