Question

What is causing this error? I believe it is an incorrect accept header. Shouldn’t the jquery ajax method set that to the correct value when datatype: ‘json’?

406 Not Acceptable

Here’s my Spring Controller mapping:

    @RequestMapping(value={"/{ID}"}, method=RequestMethod.GET)
public @ResponseBody Double getRating(@PathVariable(value="ID") final Long id, 
        @RequestParam Long rating) {
    Double ratingResult = rate.get_rating(id);
    return ratingResult;
}

Here’s my javascript:

    $.ajax({
    type:'GET',
    url: '/ratings/' + ID + '?rating=' + rating,
    datatype: 'json',
    success: function(data){
        var obj = jQuery.parseJSON( data );
        var ratingResult = obj.ratingResult;
    });

My accept header value is */*

Answer 1

Please verify the server side:

But if you have incorrect response content type it supposed to be application/json, remember what you need to add jackson to your /lib directory.

In your serlvet-name.xml file.
And please use firebug to see the json notation if you can catch the object response in your console.

Please verify the client side:

Examine your request headers:

...
dataType: 'json',
...

Accept /
Accept: application/json, text/javascript, /; q=0.01
This will explicitly tell the server side that you are expecting JSON.

And… check this: http://www.checkupdown.com/status/E406.html