JSon数据转换成实体类，将实体类转换成Json代码,C#代码库,德仔网

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【C#】 JSon数据转换成实体类，将实体类转换成Json
作者: / 发布于2018/1/24/ 243
using System;  
using System.Collections;  
using System.Configuration;  
using System.Data;  
using System.Linq;  
using System.Web;  
using System.Web.Security;  
using System.Web.UI;  
using System.Web.UI.HtmlControls;  
using System.Web.UI.WebControls;  
using System.Web.UI.WebControls.WebParts;  
using System.Xml.Linq;  
using System.IO;  
using System.Text;  
using System.Runtime.Serialization.Json;  
using System.Collections.Generic;  
using System.Reflection;  
using System.Web.Script.Serialization;  
  
namespace AjaxTest  
{  
    public partial class Json : System.Web.UI.Page  
    {  
        protected void Page_Load(object sender, EventArgs e)  
        {  
            //Response.Write(getJsonInfo());  
            //string strReg = "\\\\";  
            //strReg = strReg.Replace("\\\\", "\\");  
            ////Response.Write(strReg);  
            //方法一  
            Response.Write(disJsonInfo(getObjectByJson(getJsonInfo())));      //方法二  
            Response.Write(JsonInfo.getInfo());  
  
        }  
  
        /// <summary>  
        /// 获取将实体类转换为json数据（目的是为了更快在网页上传递数据）  
        /// </summary>  
        /// <returns></returns>  
        public string getJsonInfo()  
        {  
            UserInfo userInfo = new UserInfo();  
            //userInfo.strNameInfo = "张三";  
            //userInfo.intAgeInfo = 23;  
            //userInfo.intTelInfo = 66666;  
            //userInfo.strAddrInfo = "北京市";  
            //userInfo.strPasswordInfo = "yhx.123";  
            userInfo.strName = "张三";  
            userInfo.intAge = 23;  
            userInfo.strPsd = "yhx.123";  
            userInfo.intTel = 2324;  
            userInfo.strAddr = "北京市";  
            //将对象序列化json  
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(UserInfo));  
            //创建存储区为内存流  
            System.IO.MemoryStream ms = new MemoryStream();  
            //将json字符串写入内存流中  
            serializer.WriteObject(ms, userInfo);  
            System.IO.StreamReader reader = new StreamReader(ms);  
            ms.Position = 0;  
            string strRes = reader.ReadToEnd();  
            reader.Close();  
            ms.Close();  
            return strRes;  
        }  
  
        /// <summary>  
        /// 将json数据转换成实体类     
        /// </summary>  
        /// <returns></returns>  
        private static List<UserInfo> getObjectByJson(string jsonString)  
        {  
            // 实例化DataContractJsonSerializer对象，需要待序列化的对象类型  
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<UserInfo>));  
            //把Json传入内存流中保存  
            jsonString = "[" + jsonString + "]";  
            MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));  
            // 使用ReadObject方法反序列化成对象  
            object ob = serializer.ReadObject(stream);  
            List<UserInfo> ls = (List<UserInfo>)ob;  
            return ls;  
        }  
  
        /// <summary>  
        /// 在页面上显示转换为实体类数据  
        /// </summary>  
        private string  disJsonInfo(List<UserInfo> us)  
        {  
            string strItem = "";  
            foreach(var item in us )  
            {  
                strItem += item.strName + ":" + item.strPsd + ":" + item.intAge + ":" + item.intTel + ":" + item.strAddr + "<br/>";  
            }  
            return strItem;  
        }  
    }  
  
  
  
  
    /// <summary>  
    /// 用户实体类  
    /// </summary>  
    public class UserInfo  
    {  
        //用户名  
        public string strName { get; set; }  
        //年龄  
        public int intAge { get; set; }  
        //密码  
        public string strPsd { get; set; }  
        //电话号码   
        public int intTel { get; set; }  
        //地址  
        public string strAddr { get; set; }  
        ////构造函数进行初始化  
        //public UserInfo()  
        //{  
        //    strName = "";  
        //    intAge = 0;  
        //    strPsd = "";  
        //    intTel = 0;  
        //    strAddr = "";  
        //}  
  
        ///// <summary>  
        ///// 用户名  
        ///// </summary>  
        //public string strNameInfo  
        //{  
        //    set { strName = value; }  
        //    get { return strName; }  
        //}  
  
        ///// <summary>  
        ///// 年龄  
        ///// </summary>  
        //public int intAgeInfo  
        //{  
        //    set { intAge = value; }  
        //    get { return intAge; }  
        //}  
  
        ///// <summary>  
        ///// 密码  
        ///// </summary>  
        //public string strPasswordInfo  
        //{  
        //    set { strPsd = value; }  
        //    get { return strPsd; }  
        //}  
  
        ///// <summary>  
        ///// 电话号码  
        ///// </summary>  
        //public int intTelInfo  
        //{  
        //    set { intTel = value; }  
        //    get { return intTel; }  
        //}  
  
        ///// <summary>  
        ///// 地址  
        ///// </summary>  
        //public string strAddrInfo  
        //{  
        //    set { strAddr = value; }  
        //    get { return strAddr; }  
        //}  
    }  
  
  
    /// <summary>  
    /// 将json数据转换成实体类（方法二）  
    /// </summary>  
    public static class JsonInfo  
    {  
        /// <summary>  
        /// 获取将实体类转换为json数据（目的是为了更快在网页上传递数据）  
        /// </summary>  
        /// <returns></returns>  
        public static string getJsonInfo()  
        {  
            UserInfo userInfo = new UserInfo();  
            userInfo.strName = "张三";  
            userInfo.intAge = 23;  
            userInfo.strPsd = "yhx.123";  
            userInfo.intTel = 2324;  
            userInfo.strAddr = "北京市";  
            //将对象序列化json  
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(UserInfo));  
            //创建存储区为内存流  
            System.IO.MemoryStream ms = new MemoryStream();  
            //将json字符串写入内存流中  
            serializer.WriteObject(ms, userInfo);  
            System.IO.StreamReader reader = new StreamReader(ms);  
            ms.Position = 0;  
            string strRes = reader.ReadToEnd();  
            reader.Close();  
            ms.Close();  
            return strRes;  
        }  
  
        /// <summary>  
        ///   
        /// </summary>  
        /// <returns></returns>  
        public static string getInfo()  
        {  
            string JsonStr = "["+getJsonInfo()+"]";  
            List<UserInfo> products;  
  
            products = JsonInfo.JSONStringToList<UserInfo>(JsonStr);  
  
            string strItem = "";  
            foreach (var item in products)  
            {  
                strItem += item.strName + ":" + item.strPsd + ":" + item.intAge + ":" + item.intTel + ":" + item.strAddr + "<br/>";  
            }  
            return strItem;  
        }  
  
  
        /// <summary>  
        /// 返回List集合对象  
        /// </summary>  
        /// <typeparam name="T"></typeparam>  
        /// <param name="JsonStr"></param>  
        /// <returns></returns>  
        public static List<T> JSONStringToList<T>(this string JsonStr)  
        {  
  
            JavaScriptSerializer Serializer = new JavaScriptSerializer();  
  
            List<T> objs = Serializer.Deserialize<List<T>>(JsonStr);  
            return objs;  
  
        }  
  
  
        /// <summary>  
        ///   
        /// </summary>  
        /// <typeparam name="T"></typeparam>  
        /// <param name="json"></param>  
        /// <returns></returns>  
        public static T Deserialize<T>(string json)  
        {  
  
            T obj = Activator.CreateInstance<T>();  
  
            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))  
            {  
  
                DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());  
  
                return (T)serializer.ReadObject(ms);  
  
            }  
  
        }  
    }  
}
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