xm file as input for servlet

Hi,

How can I read a simple xml file using a servlet? Mean while I do some google search if I can find some hints..

Best Regards
Ayub

Read from where , from client or from server itself?

Hi Rahul,

XM file needs to be read from the client as an input stream. I need to genereate back an xml document. I am not sure what processing needs to be done. If I know how to read xml and generate the same xml back, I am good with it. Any useful links on this can be useful.

Thank you.

Best Regards
Ayub.

We are using XStream, DomDriver from thoughtworks xstream, a Java library to serialize/deserialize objects to/from XML.

You can find that here

Still I do not know about the client you are taking about.
If that is browser , you can use

<input type="file" name="fileName"/>

and at the server you can use fileUploader.
http://faq.javaranch.com/view?FileUpload

How about working through the Sun tutorial on XML processing.

Creating a Document object from any InputStream is pretty simple, here is an example:

private Document loadAns( InputStream s ) throws IOException {
    InputSource src = new InputSource( s );
    Document doc = null ;
    try {  
      DocumentBuilderFactory fac = DocumentBuilderFactory.newInstance();
      fac.setValidating( false ); // default is false
      fac.setIgnoringComments( true );
      fac.setIgnoringElementContentWhitespace( true );
      DocumentBuilder builder = fac.newDocumentBuilder();
      doc = builder.parse( src );
    }catch(ParserConfigurationException pce){
        System.out.println( pce.toString() );
    }catch(SAXParseException spe ){
        StringBuffer sbX = new StringBuffer( spe.toString() );
        sbX.append("\n  Line number: " + spe.getLineNumber());
        sbX.append("\nColumn number: " + spe.getColumnNumber() );
        sbX.append("\n Public ID: " + spe.getPublicId() );
        sbX.append("\n System ID: " + spe.getSystemId() + "\n");
        System.out.println( sbX.toString() );
    }catch( SAXException se ){
       System.out.println("loadQFM threw " + se );       
       se.printStackTrace( System.out );
    }
    return doc ;
  }

Hi William,

Thanks for a cool code and the link !! While I was searching for info on XML I cam across the JDOM parser. I need some inputs on this, will post the query in the XML forum.

Thanks for your wonderful answer!!

Best Regards
Ayub.