0
我有一個JSON字符串,它看起來像下面,DataContractJsonSerializer反序列化JSON
{
"ErrorDetails":null,
"Success":true,
"Records":[
{
"Attributes":[
{
"Name":"accountid",
"Value":null
},
{
"Name":"accountidname",
"Value":null
}
],
"Id":"9c5071f7-e4a3-e111-b4cc-1cc1de6e4b49",
"Type":"contact"
}
]
}
我用下面的反序列化這個字符串,
DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(JSONPackage));
object objResponse = jsonSerializer.ReadObject(response.GetResponseStream());
JSONPackage jsonResponse = objResponse as JSONPackage;
而且我JSONPackage看起來像以下,
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CommonLibs.JSONObjects
{
public class JSONPackage
{
public string ErrorDetails { get; set; }
public string Success { get; set; }
public List<Record> Records { get; set; }
}
}
和記錄看起來像這樣,
個using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;
namespace CommonLibs.JSONObjects
{
public class Record
{
public List<Attributes> Attributes { get; set; }
public string Id { get; set; }
public string Type { get; set; }
}
}
屬性的樣子,
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;
namespace CommonLibs.JSONObjects
{
public class Attributes
{
public AttributeItem AttributeItem { get; set; }
}
}
而且最後AttributeItem如下所示,
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;
namespace CommonLibs.JSONObjects
{
public class AttributeItem
{
public string Name { get; set; }
public string Value { get; set; }
}
}
然而,這似乎並不工作。
當我這樣做,
Console.WriteLine(jp.Records[0].Attributes[0].AttributeItem.Name);
我得到一個NullPointerException(jp
是JSONPackage對象)。
但是,如果我這樣做,
Console.WriteLine(jp.Records[0].Attributes.Count) i get "2"
能否請您協助?