ModelAttribute is not getting set after forcing a download

Question

Adding an object to a ModelAndView in a Spring controller after forcing a download does not seem to work.

Code at Controller method

 ModelAndView view = new ModelAndView("");
 view.setViewName("pom-upload");
 view.addObject("uploadStatus", "Uploaded pom has been successfully processed!");
 response.setHeader("Content-Disposition", "attachment; filename=pom.xml");
 IOUtils.copy(inputStreamToDownload, response.getOutputStream());
 response.flushBuffer();
 return view;

I get the file downloaded successfully. But when I try to access the "uploadStatus" message in my JSP like

<c:out value="${uploadStatus}"></c:out>

or

div id="status-message" class="alert alert-success" role="alert">${uploadStatus}</div>

I do not get the message from ${uploadStatus}

What could the reason be and how would I fix this?

You can't return an HTML page AND a file download in the same response. Please explain what you're trying to accomplish and why. — Neil McGuigan, Mar 23 '15 at 17:15
@NeilMcGuigan I am just trying to show a success message on the page after the download. — Prasanna, Mar 23 '15 at 17:17

score 2 · Accepted Answer · edited May 23 '17 at 11:43

2

Ok, it sounds like you want to display a message to the user after they have downloaded a file. A couple options.

User clicks download link. This goes to success page. Success page uses Refresh header or javascript to initiate download. So success comes a little early.
See Detect when browser receives file download for some ideas on detecting when the browser gets the download.

edited May 23 '17 at 11:43

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answered Mar 23 '15 at 17:21

Neil McGuigan

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ModelAttribute is not getting set after forcing a download

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