title: document has no pages with itext
body: <pre><code>&lt;%
  OutputStream output=response.getOutputStream();
  response.setContentType("application/pdf");
  response.setHeader("Content-Disposition", "inline; filename=details.pdf");
  try{
      Document document = new Document();
  PdfWriter writer=PdfWriter.getInstance(document, output);
  document.open();
  XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
  Class.forName("com.mysql.jdbc.Driver");
  Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/a", "root", "root");
  Statement st=con.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
  List arrlist = new ArrayList();
  ResultSet rs=st.executeQuery("Select * from user_start1");
   while(rs.next()){
   arrlist.add(rs.getString("data"));
   }  
  for(int i=0;i&lt;12;i++){
    String str =(String) arrlist.get(i);
    System.out.println(str); 
    worker.parseXHtml(writer, document, new StringReader("helloworld"));
  }
  document.close();
  writer.flush();
  writer.close();
  output.close();
  }catch(IOException e){e.printStackTrace();} 
  %&gt;
  </code></pre>
  
  <p>throws an error</p>
  
  <pre><code>SEVERE: Servlet.service() for servlet [jsp] in context with path [/chieflegis] threw exception [ExceptionConverter: java.io.IOException: The document has no pages.] with root cause
  java.io.IOException: The document has no pages.
      at com.itextpdf.text.pdf.PdfPages.writePageTree(PdfPages.java:113)
      at com.itextpdf.text.pdf.PdfWriter.close(PdfWriter.java:1217)
      at com.itextpdf.text.pdf.PdfDocument.close(PdfDocument.java:807)
      at com.itextpdf.text.Document.close(Document.java:416)
      at org.apache.jsp.print_jsp._jspService(print_jsp.java:112)
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
      at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
      at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
      at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
      at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      at java.lang.Thread.run(Thread.java:724)
  </code></pre>
  
  <p>I have used the same xmlworker previously but never had any errors.even hellowworld isnt displayed.please help</p>