title: Chrome pdf api doesn't download ServletOutputStream jasper pdf file
body: <p>I'm trying to show a web printed report made with JasperReports 6.2.0 in an application with JSF 2.2.
  Happens that the report is correctly shown, in a new tab, after setting target="_blank" on my h:form, but the download button doesn't work.</p>
  
  <p>Here's the code:</p>
  
  <pre><code>HttpServletResponse response = (HttpServletResponse) FacesContext context = FacesContext.getCurrentInstance().getExternalContext().getResponse();
  response.setContentType("application/pdf");
  ServletOutputStream responseStream = response.getOutputStream();
  ByteArrayInputStream relatorioSourceStream = new ByteArrayInputStream(reportJasper);
  JasperPrint jp = JasperFillManager.fillReport(relatorioSourceStream, parameters, getConnection());
  File file = new java.io.File(path);
  if (file.exists()) {
    file.delete();
  } else if (file.getParentFile() != null) {
    file.getParentFile().mkdirs();
    file.createNewFile();
  }
  JRPdfExporter exporter = new JRPdfExporter();
  exporter.setExporterInput(new SimpleExporterInput(jp));
  exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(file));
  SimplePdfExporterConfiguration conf = new SimplePdfExporterConfiguration();
  exporter.setConfiguration(conf);
  exporter.exportReport();
  
  InputStream is = new FileInputStream(file);
  int read = 0;
  byte[] bytes = new byte[4096];
  while ((read = is.read(bytes)) != -1) {
    responseStream.write(bytes, 0, read);
  }
  responseStream.flush();
  responseStream.close();
  </code></pre>
  
  <p>Happens that the report is correctly shown, but the download won't do anything.</p>
  
  <p>It's not quite a "save as" option that I want to be shown when the report tab is loaded, It happens that the chrome api's download button tries to save my page (html) instead of saving the content as a .pdf file.</p>
  
  <p>Thanks in advance.</p>