Asp.net mvc将json字符串传到后台为何后台无法jie'shou

                    type: 'Post',
                    url: "/Home/exp",
                    dataType: 'json',
                    data: a,//json
                    contentType: "application/json;charset=utf-8",

                    success: function (data) {
                        console.log(data.Message);
                    },
                    error: function (e) {
                        alert("发送失败");
                    }
                });

```     public JsonResult exp(JsonResult code) {
            object d = new { Message = code };
            return Json(d, JsonRequestBehavior.AllowGet);
        }

不要用jsonresult，它是用来返回json的
你需要写一个和你json一样结构的类来接收
参考：https://stackoverflow.com/questions/15317856/how-do-you-post-a-json-file-to-an-asp-net-mvc-action/15318612