写入json和读取json文件

        /// <summary>
        ///写入文件
        /// </summary>
        /// <param name="Stns"></param>
        /// <returns></returns>
        public ActionResult WriteJsonFile(string Stns)
        {
            string filepath = Server.MapPath("~/Content/json/setcamera.json");

            string[] stnList = Stns.Split(',');
            string output = Newtonsoft.Json.JsonConvert.SerializeObject(stnList, Newtonsoft.Json.Formatting.Indented);
            System.IO.File.WriteAllText(filepath, output);
            return Json(new { code = 200, message = "保存成功" });
        }

        /// <summary>
        ///读取文件
        /// </summary>
        /// <param name="Stns"></param>
        /// <returns></returns>
        public ActionResult ReadJsonFile()
        {
            string filepath = Server.MapPath("~/Content/json/setcamera.json");
            string json = string.Empty;
            using (FileStream fs = new FileStream(filepath, FileMode.OpenOrCreate, System.IO.FileAccess.ReadWrite, FileShare.ReadWrite))
            {
                using (StreamReader sr = new StreamReader(fs, Encoding.UTF8))
                {
                    json = sr.ReadToEnd().ToString();

                }
            }
            string[] stnList = JsonConvert.DeserializeObject<string[]>(json);
            return Json(stnList);
        }