Reading xml from WEB-INF Directory and Building XML Document

We had a requirement of reading a xml file from the WEB-INF folder of web-app
and to build a xml document from the file, after building the document its very much easy to
parse through the document and get the date.Here are the steps and code-snippets to do it.

Since its a web-app we need to get the ServletContext.

ServletContext context = pageContext.getServletContext();

After getting the context we need get the file as Stream for building xml document

  InputStream inputStream=context.getResourceAsStream("/WEB-INF/example.xml");

We have got the inputStream we need a build the xml document.The below DomRead.java
will build the document

        Document document = DomReadUtil.parse(inputStream);

public class DomRead
{
  public static Document parse(InputStream stream )
 {
    Document document = null;
    // Initiate DocumentBuilderFactory
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
  // To get a validating parser
  factory.setValidating(false);
  // To get one that understands namespaces
    factory.setNamespaceAware(true);
  try
  {
         // Get DocumentBuilder
         DocumentBuilder builder = factory.newDocumentBuilder();
         // Parse and load into memory the Document
         document = builder.parse(stream);
          return document;
  }
  catch (SAXParseException spe)
  {
         // Error generated by the parser
         System.out.println("\n** Parsing error , line " + spe.getLineNumber()
                            + ", uri " + spe.getSystemId());
         System.out.println(" " + spe.getMessage() );
         // Use the contained exception, if any
          Exception x = spe;
          if (spe.getException() != null)
            x = spe.getException();
          x.printStackTrace();
  }
  catch (SAXException sxe)
  {
          // Error generated during parsing
          Exception x = sxe;
          if (sxe.getException() != null)
            x = sxe.getException();
          x.printStackTrace();
  }
  catch (ParserConfigurationException pce)
  {
          // Parser with specified options can't be built
          pce.printStackTrace();
        } catch (IOException ioe) {
          // I/O error
          ioe.printStackTrace();
   }
        return null;
  }
}

Now we got the XMLDocument document we can parse the xml document and get the
information we need.

Note :

The inputStream passing to the DomRead.java should be opened or Read, if so it will give
Premature End Of File - SaxParseException.

ServletContext context = pageContext.getServletContext();
InputStream inputStream=context.getResourceAsStream("/WEB-INF/example.xml");
StringBuffer sb=new StringBuffer();
BufferedReader br=new BufferedReader(new InputStreamReader(inputStream));
while(br.readLine()!=null)
 {
  sb.append(br.readLine()+"\n");
 }
System.out.println("fpath "+sb.toString());
Document document = DomReadUtil.parse(inputStream);

The above code will give you Premature End Of File - SaxParseException.Because we have opened the inputStream and Read the contents.when trying to build the Doc from the stream,its already read.so there is premature end of file