Hi David, 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 transformer and let it handle the character encoding instead of using a FileWriter which assumes the platform default encoding (which could be anything) is acceptable. Something similar 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] "Jones, David [deljones]" <[EMAIL PROTECTED]> wrote on 10/30/2006 12:50:39 PM: > Hi > I've been trying to write and read back a UTF-16 encoded XML > document, without success. I can seemingly write the document ok > (see WriteUTF16.java ) and Firefox can open it without complaining > (except the fact it doesn't have any style information). When I try > and read back the document (using ReadUTF16.java) I get the > following exception; - > > [Fatal Error] output.xml:1:40: Content is not allowed in prolog. > Exception in thread "main" org.xml.sax.SAXParseException: Content is > not allowed > in prolog. > at org.apache.xerces.parsers.DOMParser.parse(Unknown Source) > at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source) > at javax.xml.parsers.DocumentBuilder.parse(Unknown Source) > at ReadUTF16.main(ReadUTF16.java:47) > I'm not sure whether I'm missing something simple, doing something > really stupid or even if it is a platform dependent thing (I'm using > Windows XP and Windows 2000). > > many thanks > > david > > > > ------- ReadUTF16.java ------- > import org.w3c.dom.*; > import javax.xml.parsers.*; > import java.io.*; > import java.util.*; > import javax.xml.transform.dom.*; > import javax.xml.transform.*; > import javax.xml.transform.stream.*; > > > public class ReadUTF16 > { > public static void main ( String rags[] ) throws Exception > { > System.out.println("read: main()"); > File f = new File ( "output.xml"); > > DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); > DocumentBuilder db = dbf.newDocumentBuilder(); > Document doc = db.parse( f.toURI().toString() ); > > // serialise to console using jaxp > TransformerFactory tf = TransformerFactory.newInstance(); > Transformer t = tf.newTransformer(); > t.setOutputProperty ( OutputKeys.INDENT , "yes" ) ; > DOMSource ds = new DOMSource ( doc ); > StreamResult res = new StreamResult ( System.out ) ; > t.transform ( ds , res ) ; > > }// end method > }// end class > > > ------- WriteUTF16.java ------- > > import org.w3c.dom.*; > import javax.xml.parsers.*; > import java.io.*; > import java.util.*; > import javax.xml.transform.dom.*; > import javax.xml.transform.*; > import javax.xml.transform.stream.*; > > > public class WriteUTF16 > { > > public static void main ( String rags[] ) throws Exception > { > System.out.println("main()"); > DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); > DocumentBuilder db = dbf.newDocumentBuilder(); > Document doc = db.newDocument(); > Element element = doc.createElement( "tagname") ; > element.setAttribute("test","test-value"); > doc.appendChild ( element ) ; > // serialise using jaxp > File f = new File ( "output.xml"); > TransformerFactory tf = TransformerFactory.newInstance(); > > Transformer t = tf.newTransformer(); > > Properties p = t.getOutputProperties(); > // print properties to console > p.list ( System.out ) ; > // set up the transformer > // there are properties to set and error listeners which can be set > > // does something when output to the console anyway... > t.setOutputProperty ( "encoding" , "UTF-16" ) ; > // set indentation > t.setOutputProperty ( OutputKeys.INDENT , "yes" ) ; > // new DOMSource instance > DOMSource ds = new DOMSource ( doc ); > // Print Writer > PrintWriter writer = new PrintWriter( new BufferedWriter ( new > FileWriter ( f) ) ); > StreamResult res = new StreamResult ( writer ) ; > // transform > t.transform ( ds , res ) ; > }// end method > }// end class --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
