XML News content modification problem in Portal application

Question

Hi,
We are trying to update the xml news content in Portal application with KM API.
We are getting following exception while updating the content.
javax.xml.transform.TransformerException: Namespace fixup failed. Prefix 'xsi' used in attribute 'xsi:noNamespaceSchemaLocation' is not declared anywhere
Please let me know what's to be done
Thanks

Answer 1

Hello,
I faced the same problem in a similar implementation: Message "Namespace fixup failed. Prefix 'xsi' used in attribute 'xsi:noNamespaceSchemaLocation' is not declared anywhere".
When looking at the attributes of the org.w3c.dom.Document, I saw that the namespace URI of xsi was already null after parsing.
The solution which made it work for me was
factory.setNamespaceAware(true);
before parsing the XML text. The URI of xsi was then the one provided by the document.
P.S.: Unfortunately, the error message did not pop up in this test code:
package mytests;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import junit.framework.TestCase;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl;
public class XmlFormsHelperTest2 extends TestCase {
    Document doc;
    String xmldoc =
        "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
            + "<News_Header_v2 xmlns:xf=\"http://www.sapportals.com/wcm/app/xmlforms\" xmlns:xsi=\"http//www.w3.org/2001/XMLSchema-instance\" xsi:noNamespaceSchemaLocation=\"/etc/xmlforms/News_Header_v2/btexx_News_Header_v2-Schema.xml\">"
            + "<text>This is the main text</text>" + "</News_Header_v2>";
    protected void setUp() throws Exception {
        super.setUp();
    public void testToDoc() throws Exception {
        Document doc = setupDocumentSap(xmldoc);
        assertEquals("News_Header_v2", doc.getDocumentElement().getTagName());
        assertEquals("This is the main text", doc.getDocumentElement().getFirstChild().getTextContent());
    public void testFromDoc() throws Exception {
        Document doc = setupDocumentSap(xmldoc);
        String actual = xmlToString(doc);
        assertEquals(xmldoc, actual);
     private Document setupDocument(String xmltext) throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setValidating(false);
        factory.setCoalescing(true);
        DocumentBuilder builder = factory.newDocumentBuilder();
        return builder.parse(new InputSource(new StringReader(xmltext)));
    private Document setupDocumentSap(String xmltext) throws Exception {
        DocumentBuilderFactory factory = new DocumentBuilderFactoryImpl();
        factory.setValidating(false);
        factory.setCoalescing(true);
        //factory.setNamespaceAware(true);
        DocumentBuilder builder = factory.newDocumentBuilder();
        return builder.parse(new InputSource(new StringReader(xmltext)));
    public static String xmlToString(Document xmlDocument) throws Exception {
        Source xmlSource = new DOMSource(xmlDocument);
        StringWriter stringWriter = new StringWriter();
        Result outputTarget = new StreamResult(stringWriter);
          TransformerFactory.newInstance().newTransformer().transform(xmlSource, outputTarget);
        return stringWriter.getBuffer().toString();