C#通用Json格式序列化和反序列化的方法

引入 System.Runtime.Serialization.Json命名空间使用 DataContractJsonSerializer类实现序列化
序列化类：People

public class People

{

public int Id { get; set; }

public string Name { get; set; }

}

执行序列化反序列化

protected void Page_Load(object sender, EventArgs e)

{

People people = new People();

people.Id = 1;

people.Name = "小白";

DataContractJsonSerializer json = new DataContractJsonSerializer(people.GetType());

string szJson = "";

//序列化

using (MemoryStream stream = new MemoryStream())

{

json.WriteObject(stream, people);

szJson = Encoding.UTF8.GetString(stream.ToArray());

}

//反序列化

using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szJson)))

{

DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(People));

People _people = (People)serializer.ReadObject(ms);

}

}

szJson输出结果：{"Id":1,"Name":"小白"}

可以使用IgnoreDataMember:指定该成员不是数据协定的一部分且没有进行序列化，DataMember:定义序列化属性参数，使用DataMember属性标记字段必须使用DataContract标记类
否则DataMember标记不起作用。

[DataContract]

public class People

{

[DataMember(Name = "id")]

public int Id { get; set; }

[IgnoreDataMember]

public string Name { get; set; }

}

输出结果: {"id":1}

进行简单封装一下

using System.Text;
using System.Runtime.Serialization.Json;
using System.IO;

namespace RRQ.Common
{
public static class JsonExtension
{
/// <summary>
/// 序列化Json
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="target"></param>
/// <returns></returns>
public static string JsonSerialize<T>(this object target)
{
T result = (T)target;

DataContractJsonSerializer json = new DataContractJsonSerializer(result.GetType());

using (MemoryStream stream = new MemoryStream())
{
json.WriteObject(stream, result);
return Encoding.UTF8.GetString(stream.ToArray());
}
}

/// <summary>
/// 返序列化Json
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="target"></param>
/// <returns></returns>
public static T JsonDeserialize<T>(this string target)
{
using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(target)))
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
return (T)serializer.ReadObject(ms);
}
}
}
}