I am using a Tapestry service to provide download of Jasperreports
generated PDF reports. Here is the code that generates the report (based
on code available on this list):
=====================================
byte[] pdfData = JasperExportManager.exportReportToPdf(jasperPrint);
HttpServletResponse response = cycle.getRequestContext().getResponse();
response.setContentType("application/pdf");
response.setHeader("Content-Disposition",
"attachment; filename=\""
+tUtil.extractFilename(fileBasename) +
".pdf\"");
response.setContentLength((int) pdfData.length);
ServletOutputStream out = response.getOutputStream();
out.write(pdfData, 0, pdfData.length);
out.flush();
out.close();
=======================================
This works for a single PDF report. I need to provide download of
multi-part report. I tried multipart MIME using the following code:
========================================
HttpServletResponse response = cycle.getRequestContext().getResponse();
ServletOutputStream out = response.getOutputStream();
response = cycle.getRequestContext().getResponse();
response.setHeader("Content-Type", "Multipart/mixed;
boundary=MIME_boundary;
type=application/pdf;start=\"<[EMAIL PROTECTED]>\"");
out.println("--MIME_boundary");
byte[] pdfData;
int i;
for(i=0; i< reportFile.length; i++ )
{
// add context path to get the complete filesystem path
String fileBasename = tUtil.getContextRealPath(cycle) +
System.getProperty("file.separator") + reportFile[i];
logger.debug("generateMultiPageReport: processing "+reportFile[i]);
jasperPrint = JasperFillManager.fillReport(fileBasename+".jasper",
params, ds);
pdfData = JasperExportManager.exportReportToPdf(jasperPrint);
out.println("Content-Disposition: "+
"attachment; filename=\"" +
tUtil.extractFilename(fileBasename) +
".pdf\"");
out.println("Content-Type: "+"application/pdf");
out.println("Content-ID: "+ "<[EMAIL PROTECTED]>");
//response.setContentLength( (int) pdfData.length);
out.write(pdfData, 0, pdfData.length);
out.println("--MIME_boundary;");
}
out.flush();
out.close();
============================================================
Upon download, the PDF code simply appears raw in the browser. I tried
Content-Type: Multipart/Related but got the same result.
How can I download multiple PDFs, each with its own Content-Disposition:
and have the browser present multiple "Save as" dialogs? Mail readers
like Thurderbird know how to handle multipart messages; I have a hunch
that browsers may not be able to. For the moment I have multiple submit
buttons each tied to a PDF report download. I am using Tapestry 3.0.3.
Sohail Aslam
sohail dot aslam at gmail dot com
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
