string strPost = new Utils().getPost(context);
            var obj = new { name = "",age = "" };
            obj = JSONHelper.JsonToObject(strPost,obj);

        public string getPost(HttpContext context)
        {
            return new StreamReader(context.Request.InputStream).ReadToEnd();
        }

        public static T JsonToObject<T>(string json,T anonymousTypeObject)
        {
            T t = JsonConvert.DeserializeAnonymousType(json,anonymousTypeObject);
            return t;
        }

注意：前台传的json格式才能被getPost读取，或者自己直接把strPost的值改成json内容