Problem transformation, JSP Vs Application

[Julie Mc Cabe]

Hello,   I have come across a problem with xslt transformation using xerces 2.  The scenerio is as follows.    JSP containing custom tag, invokes XSLT against a specified XML file.  A list of parameters are set.  This falls over when running from the JSP on Tomcat 4.1.12, but when I both manually transform from the command line and using the same code but in a standalone Java application the transformation is successful.  Ive tried various ideas but nothing has solved the problem.   Thanks Julie.   The Java code is as follows:   public static String transformWithParams(String xml, String urlXslt,                                       ArrayList params) throws Exception         Writer transformedXml = null;         try         {             transformedXml = new StringWriter();             Transformer transformer = tFactory.newTransformer(                 new StreamSource(urlXslt));              if (params != null)             {                 int size = params.size();                 for (int i = 0; i < size; i++)                 {                     XsltParameter param = (XsltParameter)params.get(i);                     transformer.setParameter(param.getName(), param.getValue());                 }             }             transformer.setParameter("operationName", "AddDevice");             transformer.transform(new StreamSource(xml), new StreamResult(transformedXml));             return transformedXml.toString();         }         catch (TransformerException te)         {             throw new Exception("Transformer exception using XSLT file "                 + urlXslt, te);         }         finally         {             try {             if (transformedXml != null)             {                 transformedXml.close();             }             catch(Exception e){}         } }