Download a file from Servlet using Ajax

ajax servlets download save-as
Vinay picture Vinay · Aug 17, 2010 · Viewed 23.8k times · Source

I have created a zip file in my servlet. Now I would like to trigger that servlet using Ajax and prompt the download dialog to the user. I can trigger the servlet, but I don't know how to get the save dialog. How can I achieve this?

Answer

RoToRa picture RoToRa · Aug 17, 2010

You can't "download a file using AJAX". AJAX is about downloading data from a server for JavaScript to process.

To let the user download the file either use a simple link to the file/servlet, or if you really, really need to use JavaScript, then assign the URL to document.location.href.

Also you need to make sure that the server (or in this case the servlet) sends the appropriate MIME type, in case of a ZIP file most likely application/zip.

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