Json allowget error

Question

This error comes up in our MVC app randomly. Sometimes doing the same exact thing it won\'t sometimes, it will. Does anyone know if this has to do with anything that could be a

Answer 1

It seems that you call sometime the controller action per HTTP GET. To be able to return JSON results you should use code like

return Json(data, JsonRequestBehavior.AllowGet);

Answer 2

You should read http://haacked.com/archive/2009/06/24/json-hijacking.aspx/ before bypassing these security controls.

If you only expose your JSON data in response to a Http POST, then you are not vulnerable to this attack.

You can simply annotate your JSON action with [HttpPost] and in the client do something like

$.post('/blag/JSON', function (data) {
       //do something with my json data object here

});

Answer 3

Answer for your question was in the stack trace. "JsonRequestBehavior to AllowGet"

So use it in your Controller as:

return Json(data, JsonRequestBehavior.AllowGet)

Answer 4

return Json(PartialView("index").ToJsonObject(this), JsonRequestBehavior.AllowGet);