Json的序列化和反序列化

时间：2011-06-16 来源：SirKevin

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 = "男" };
            string str = JsonHelper.JsonSerializer<Person>(p);
            Console.WriteLine(str);

5、结果：

{"Age":12,"Gender":"男","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