C# Newtonsoft.Json.dll json数据格式上传下载解析

Posted 云辰

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前提需要导入Newtonsoft.Json.dll

 

1.创建实体输入json参数对象

 [JsonObject(MemberSerialization.OptOut)]
    class GateSignInputInfo
    {
        /// <summary>
        /// 考场代号
        /// </summary>
        public string kcdh { get; set; } = string.Empty;

        /// <summary>
        /// 查询当前时间后数据
        /// </summary>
        public string gxsj { get; set; } = string.Empty;
    }

2.创建实体Json返回参数对象

 [JsonObject(MemberSerialization.OptOut)]
    class ResultInfo
    {
        /// <summary>
        /// 返回码
        /// 0失败1成功
        /// </summary>
        public int errorcode { get; set; } = 0;

        /// <summary>
        /// 提示信息
        /// </summary>
        public string message { get; set; }

        /// <summary>
        /// 数据信息
        /// </summary>
        public object data { get; set; }
    }

3.创建json返回对象内的数据

 [JsonObject(MemberSerialization.OptOut)]
    class GateSignOutputInfo
    {
        /// <summary>
        /// 签到序号
        /// </summary>
        public string qdxh { get; set; }
        /// <summary>
        /// 姓名
        /// </summary>
        public string xm { get; set; }
        /// <summary>
        /// 身份证明号码
        /// </summary>
        public string sfzmhm { get; set; }
        /// <summary>
        /// 签到时间
        /// </summary>
        public string qdsj { get; set; }
    }

4.将Json数据序列化

          // 生成JSON数据

            GateSignInputInfo inputInfo = new GateSignInputInfo
            {
              kcdh = this.Kcdh
            };

                    string json = JsonConvert.SerializeObject(inputInfo);

5.构建Json请求,传送数据

  #region[构建请求,获取数据]
    

      /// <summary>
      /// 根据url地址传递json数据
      /// </summary>
      /// <param name="url">目标地址</param>
      /// <param name="json">json数据</param>
      /// <param name="output">返回json数据</param>
      /// <returns>成功响应为true</returns>

        private bool UploadResult(string url, string json, out string output)
        {
            try
            {
                HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
                request.Method = "POST";
                request.ContentType = "application/json";

                using (Stream requestStream = request.GetRequestStream())
                {
                    using (StreamWriter sw = new StreamWriter(requestStream, Encoding.GetEncoding("GBK")))
                    //using (StreamWriter sw = new StreamWriter(requestStream))
                    {
                        sw.Write(json);
                    }
                }

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                using (Stream responseStream = response.GetResponseStream())
                {
                    using (StreamReader sr = new StreamReader(responseStream))
                    {
                        output = sr.ReadToEnd();
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"访问失败:{url} \\r\\n{ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                output = ex.Message;
                return false;
            }

            return true;
        }
        #endregion

6.反序列Json数据,解析数据

             if (UploadResult(this.RequestByKS, json, out string output))
                    {
                        ResultInfo resultInfo = JsonConvert.DeserializeObject<ResultInfo>(output);
                        if (resultInfo.errorcode == 0)
                        {
                            labelHelp.Text = $"{resultInfo.message}";
                            return;
                        }
                        else
                        {
                            List<GateSignOutputInfo> outputInfos = JsonConvert.DeserializeObject<List<GateSignOutputInfo>>(resultInfo.data.ToString());
                            GateSignOutputInfo info = outputInfos.Find(x => x.sfzmhm == textPersonalCard.Text);
                            if(info == null)
                            {
                                labelHelp.Text = $"尚未通过门禁,无法录入";
                                return;
                            }
                        }
                    }

 

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