Question

我的Windows Phone应用程序有一个来自JSON（Google Calendar的WebService）的集合。

我可以正确获取JSON，但是什么时候解析，得到一个错误： Error reading JArray from JsonReader. Current JsonReader item is not an array: StartObject. Path", line 1, position 1.

我不知道这是否是问题，但从未使用复杂的JSON。示例：JSON上的“tag”dateTime位于start的“内部”，另一个位于end内部。在我的收藏中，我如何定义这个？

JSON回复：

{
kind: "calendar#events",
etag: ""1416310700455000"",
summary: "desenvolvimentomobile@ff.com.br",
updated: "2014-11-18T11:38:20.455Z",
timeZone: "America/Sao_Paulo",
accessRole: "reader",
defaultReminders: [ ],
nextSyncToken: "CNjoxMGf",
    items: [
            {
              kind: "calendar#event",
              etag: ""283f00"",
              id: "sf00g1go9399gf",
              status: "confirmed",
              htmlLink: "https://www.google.com/calendar/event?eid=c2YwMGcxZ285Mzk5Z3YxcTU2Nml2dGl2b3MfiaWxlQGluZmFzc3RlYy5jb20uYnI",
              created: "2014-11-17T17:23:05.000Z",
              updated: "2014-11-17T17:23:05.362Z",
              summary: "Exemplo 1",
              creator: {
              email: "desenvolvimentomobile@ifc.com.br",
              displayName: "Infass silva",
              self: true
              },
              organizer: {
              email: "desenvolvimentomobile@ifc.com.br",
              displayName: "Infass silva",
              self: true
              },
              start: {
              dateTime: "2014-11-17T17:00:00-02:00"
              },
              end: {
              dateTime: "2014-11-17T18:00:00-02:00"
              },
              iCalUID: "sf00g1go9399fvtivos@google.com",
              sequence: 0
              }
]}

C＃：

                DataContext = this;

                // String JSON
                string json1 = text;

                // Parse JObject
                JArray jObj1 = JArray.Parse(json1);

                Comp = new ObservableCollection<Compromisso>(
 jObj1.Children().Select(jo1 => jo1.ToObject<Compromisso>()));

            }
        }
    }

    public ObservableCollection<Compromisso> Comp { get; set; }

    public class Compromisso
    {
        public string summary { get; set; }
        public string dateTime { get; set; }
        public string location { get; set; }
        public string description { get; set; }
    }

Answer 1

最简单的方法是使用JSON来粘贴Visual Studio的粘贴功能：

首先，将您的JS对象转换为JSON字符串（例如，使用this tool）。将JSON输出复制到剪贴板并进入Visual Studio中的某个类。使用Edit > Paste Special > Paste JSON As Classes。

您应该获得以下输出：

public class Rootobject
{
    public string kind { get; set; }
    public string etag { get; set; }
    public string summary { get; set; }
    public DateTime updated { get; set; }
    public string timeZone { get; set; }
    public string accessRole { get; set; }
    public object[] defaultReminders { get; set; }
    public string nextSyncToken { get; set; }
    public Item[] items { get; set; }
}

public class Item
{
    public string kind { get; set; }
    public string etag { get; set; }
    public string id { get; set; }
    public string status { get; set; }
    public string htmlLink { get; set; }
    public DateTime created { get; set; }
    public DateTime updated { get; set; }
    public string summary { get; set; }
    public Creator creator { get; set; }
    public Organizer organizer { get; set; }
    public Start start { get; set; }
    public End end { get; set; }
    public string iCalUID { get; set; }
    public int sequence { get; set; }
}

public class Creator
{
    public string email { get; set; }
    public string displayName { get; set; }
    public bool self { get; set; }
}

public class Organizer
{
    public string email { get; set; }
    public string displayName { get; set; }
    public bool self { get; set; }
}

public class Start
{
    public DateTime dateTime { get; set; }
}

public class End
{
    public DateTime dateTime { get; set; }
}

使用以下代码，您可以反序列化它：

MemoryStream jsonStream = new MemoryStream(Encoding.UTF8.GetBytes(text));
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(Rootobject));
Rootobject rootObj = ser.ReadObject(jsonStream);

但是，我不确定这是否100％与您的JS对象一起使用，因为etag不仅被"包围，而是被""包围。我从未见过这个。

但是，它应该回答有关如何将JSON映射到类的问题。

如何正确使用JSON

1 个答案: