On JQuery AJAX POST...request failed: URI too long (longer than 8190)

Question

I got the error:

request failed: URI too long (longer than 8190)

I've seen other posts on StackOverflow for this one. Those posts recommend:

• Not changing Apache settings (agree)
• Using post, not get
• Not using jsonp with post

I'm using jQuery's AJAX to POST:

    $.ajax({
        url: "test.php",
        dataType: "json",
        data: paras,
        type: "POST",
        success: function(ret){callback(ret);}
    });

It's my impression you can use json just not jsonp. Correct? If so, why might I still be getting the error?

Solution

You should try setting proccessData to false.

From the docs:

By default, data passed in to the data option as an object (technically, anything other than a string) will be processed and transformed into a query string, fitting to the default content-type "application/x-www-form-urlencoded". If you want to send a DOMDocument, or other non-processed data, set this option to false.

so to prevent the data being added to the url:

$.ajax({
    url: "test.php",
    dataType: "application/json",
    data: paras,
    type: "POST",
    proccessData: false, // this is true by default
    success: function(ret){callback(ret);}
});

Honestly, I thought this was automatic, but since your url is too long it's worth a shot.