Hi Chad, The encoding declared in your document (in the XML declaration) and the actual encoding of your document probably don't match after you've serialized it to a file. You should be passing a FileOutputStream to the serializer and let it handle the character encoding instead of using a FileWriter which assumes the platform default encoding (which could be anything) is acceptable. This was discussed on the j-dev list many months ago. The thread starts here [1] in the archives if you're interested.
Thanks. [1] http://mail-archives.apache.org/mod_mbox/xerces-j-dev/200504.mbox/[EMAIL PROTECTED] Michael Glavassevich XML Parser Development IBM Toronto Lab E-mail: [EMAIL PROTECTED] E-mail: [EMAIL PROTECTED] Chad La Joie <[EMAIL PROTECTED]> wrote on 09/06/2006 02:26:30 PM: > I'm using Xerces-J 2.8.0 as my endorsed JAXP 1.3 parser. My code > needs to write > out XML and later read it back in. I'm using the LSSerializer to > write out the > root element node of my document to a string and then using a FileWriter to > write it out to disk. Then I use a FileInputStream to read it in > and parse it > with a DocumentBuilder. > > When I do this I get a SAX exception indicating I have invalid content in the > prolog. I searched the archives and found a thread where someone > else had this > issue. It was caused by non-visible characters in the prolog. I validated, > through an octal dump, that the file written by my code didn't have any extra > characters. > > Attached is a test case that reproduces the problem. Any assistance on this > would be greatly appreciated. I'm sure I'm just messing up > something with the > Serializer but I'm not sure what. > -- > Chad La Joie 2052-C Harris Bldg > OIS-Middleware 202.687.0124 > import java.io.File; > import java.io.FileInputStream; > import java.io.FileWriter; > > import javax.xml.parsers.DocumentBuilder; > import javax.xml.parsers.DocumentBuilderFactory; > > import org.w3c.dom.DOMImplementation; > import org.w3c.dom.Document; > import org.w3c.dom.Element; > import org.w3c.dom.Node; > import org.w3c.dom.ls.DOMImplementationLS; > import org.w3c.dom.ls.LSSerializer; > > > public class XMLSerializeTest { > > private static DocumentBuilder docBuilder; > > public static void main(String[] args) throws Exception{ > String xmlFilePath = "/tmp/example.xml"; > > DocumentBuilderFactory builderFactory = > DocumentBuilderFactory.newInstance(); > docBuilder = builderFactory.newDocumentBuilder(); > > // Create an example element > Element exampleXML = createElement(); > > // Write it out to a file and read it back in > // It fails when reading it in > File xmlFile = new File(xmlFilePath); > writeXML(exampleXML, xmlFile); > Element readXML = readXML(xmlFile); > > // Write it out to STDOUT > System.out.println(nodeToString(readXML)); > > } > > public static Element createElement() throws Exception{ > Document document = docBuilder.newDocument(); > > Element rootElement = document.createElementNS("http://example.org > ", "example:foo"); > document.appendChild(rootElement); > rootElement.setAttribute("attrib1", "somevalue"); > rootElement.setAttribute("attrib2", "somevalue"); > > return rootElement; > } > > public static void writeXML(Element element, File output) throwsException{ > FileWriter out = new FileWriter(output); > out.write(nodeToString(element)); > out.flush(); > out.close(); > } > > public static String nodeToString(Node node) { > DOMImplementation domImpl = node.getOwnerDocument(). > getImplementation(); > DOMImplementationLS domImplLS = (DOMImplementationLS) > domImpl.getFeature("LS", "3.0"); > LSSerializer serializer = domImplLS.createLSSerializer(); > return serializer.writeToString(node); > } > > public static Element readXML(File input) throws Exception{ > FileInputStream in = new FileInputStream(input); > Document document = docBuilder.parse(in); > return document.getDocumentElement(); > } > } > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
