反序列化包含c#中的数组的Json数据 [英] deserializing Json data which contain an array in c#
问题描述
我在反序列化Json消息中的另一个列表时遇到问题. 我的代码可以很好地读取诸如Project,Ref,Latitude之类的数据... 我也尝试了两种方法:列表和数组.
I have a problem for deserializing another list inside Json message. My code work fine for read data like Project, Ref, Latitude ... I tried both method too : list and array.
例如我的JSON消息:
For example my JSON message:
[{
"Project":"example",
"Ref":"001BC50C70000A21",
"Latitude":43.643166,
"Longitude":1.454769,
"ParkList": [{
"Id":"001BC50C70000A21P1",
"State":1,
"DateTime":"2018-02-15T08:07:18.987Z"
}, {
"Id":"001BC50C70000A21P2",
"State":1,
"DateTime":"2018-02-15T08:11:41.824Z"
}]
}]
我的课:
[DataContract]
public class KMessage
{
private string ProjectField;
private string RefField;
private float LatitudeField;
private float LongitudeField;
public List<TParkList> ParkList { get; set; }
[DataMember]
public string Project
{
get
{
return this.ProjectField;
}
set
{
this.ProjectField = value;
}
}
[DataMember]
public string Ref
{
get
{
return this.RefField;
}
set
{
this.RefField = value;
}
}
[DataMember]
public float Latitude
{
get
{
return this.LatitudeField;
}
set
{
this.LatitudeField = value;
}
}
[DataMember]
public float Longitude
{
get
{
return this.LongitudeField;
}
set
{
this.LongitudeField = value;
}
}
}
[DataContract]
public class TParkList
{
private string IdField;
private int StateField;
private string DateTimeField;
[DataMember]
public string Id
{
get
{
return this.IdField;
}
set
{
this.IdField = value;
}
}
[DataMember]
public int State
{
get
{
return this.StateField;
}
set
{
this.StateField = value;
}
}
[DataMember]
public string DateTime
{
get
{
return this.DateTimeField;
}
set
{
this.DateTimeField = value;
}
}
}
以及测试的主要代码.因此,"kmsg.ParkList"的列表为空:
And the main code for test. So the list is empty for "kmsg.ParkList":
[ServiceContract]
public interface IKService
{
[DataContractFormat]
[OperationContract]
[WebInvoke(
Method = "POST",
BodyStyle = WebMessageBodyStyle.Bare,
RequestFormat = WebMessageFormat.Json,
ResponseFormat = WebMessageFormat.Json,
UriTemplate = "/state")]
void Service(Stream KStream);
}
public class KService : IKService
{
public void Service(Stream KStream)
{
try
{
if (KStream == null)
{
MessageBox.Show("WebService message is NULL");
}
else
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<KMessage>));
var obj = (List<KMessage>)serializer.ReadObject(KStream);
foreach (KMessage kmsg in obj)
{
MessageBox.Show("Project", kmsg.Project);
foreach (var pklist in kmsg.ParkList)
{
MessageBox.Show("List - Id", pklist.Id.ToString());
}
}
}
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}
谢谢您的帮助.
推荐答案
您可以使用Visual Studio提供的将json转换为模型类的功能
You can use function provided by Visual studio which convert your json into a model class
转到:编辑->粘贴特殊->将JSON粘贴为类
此功能创建的模型类将解决您的问题
Model class created by this feature will solve your problem
我使用了此功能并为您创建了模型类.
I used this feature and created model class for you.
//Use respective attributes
public class KMessage
{
public string Project { get; set; }
public string Ref { get; set; }
public float Latitude { get; set; }
public float Longitude { get; set; }
//I guess here is the problem, instead of array you can use list
public Parklist[] ParkList { get; set; }
}
public class Parklist
{
public string Id { get; set; }
public int State { get; set; }
public DateTime DateTime { get; set; }
}
我想您在反序列化时丢失了一些东西,这是您可以反序列化json字符串的方法.我正在使用 Newtonsoft.Json 库.
I guess you are missing something, while deserialization, here is how you can deserialize your json string. I am using Newtonsoft.Json library.
string jsonString = "[{\"Project\":\"example\", \"Ref\":\"001BC50C70000A21\", \"Latitude\":43.643166, \"Longitude\":1.454769, \"ParkList\": [{\"Id\":\"001BC50C70000A21P1\", \"State\":1, \"DateTime\":\"2018-02-15T08:07:18.987Z\"}, {\"Id\":\"001BC50C70000A21P2\",\"State\":1,\"DateTime\":\"2018-02-15T08:11:41.824Z\"}]}]";
//You used [square brackets] at first, so we need to deserialize with list
List<KMessage> kMsg = JsonConvert.DeserializeObject<List<KMessage>>(jsonString);
foreach (Parklist item in kMsg[0].ParkList)
{
Console.WriteLine("Id: " + item.Id + " State: " + item.State + " DateTime: " + item.DateTime);
}
Output:
Id: 001BC50C70000A21P1 State: 1 DateTime: 2/15/2018 8:07:18 AM
Id: 001BC50C70000A21P2 State: 1 DateTime: 2/15/2018 8:11:41 AM
概念证明: .net提琴手
这篇关于反序列化包含c#中的数组的Json数据的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!