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Json的序列化和反序列化

作者:  时间: 2011-06-16

1、引用命名空间:

using System.Runtime.Serialization;

2、json的序列化和反序列化的方法:

public class JsonHelper
{
/// <summary>
/// 序列化
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="t"></param>
/// <returns></returns>
public static string JsonSerializer<T>(T t)
{
string jsonString = string.Empty;
DataContractJsonSerializer ser
= new DataContractJsonSerializer(typeof(T));
MemoryStream ms
= new MemoryStream();
ser.WriteObject(ms, t);
jsonString
= Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
return jsonString;
}
/// <summary>
/// 反序列化
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="jsonString"></param>
/// <returns></returns>
public static T JsonDeserialize<T>(string jsonString)
{
T obj
= default(T);
DataContractJsonSerializer ser
=new DataContractJsonSerializer(typeof(T));
MemoryStream ms
= new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
obj
= (T)ser.ReadObject(ms);
return obj;
}
}

3、现在先准备一个Person类:

class Person
{
[DataMemberAttribute]
public string Name { get; set; }
[DataMemberAttribute]
public int Age { get; set; }
[DataMemberAttribute]
public string Gender { get; set; }
}

4、现在就用JsonHelper方法把Person类的对象序列化成Json格式。

Person p = new Person { Name = "张三", Age = 12, Gender = "" };
string str = JsonHelper.JsonSerializer<Person>(p);
Console.WriteLine(str);

5、结果:

{"Age":12,"Gender":"","Name":"张三"}

6、再把Json格式反序列化为Person类型:

p = JsonHelper.JsonDeserialize<Person>(str);
Console.WriteLine(
"{0},{1},{2}",p.Name,p.Age,p.Gender);

7、结果:

张三,12,男