c#中jeson字符串和OBJECT对象的相互转换

时间：2022-04-07 04:54:16

对于本问题   我用三步来分别说明实现过程

1、定义一个类---- 实现转换的具体方法

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.IO;

using System.Runtime.Serialization.Json;

namespace Test.JesonTest

{

    public static class JsonHelper

    {

        //定义json操作运算

        //将字jeson字符串转换为object对象

        public static T strToObject<T>(string jsonString)

        {

            using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))

            {

                return (T)new DataContractJsonSerializer(typeof(T)).ReadObject(ms);

            }

        }

        //将object对象反序列为jeson字符串

        public static string objectToStr(object jsonObject)

        {

            using (var ms = new MemoryStream())

            {

                new DataContractJsonSerializer(jsonObject.GetType()).WriteObject(ms, jsonObject);

                return Encoding.UTF8.GetString(ms.ToArray());

            }

        }

    }

}

　　

　　说明：首先，当然是项目是3.5+的；必须添加引用：System.Runtime.Serialization 和 System.ServiceModel

2、创建一个OBJECT对象类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

namespace Test.JesonTest

{

    public class Person

    {

        public int id { get; set; }

        public string name { get; set; }

        public int age { get; set; }

       public Person() {

           id = ;

           name = "xuhyuan";

           age = ;

        }

    }

}

　　3、具体调用实现实例

　　    前台.aspx页面html。

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Testjeson.aspx.cs" Inherits="Test.JesonTest.Testjeson" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <label style="color: Purple">

            将Jeson字符串和Object之间的相互转换实现</label>

        <br />

        <br />

        <br />

        <br />

        <asp:Button ID="but_str_obj" runat="server" Text="将jeson字符串转换为Object"

            onclick="but_str_obj_Click" />

              

        <asp:Button ID="but_obj_str" runat="server" Text="将Object换为jeson字符串转"

            onclick="but_obj_str_Click" />

        <br /><br />

        <asp:textbox ID="txt_resoult" runat="server" Height="207px"

            TextMode="MultiLine" Width="624px"></asp:textbox>

    </div>

    </form>

</body>

</html>

　　c#页面后台代码

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.Script.Serialization;

namespace Test.JesonTest

{

    public partial class Testjeson : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

        }

        //将jeson字符串转换为object

        protected void but_str_obj_Click(object sender, EventArgs e)

        {

            string str_jeson = txt_resoult.Text.Trim();

            if (!string.IsNullOrEmpty(str_jeson))

            {

                List<Person> pes=new List<Person>();

                pes = JsonHelper.strToObject<List<Person>>(str_jeson);

               str_jeson="";

                for (int i = ; i < pes.Count; i++)

                {

                    str_jeson += "id=" + pes[i].id + ";name=" + pes[i].name + ";age=" + pes[i].age + "<br /><br /><br />";

                }

            }

            txt_resoult.Text+=str_jeson;

        }

        //将object转换为jeson字符串

        protected void but_obj_str_Click(object sender, EventArgs e)

        {

            Person pe = new Person();

            List<Person> pes = new List<Person>();

            pes.Add(pe);

            pes.Add(pe); pes.Add(pe);

            //反序列化实现

            string json = JsonHelper.objectToStr(pes);

            txt_resoult.Text = json;

            // 序列化----利用js实现

            //JavaScriptSerializer jss = new JavaScriptSerializer();

        }

    }

}

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