XI sent an XML file to my Servlet(J2EE appl), how to display?

Question

Hi all!
I have a scenario like FIle->XI->J2EE appl.
How to test whether XI is sending XML file to my Servlet(J2EE appl). I have to display the same XML file as it is in browser using Servlet/JSP.
Code help is highly appreciated.
Thanks!

Answer 1

Hi Uma!
Thanks for your answer.
The code is not displaying any thing on browser.
I deployed the appl on Weblogic9.0 server. How to test whether XI is sending the XML file to my J2EE appl.
I have used NWDS2.0.9 for developing J2EE appl.
This is my application.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
  "http://java.sun.com/dtd/application_1_3.dtd">
<application>
    <display-name>HTTPReceiver_EAR</display-name>
    <description>EAR description</description>
    <module>
        <web>
            <web-uri>HttpReceiver.war</web-uri>
            <context-root>/Invoke</context-root>
        </web>
    </module>
</application>
This is my web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
    <display-name>WEB APP</display-name>
    <description>WEB APP description</description>
    <servlet>
        <servlet-name>DisplayRes</servlet-name>
        <servlet-class>com.abc.DisplayRes</servlet-class>
    </servlet>
    <servlet-mapping>
          <servlet-name>DisplayRes</servlet-name>
          <url-pattern>/DisplayRes/*</url-pattern>
     </servlet-mapping>
</web-app>
public class DisplayRes extends HttpServlet {
     public void doGet(HttpServletRequest requset, HttpServletResponse response) throws ServletException, IOException
          doWork(requset, response);
     public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
          doWork(req, resp);
     private void doWork(HttpServletRequest req, HttpServletResponse resp) throws IOException
          String path = null;
          Writer out = null;
          //PrintWriter out = null;
          PrintWriter p2=resp.getWriter();     
          //ServletOutputStream outp = resp.getOutputStream();
          //p2.println("This is doWork");
          try
               resp.setContentType("text/xml");
               out = resp.getWriter();
          //     out.println("hi");
               path = req.getPathInfo();
               //p2.println("path is"+ path);
               if(req.getContentLength() != -1){
               outputURI(req.getInputStream(), out);
          } catch (IOException ioe) {
               p2.println("IOException  "+  ioe);     
               //return;     
     //private void outputURI(InputStream resultStream, Writer out) {
          private void outputURI(InputStream resultStream, Writer out) {
          if (resultStream == null) {
//             no default file
//            logger.error("No File to return");
            return;
          try {
          DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
//            Class clazz = loader.loadClass("org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");
//            DocumentBuilderFactoryImpl factory = (DocumentBuilderFactoryImpl) clazz.newInstance();
//            DocumentBuilder parser = factory.newDocumentBuilder();
          parser.setEntityResolver(new ClassPathEntityResolver());
          printXML(parser.parse(resultStream), out);
          resultStream.close();
          } catch (Exception e) {
//            logger.error("Trying to parse the output " , e);
     //private void printXML(Document document, Writer writer) throws Exception {
          private void printXML(Document document, Writer writer) throws Exception {
          Transformer transformer = TransformerFactory.newInstance().newTransformer();
          Source source = new DOMSource(document);
          Result output = new StreamResult(System.out);
          transformer.transform(source, output);
//             Write as XML so that entity references can be resolved.
          if (writer != null) {
          transformer.transform(source, new StreamResult(writer));
Help is highly rewarded.
Thanks