JTidy in weblogic 10.3 throws AbstractMethodError

Question

Hi all,
Last year a developed a portlet application that makes the transformation of a jTidy-DOM-SDK5 to an string as in the next snippet, this year I'm being asked to migrate that application to weblogic portal 10.3 with SDK6 and I'm getting an error as shown below.
Please assist. Thank you!
            //reading HTML
            Document htmlDoc = tidy.parseDOM(in, null);          
            //more code processing the document above
            //Printing out our doc
               TransformerFactory tf = TransformerFactory.newInstance();
               Transformer trans = tf.newTransformer();
               StringWriter sw = new StringWriter();
               trans.transform(new DOMSource(htmlDoc), new StreamResult(sw));
wl_page java.lang.AbstractMethodError
     at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.setDocumentInfo(DOM2TO.java:373)
     at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:127)
     at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:94)
     at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:662)
     at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:708)
     at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:313)

Answer 1

instead of import weblogic.security.SubjectUtils; use import weblogic.security.spi.WLSUser; and get the username as below
Set users = subject.getPrincipals(WLSUser.class);
          Iterator iter = users.iterator();
          while (iter.hasNext()){
               userName = ((WLSUser)iter.next()).getName();
               System.out.println(userName);
this returns you the username