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问题:

Going slightly crazy here. I'm making an Ajax call using jQuery.post as follows:

  $.post('php/print.php',{data:dS},function(res){...  },"text");

I'm returning from print.php (as a test):

header("Content-type: application/vnd.ms-word");
header("Content-Disposition: attachment;Filename=test.doc");

echo "<html>";
echo "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=Windows-1252\">";
echo "<body>";
echo "Testing-2-3!";
echo "</body>";
echo "</html>";

The data is coming through fine according to Firebug, including the headers. But how do I get the browser (Firefox, in this instance) to prompt the user to save an attachment?

Thanks.

回答1:

It's simply not possible. AJAX requests never cause user prompts.

However, you can simply make the request return e.g. JSON or plaintext containing the URL and then use location.href = ...; to redirect to it; this will result in the prompt you are looking for.

If the request always results in a file download, you could also consider using a regular form and not using AJAX at all; if the response triggers a download dialog the previous page will remain in the browser window anyway.

回答2:

Why you do not link straight to print.php

and call php output to the browser using this code

$fp = fopen("php://output", 'w');
header("Content-type: application/vnd.ms-word");
header("Content-Disposition: attachment;Filename=test.doc");
$fp = fopen("php://output", 'w');
fwrite($fp,"your content here");
fclose($fp);