[英]How do I parse a primitive of a Json File?
我有一個來自Get請求的以下JSON文件:
{
"vcalendar": [
{
"version": "2.0",
"prodid": " CalendarID",
"vevent": [
{
"uid": " EventID",
"dtstamp": "20180725T000000",
"status": "CONFIRMED",
"dtstart": [
"20180213",
{
"value": "DATE"
}
],
"dtend": [
"20180214",
{
"value": "DATE"
}
],
"summary": " Event subject",
"description": "Event description"
}
]
}
],
"success": true
}
在這種情況下,我想獲取dtstart和dtend原語編號為“ 20180213”和“ 20180214”,但是我無法按常規方式反序列化JSON File以獲得所需的信息。
要獲取其他值,我使用:
public class iCalendarFile
{
public List<iCalendar> vcalendar { get; set; }
}
public class iCalendar
{
public List<iCalendarEvent> vevent { get; set; }
}
public class iCalendarEvent
{
public string summary { get; set; }
public string description { get; set; }
public List<string> dtstart { get; set; }
public List<string> dtend { get; set; }
}
然后像這樣反序列化:
public static async void makeGetRequest(TraceWriter log) {
WebRequest request = WebRequest.Create(url);
request.Method = "GET";
request.ContentType = "application/x-www-form-urlencoded";
WebResponse response = request.GetResponse();
Stream dataStream = response.GetResponseStream();
StreamReader reader = new StreamReader(dataStream);
var result = reader.ReadToEnd();
var jsonObject = JsonConvert.DeserializeObject<iCalendarFile>(result);
foreach (iCalendar icalobject in jsonObject.vcalendar ) {
foreach (iCalendarEvent Object in icalobject.vevent)
{
foreach(String tmp in Object.dtstart){
log.Info(tmp);
}
}
}
reader.Close();
dataStream.Close();
response.Close();
}
我的錯誤是:
Newtonsoft.Json.JsonReaderException:解析值{時遇到意外字符。 路徑'vcalendar [0] .vevent [0] .dtstart [0]',第1行,位置238。位於Newtonsoft.Json.Json.JsonTextReader.ReadAsString()的Newtonsoft.Json.JsonTextReader.ReadStringValue(ReadType readType)。 .JsonReader.ReadForType(JsonContract合同,布爾hasConverter)
如果您有任何想法如何在dtstart中訪問值,我將不勝感激。 謝謝你的幫助!
第一次更改JSON Class( https://jsonutils.com/ )
#region JsonClass
public class Vevent
{
public string uid { get; set; }
public string dtstamp { get; set; }
public string status { get; set; }
public IList<object> dtstart { get; set; }
public IList<object> dtend { get; set; }
public string summary { get; set; }
public string description { get; set; }
}
public class Vcalendar
{
public string version { get; set; }
public string prodid { get; set; }
public IList<Vevent> vevent { get; set; }
}
public class iCalendarFile
{
public IList<Vcalendar> vcalendar { get; set; }
public bool success { get; set; }
}
#endregion
之后,您可以:
var jsonObject = JsonConvert.DeserializeObject<iCalendarFile>(sb);
for (int i = 0; i < jsonObject.vcalendar[0].vevent[0].dtstart.Count; i++)
{
Console.WriteLine(jsonObject.vcalendar[0].vevent[0].dtstart[i].ToString());
}
dtstart和dtend變量不能反序列化為字符串。
請嘗試將變量從List<object>
更改為List<string>
List<object>
如果僅需要dtstart / dtend值,則可以嘗試如下操作:
dynamic jsonObject = JsonConvert.DeserializeObject(result);
string dtstart = jsonObject.vcalendar[0].vevent[0].dtstart[0];
string dtend = jsonObject.vcalendar[0].vevent[0].dtstart[0];
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