Ajax and status 302

Question

I'm having a problem with ajax (and/or jQuery ajax) and status 302.

This is what I am trying:

var xhr = new XMLHttpRequest();
xhr.open("GET", 'some_page_that_I_cant_change.php');
xhr.onreadystatechange = function(){
    console.log(xhr.readyState, xhr.status);
};
xhr.send(null);

The some_page_that_I_cant_change.php redirects to a .bin with 302 code. I do not want to download this file, I just want know the path to the file. Example:

./some_page_that_I_cant_change.php
./path/to/bin/file.bin << I wan't only this path as string

The problem is that Chrome automatically redirects to the file, without telling me the path to script. Is there a workaround for this?

score 2 · Accepted Answer · answered Jun 09 '11 at 20:50

2

If you use a HEAD request instead of a GET request, I suspect that will do what you want. You should only see headers in the response, no response body (i.e., no .bin will download).

answered Jun 09 '11 at 20:50

Platinum Azure

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Thanks. But it don't works on Chrome. It continues to download the file. But, I tried to change to "`async:false`" and have a surprise: the file don't is downloaded, instead, throw a exception `"NETWORK_ERR: XMLHttpRequest Exception 101"`. I can't reproduce on jsFiddle, but the header that I want, I can't get too, only simple headers ([code here](http://jsfiddle.net/RL22m/)) – David Rodrigues Jun 09 '11 at 21:12
That's silly. Chrome shouldn't download a resource with a HEAD call :-( I haven't got any other ideas honestly, sorry. – Platinum Azure Jun 09 '11 at 21:27
No problems. Thanks anyway. I up too because can help someone with similar problems. – David Rodrigues Jun 10 '11 at 00:32

score 0 · Answer 2 · answered Nov 27 '13 at 09:18

In a word: I don't think you can do that cause of HTTP protocol.
HTTP protocol([1]:http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html) stipulate 302 means redirect URI, and browsers follows.So,the javascript can't get the redirect response, just get final response.

So,You have to get path by response body.

score 0 · Answer 3 · edited May 23 '17 at 10:27

0

There's an older thread about exactly the same topic with solutions and work arounds: How to manage a redirect request after a jQuery Ajax call

edited May 23 '17 at 10:27

Community

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answered Jun 21 '11 at 10:51

Adriaan Tijsseling

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Ajax and status 302

3 Answers3

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