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Download file using ajax GET request

in Using jQuery • 2 years ago

Hi,
I'm trying to downloading a file using ajax GET reques, but nothig happens

This is the code:
$.ajax({
      url: "downloadAvviso.php",
      type: "GET",
      dataType: 'binary',

      success: function(result) {
        var url = URL.createObjectURL(result);
        var $a = $('<a />', {
          'href': url,
          'download': arg1,
          'text': "click"
        }).hide().appendTo("body")[0].click();

        URL.revokeObjectURL(url);
      }
    });

where arg1 is the name of the file to download and arg3 the server directory
Please, Can someone helps me?

Thanks in advance
Tegatti

Replies(10)

jakecigar

Re: Download file using ajax GET request

2 years ago

You are over-thinking it. The normal way is just a click on <a href="downloadAvviso.php"> where the PHP sets a mimetype that can't be handled by the browser. The browser then downloads it.

JΛ̊KE

tegatti

Re: Download file using ajax GET request

2 years ago

Hi Jake,

I've done as you've written, but after downloading file a would execute my home page.
If I run it just after downloading, the system just run home page and not execute dowload the file.
I've done in this way:
$("<form method=get action='downloadAvviso.php'><input type=hidden name=nome_file value='"+arg1+"'/><input type=hidden name=dimensioni_file value='"+arg2+"'/><input type=hidden name=dir value='"+arg3+"'/><input type=hidden name=Id value='"+arg4+"'/></form>").appendTo("body").submit();

$("<form method=post action='index.php'></form>").appendTo("body").submit();

Thanks
Tegatti

jakecigar

Re: Re: Download file using ajax GET request

2 years ago

I don't think you set the mimetype properly.

JΛ̊KE

tegatti

Re: Download file using ajax GET request

2 years ago

Jake,
I've also tried this:
echo "<a href=\"downloadAvviso.php?nome_file=$arrayLink[$num]&dimensioni_file=$dimensioni_file&dir=$dir&Id=$arrayId[$num]\">$arrayTitolo[$num]</a>";

and then in downloadAvviso.php :

header("Pragma: public");
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: public");
    header("Content-Type: application/txt");//tipo di applicatione
    header("Content-Description: File Transfer");//trasferimento file
    header("Content-type: Application/octet-stream");//forzare il downloadf
    header("Content-Disposition: attachment; filename=$file");
    header("Content-Description: Download PHP");
    header("Content-Length: $dimensioni_file");
    readfile($file);