C# Newtonsoft.Json.dll json資料格式上傳下載解析
阿新 • • 發佈:2021-06-24
前提需要匯入Newtonsoft.Json.dll
1.建立實體輸入json引數物件
[JsonObject(MemberSerialization.OptOut)] class GateSignInputInfo { /// <summary> /// 考場代號 /// </summary> public string kcdh { get; set; } = string.Empty; /// <summary> /// 查詢當前時間後資料 /// </summary>public string gxsj { get; set; } = string.Empty; }
2.建立實體Json返回引數物件
[JsonObject(MemberSerialization.OptOut)] class ResultInfo { /// <summary> /// 返回碼 /// 0失敗1成功 /// </summary> public int errorcode { get; set; } = 0; /// <summary>/// 提示資訊 /// </summary> public string message { get; set; } /// <summary> /// 資料資訊 /// </summary> public object data { get; set; } }
3.建立json返回物件內的資料
[JsonObject(MemberSerialization.OptOut)] class GateSignOutputInfo {/// <summary> /// 簽到序號 /// </summary> public string qdxh { get; set; } /// <summary> /// 姓名 /// </summary> public string xm { get; set; } /// <summary> /// 身份證明號碼 /// </summary> public string sfzmhm { get; set; } /// <summary> /// 簽到時間 /// </summary> public string qdsj { get; set; } }
4.將Json資料序列化
// 生成JSON資料
GateSignInputInfo inputInfo = new GateSignInputInfo
{
kcdh = this.Kcdh
};
string json = JsonConvert.SerializeObject(inputInfo);
5.構建Json請求,傳送資料
#region[構建請求,獲取資料]
/// <summary>
/// 根據url地址傳遞json資料
/// </summary>
/// <param name="url">目標地址</param>
/// <param name="json">json資料</param>
/// <param name="output">返回json資料</param>
/// <returns>成功響應為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($"訪問失敗:{url} \r\n{ex.Message}", "錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error); output = ex.Message; return false; } return true; } #endregion
6.反序列Json資料,解析資料
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 = $"尚未通過門禁,無法錄入"; return; } } }