首页 > 代码库 > [转]JSON序列化与反序列化

[转]JSON序列化与反序列化

2024-10-18 11:13:02   202人阅读

使用微软自带的Json库

方法一：引入System.Web.Script.Serialization命名空间使用 JavaScriptSerializer类实现简单的序列化

序列化类：Personnel

        public class Personnel
        {
            public int Id { get; set; }
            public string Name { get; set; }
        }

 

执行序列化反序列化：

技术分享        protected void Page_Load(object sender, EventArgs e)
        {
            Personnel personnel = new Personnel();
            personnel.Id = 1;
            personnel.Name = "小白";


            JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
            //执行序列化
            string r1 = jsonSerializer.Serialize(personnel);
            
            //执行反序列化
            Personnel _Personnel = jsonSerializer.Deserialize<Personnel>(r1);
         }
        protected void Page_Load(object sender, EventArgs e)
        {
            Personnel personnel = new Personnel();
            personnel.Id = 1;
            personnel.Name = "小白";


            JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
            //执行序列化
            string r1 = jsonSerializer.Serialize(personnel);
            
            //执行反序列化
            Personnel _Personnel = jsonSerializer.Deserialize<Personnel>(r1);
         }

 

r1输出结果：{"Id":1,"Name":"小白"}

可以使用 ScriptIgnore属性标记不序列化公共属性或公共字段。

        public class Personnel
        {
            [ScriptIgnore]
            public int Id { get; set; }
            public string Name { get; set; }
        }

 

r1输出结果：{"Name":"小白"}

方法二：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

技术分享
        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。

技术分享
        [DataContract]
        public class People
        {
            [DataMember(Name = "id")]
            public int Id { get; set; }
            [IgnoreDataMember]
            public string Name { get; set; }
        }

 

输出结果: {"id":1}

 

附 ：泛型json序列化类

namespace Communication{    using System;    using System.Collections.Generic;    using System.IO;    using System.Linq;    using System.Runtime.Serialization.Json;    using System.Text;    /// <summary>    /// Serialize and deserialize JSON object.    /// </summary>    internal class JsonHelper    {        /// <summary>        /// Initializes a new instance of the <see cref="JsonHelper" /> class.        /// </summary>        public JsonHelper()        {        }        /// <summary>        /// serialize object to JSON object.         /// </summary>        /// <typeparam name="T">the type of the serializing target.</typeparam>        /// <param name="obj">the instance of the serializing target.</param>        /// <returns>JSON string.</returns>        public static string GetJson<T>(T obj)        {            DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(T));            using (MemoryStream ms = new MemoryStream())            {                json.WriteObject(ms, obj);                string szjson = Encoding.UTF8.GetString(ms.ToArray());                return szjson;            }        }        /// <summary>        /// de-serialize object to JSON object.         /// </summary>        /// <typeparam name="T">the type of the de-serializing target.</typeparam>        /// <param name="szjson">the JSON string</param>        /// <returns>the instance of the de-serializing target.</returns>        public static T ParseFormJson<T>(string szjson)        {            T obj = Activator.CreateInstance<T>();            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szjson)))            {                DataContractJsonSerializer dcj = new DataContractJsonSerializer(typeof(T));                return (T)dcj.ReadObject(ms);            }        }    }}

　　

 

还可以使用Json.net进行Json序列化

 

这里下载:http://www.newtonsoft.com/products/json/

[转]JSON序列化与反序列化


联系
我们