我如何使用DataContractJsonSerializer反序列化动态键名 [英] How I can deserialize the dynamic key name using DataContractJsonSerializer

问题描述

我有一个Web服务，客户端程序可以将密钥发布到其Web方法之一，该方法将返回{"key-client-post"，"value-from-server-side"}，结构返回字符串的行是固定的，但是键名是动态的，它取决于客户端程序.

我的问题是如何使用DataContractJsonSerializer将返回字符串反序列化为.NET对象.

I have a web service, the client program can post a key to one of its web method, and the method will return {"key-client-post", "value-from-server-side"}, the structure of return string is fixed, but the key name is dynamic, it depends on the client program.

My question is how I can deserialize the return string to .NET object using DataContractJsonSerializer.

Thanks.

推荐答案

通常，基于数据协定的反序列化应与序列化结合使用.数据合同序列化器具有某些格式，并非所有数据都适合.您定义数据类并向其添加属性，这将定义格式元数据.在某些情况下，您可以设计一组数据类以匹配某些可用的数据格式.

请参阅:
http://msdn.microsoft.com/en-us/library/ms733127.aspx [ ^ ].

—SA

Normally, deserialization based on Data Contract should go in a pair with serialization. Data Contract serializers have certain format, not all data can fit it. You define data classes and add attributes to it, and this defines format meta-data. In some cases, you can design the set of data classes to match some available data format.

Please see:
http://msdn.microsoft.com/en-us/library/ms733127.aspx[^].

—SA

请参阅类似的讨论:
将JSON反序列化为C#动态对象 [

Please refer similar discussion:
Deserialize JSON into C# dynamic object[^]

创建一个类，该类将保存字符串中的数据.

Create a class which will hold the data from the string.

[DataContract]
public class MyClass
{
    [DataMember]
    public string key;

    [DataMember]
    public string value;
}

包括使用System.Runtime.Serialization;

机制:
如果原始字符串的格式为:{"key-client-post"，"value-from-server-side"}，请将字符串转换为以下格式:{"key":"key-client-post"，"value :服务器端值"}

然后使用DataContractJsonSerializer反序列化新字符串.

Include using System.Runtime.Serialization;

Mechanism:
If the original string is in format : {"key-client-post", "value-from-server-side"}, Convert the string to the format : {"key" : "key-client-post", "value" : "value-from-server-side"}

Then use the DataContractJsonSerializer to deserialize the new string.

static void Main(string[] args)
{
    String s_key = @"""key"":";
    String s_value = @"""value"":";
    
    String text = @"{""key1"", ""value1""}"; //The String to be deserialized
    String text_new = text.Insert(text.IndexOf('{')+1, s_key);
    text_new = text_new.Insert(text_new.IndexOf(',') + 1, s_value);
    Console.WriteLine(text_new);
    
    MemoryStream stream1 = new MemoryStream(ASCIIEncoding.Default.GetBytes(text_new));
    DataContractJsonSerializer deser = new DataContractJsonSerializer(typeof(MyClass)); 
    MyClass keyValue = (MyClass)deser.ReadObject(stream1);
    
    //Print deserialized values
    Console.WriteLine(keyValue.key);
    Console.WriteLine(keyValue.value);
}

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