Thanx for the response Gary.
Sorry for the confusion on publicId thing. Though, I think it is right, it
is very confusing. I fixed that.
Reg'g the set and get methods in the DTDResolver class: I have to pass the
dtd's URL (to be used as dtd) to the DTDResolver class, so that it can
return the InputSource of that url. Thats the reason it has a get and a set
method for dtdLocation. I cleaned the class and used this code3, which
doesn't work either. It still generates an empty string after transforming
the source (as I said, its not exactly empty, it has just xml header in
it...that too not with the intended encoding). This is my DTDesolver I am
using right now. It is invoking the resolveEntity method of the DTDResovler
class.
***********************DTDResolver*******************
class DTDResolver implements EntityResolver {
String dtdLocation = null;
public void setDtdLocation(String string){
this.dtdLocation = string;
System.out.println("Setting dtdURL: " + this.dtdLocation);
}
public String getDtdLocation(){
System.out.println("Getting publicId");
return this.dtdLocation;
}
public InputSource resolveEntity (String publicId, String systemId){
InputStream inputStream = null;
InputSource source = null;
try{
System.out.println("systemId: " + systemId);
System.out.println("publicId: " + publicId);
System.out.println("dtdLocation is: " + this.dtdLocation);
if(StringUtils.isNotEmpty(this.dtdLocation)){
URL url = new URL(this.dtdLocation);
inputStream = url.openStream();
System.out.println("got the inputstream");
source = new InputSource(inputStream);
}else{
System.out.println("publicId is not specified!!!");
}
}catch(Exception e){
e.printStackTrace();
}
return source;
}
}//end DTDResolver
*****************************************
And this is the output I am getting:
--------------------------------output-------------------------------
15:02:55,328 INFO [STDOUT] Setting dtdLocation:
http://localhost:8080/data/SonyDAMAs
setMetadata.dtd
15:02:55,328 INFO [STDOUT] systemId:
file:///C:/jboss-3.0.6/bin/SonyDAMAssetMet
adata.dtd
15:02:55,328 INFO [STDOUT] publicId: null
15:02:55,328 INFO [STDOUT] dtdLocation is:
http://localhost:8080/data/SonyDAMAs
setMetadata.dtd
15:02:55,343 INFO [STDOUT] got the inputstream
-----------------------------output----------------------------------------
FYI: The application is running on JBoss appserver.
As I said, in my previous reponse to Richard, the server is running in
jboss/bin directory and so the systemId is being set to
file:///C:/jboss-3.0.6/bin/SonyDAMAssetMetadata.dtd. And I am not sure how
will the publicId be set! Will it ever be set and/or used? This is what
makes me so uncomfortable with EntityResolver.
FYI: This is the transformation code:
####################################Transformation
code###########################
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer(new StreamSource(new
URL(stylesheet).openStream()));
InputStream inputStream =
req.getContentObject().getMetadataInputStream();
OutputStream outputStream =
req.getContentObject().getMetadataOutputStream();
SAXParserFactory pfactory= SAXParserFactory.newInstance();
pfactory.setValidating(true);
// Get an XMLReader.
XMLReader reader = pfactory.newSAXParser().getXMLReader();
//create a resolver to resolve the DTD in the source xml
reader.setEntityResolver(new DTDResolver());
DTDResolver resolver = (DTDResolver)reader.getEntityResolver();
resolver.setDtdLocation(this.dtdURL);
SAXSource source = new SAXSource(reader,
new InputSource(new InputStreamReader(inputStream)));
//not sure if this is right!
//if i don't have this, it throws an exception saying it cannot find
"SonyDAMAssetMetadata.dtd"
source.setSystemId("SonyDAMAssetMetadata.dtd");
transformer.transform(source, new StreamResult(new
OutputStreamWriter(outputStream, "iso-8859-1")));
############################################################################
#################
Hope you found more info about my problem to help me better:-)!
Thanks,
Pramodh.
