【C#】ajax接收JsonResult返回字符串后如何使用_c# jsonresult

作者：你好赵伟 | 2024-07-21 17:41:43

踩

c# jsonresult

应用场景：

通过ajax向控制器传值并接收返回值于data中，且返回数据需在前端输入框中显示

后端：


[AllowAnonymous]
        public JsonResult getCardReader()
        {
            //StreamReader reader = new StreamReader(Path, System.Text.Encoding.GetEncoding("UTF-8"));
            //启动卡号读卡器ReadCardState 0禁用1检测2完成
            List<CRKCommunication> CRKCom = CRKCommunicationservice.GetModels(p => true).ToList();
            //if (CRKCom.Count > 0)
            //{
            //    CRKCom[0].ReadCardState = 1;
            //    CRKCommunicationservice.Update(CRKCom[0]);
            //}
            CRKCom[0].ReadCardState = 1;
            CRKCommunicationservice.Update(CRKCom[0]);
 
            //文件路径 取字符串
            string Path = @"C:\Users\Administrator\Desktop\kh.txt";
            string kno = System.IO.File.ReadAllText(Path, System.Text.Encoding.Default);
 
            string SmartCardNumber = "";
            string Number = "41018105" + kno + DateTime.Now.ToString("yyyyMMdd");
            //智慧卡号列表（数据库中与当前时间卡号相同，且卡号状态不为为使用中 的数据）
            List<card_info> cardList = card_infoservice.GetModels(p => true).Where<card_info>(p => p.Card_State != "1" && p.BusinessNumber.Substring(0, Number.Length) == Number).ToList();
            SmartCardNumber = Number + (cardList.Count + 1).ToString("000");
 
 
            var res = new JsonResult();
            res.Data = "{\"kno\"" + ":" + kno + ",\"SmartCardNumber\"" + ":" + "\"" + SmartCardNumber + "\"" + "}"; 
            return res;
        }

前端 ajax：


<html>
 <head>
  <script> 
form.on("submit(CardReader)", function (data) {
                //layer.msg(JSON.stringify(data.field));
                laycy.ajax({
                    url: '/StockOI/getCardReader',
                    type: 'post',
                    data: data.field,
                    dataType: "json",
                    success: function (da) {
                        var obj = JSON.parse(da)//将字符串转换为json对象
                        form.val("rmdj", {
                             //"输入框Name": json键值
                            "card0": obj.kno
                            , "SmartCardNumber": obj.SmartCardNumber
                        });
                    },
                    error: function (e) {
                        layer.alert("保存失败！请确认参数填写是否正确！");
                    }
                });
                return false;
            });
<script></script>
 </head>
 <body></body>
</html>

JsonResult返回json格式的字符串，前端ajax接收后解析为json对象并对输入框进行赋值

声明：本文内容由网友自发贡献，不代表【wpsshop博客】立场，版权归原作者所有，本站不承担相应法律责任。如您发现有侵权的内容，请联系我们。转载请注明出处：https://www.wpsshop.cn/w/你好赵伟/article/detail/861707