Merging PDF document with XML file using Java class/servlet

[ErikaW]

Hi all, I've tried to google this but could not find a clear solution. I have a Web application developed in JDevloper using mostly html and Javascript. I have a pre-defined PDF form which I merge with a XML file. I want to be able to save the form automatically for the User so as to prevent typing errors i.e. c:/erikaTemp/subFolder/erika_12345.pdf but from what I've seen this can only be done via the the 'File download' pop up which only accepts a file name and even then when I try to open the document I get an error saying 'Adobe could not read 'filename' because.....If I don't include

response.setHeader("Content-disposition", "attachment; filename=\"erikaForm.pdf\"");

then the PDF forms opens without a problem. Could anyone let me know if there is a way to save the PDF form before it opens and if I have any error in my code?

Thanks

Here is my code

package blAdmin;
import com.softwareag.entirex.aci.Broker;
import java.io.File;
import java.util.*;
import java.io.InputStream;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;
import NSFASGenInfo.*;
 
public class NSFASLoanAgreement extends HttpServlet
{
  public void doPost(HttpServletRequest request, HttpServletResponse response) {
    doGet(request, response);
  }
 
  public void doGet(HttpServletRequest request, HttpServletResponse response) {
        try{
            Utilities.setEtbIp(request.getServerName());
            String protocol=request.getProtocol();
            if (protocol.toUpperCase().startsWith("HTTPS")) {
                protocol="https";
            } else {
                protocol="http";
            }
            String urlBase=protocol+"://"+request.getServerName()+":"+request.getServerPort()+
                request.getContextPath()+"/";
 
            String usNumber = request.getParameter("pInputUsnr");
 
            InputStream stream = getServletContext().getResourceAsStream("/htdocs/erikaTemp/testData.xml");
 
            StringBuffer responseString = new StringBuffer();
            response.setContentType("application/vnd.adobe.xdp+xml");
            response.setHeader("Content-disposition", "attachment; filename=\"loanAgreementForm.pdf\"");
            responseString.append( "<?xml version='1.0' encoding='UTF-8'?>");
            responseString.append("<?xfa generator='AdobeDesigner_V7.0' APIVersion='2.2.4333.0'?>");
            responseString.append("<xdp:xdp xmlns:xdp='http://ns.adobe.com/xdp/'>");
            responseString.append("<xfa:datasets xmlns:xfa='http://www.xfa.org/schema/xfa-data/1.0/'>");
            responseString.append("<xfa:data xfa:dataNode='dataGroup'>");
 
            responseString.append(getString(getServletContext(), usNumber,stream)).append("/n");
            String serverInfo = request.getServerName(); //+ ":" + request.getServerPort();
 
            responseString.append("</xfa:data>");
            responseString.append("</xfa:datasets>");
            responseString.append("<pdf href='").append(urlBase).append("htdocs/erikaTemp/testForm.pdf' xmlns='http://ns.adobe.com/xdp/pdf/' />");
            responseString.append("<xfdf xmlns='http://ns.adobe.com/xfdf/' xml:space='preserve'>");
            responseString.append("<annots/>");
            responseString.append("</xfdf>");
            responseString.append("</xdp:xdp>");
            stream.close();
            response.getWriter().write(responseString.toString());
            response.getWriter().flush();
        }catch(Exception exa){
            exa.printStackTrace();
            try{
              response.setContentType("text/html");
              response.getWriter().write(exa.getMessage());
              response.getWriter().flush();             
            }catch(Exception ex){
            }
        }
    }
 
  public static String getString(ServletContext context, String usNumber, InputStream stream) throws Exception {
        try {
            SAXReader reader = new SAXReader();
            Document document = reader.read(stream);
 
            Dbj502n1 natd = new Dbj502n1(new Broker(Utilities.getEtbIp(), "JavaUser"), "RPC/SRV1/CALLNAT");
            natd.setDbj502n1I_us_nommer(usNumber);
            natd.dbj502n1();
 
            GenericInformationServiceStub gis = new GenericInformationServiceStub();
            GenericInformation gi = gis.getGenericInformation(natd.getDbj502n1O_id());
 
            fillDocument(document.getRootElement(), natd, gi);
 
            return document.asXML().substring(38);
 
        } catch (Exception exa) {
            exa.printStackTrace();
            throw exa;
        }
 
    }
 
    private static void fillDocument(Element rootElement, Dbj502n1 dbj502n1, GenericInformation gi) {
 
        String studAccNo = String.valueOf(gi.getAccountNo());
        String rate = gi.getInterestRate();
 
        ((Node) DocumentHelper.createXPath("//gender").selectNodes(rootElement).get(0)).setText(dbj502n1.getDbj502n1O_gender());
           }
}