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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
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