Json.NET读取和写入Json文件

using System;  

using System.Collections.Generic;  

using System.Linq;  

using System.Web;  

using System.Web.UI;  

using System.Web.UI.WebControls;  

using System.IO;  

using System.Text;  

using Newtonsoft.Json;  

using com.zjpx.model;  

using System.Collections;  

using Newtonsoft.Json.Converters;  

  

namespace web  

{  

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

    {  

        protected void Page_Load(object sender, EventArgs e)  

        {  

            ConfigFileModel cfm = new ConfigFileModel();  //实体模型类  

            cfm.CreateDate = "2012-02-23";  

            cfm.FileName = "test.txt";  

  

            //可以操作集合  

            Hashtable ht = new Hashtable();  

            ht.Add("hs_name", "alex");  

            ht.Add("hs_pwd", "ggg");  

  

            //序列化  

            string js1 = JsonConvert.SerializeObject(cfm);  

            string js2 = JsonConvert.SerializeObject(ht);  

            Response.Write(js1);  

            Response.Write("<br/>");  

            Response.Write(js2);  

            //"{\"FileName\":\"test.txt\",\"CreateDate\":\"2012-02-23\"}"  

            //"{\"hs_pwd\":\"ggg\",\"hs_name\":\"alex\"}"  

  

            //反序列化  

            ConfigFileModel debc1 = JsonConvert.DeserializeObject<ConfigFileModel>(js1);  

            ConfigFileModel debc2 = JsonConvert.DeserializeObject<ConfigFileModel>(js2);  

  

            //找到服务器物理路径  

            //string serverAppPath = Request.PhysicalApplicationPath.ToString();  

            string serverAppPath = @"d:\";  

            //构成配置文件路径  

            string con_file_path =@""+ serverAppPath + @"config.json";  

  

  

            if (!File.Exists(con_file_path))  

            {  

                File.Create(con_file_path);  

            }  

  

        //把模型数据写到文件  

            using (StreamWriter sw = new StreamWriter(con_file_path))  

            {  

                try  

                {  

  

                    JsonSerializer serializer = new JsonSerializer();  

                    serializer.Converters.Add(new JavaScriptDateTimeConverter());  

                    serializer.NullValueHandling = NullValueHandling.Ignore;  

  

                    //构建Json.net的写入流  

                    JsonWriter writer = new JsonTextWriter(sw);  

                    //把模型数据序列化并写入Json.net的JsonWriter流中  

                    serializer.Serialize(writer, cfm);  

                    //ser.Serialize(writer, ht);  

                    writer.Close();  

                    sw.Close();  

  

                }  

  

        }  

            catch (Exception ex)  

            {  

                ex.Message.ToString();  

            }  

  

             //读取json文件  

             using (StreamReader sr = new StreamReader(con_file_path))  

             {  

          try  

                  {  

                      JsonSerializer serializer = new JsonSerializer();  

                      serializer.Converters.Add(new JavaScriptDateTimeConverter());  

                      serializer.NullValueHandling = NullValueHandling.Ignore;  

  

                      //构建Json.net的读取流  

                      JsonReader reader = new JsonTextReader(sr);  

                      //对读取出的Json.net的reader流进行反序列化，并装载到模型中  

                      cfm = serializer.Deserialize<ConfigFileModel>(reader);  

  

                      Response.Write("<br/>");  

                      Response.Write(cfm.FileName+", "+cfm.CreateDate);  

          }  

                  catch (Exception ex)  

                  {  

                      ex.Message.ToString();  

                  }  

              }  

  

        }  

    }  

  

    public class ConfigFileModel  

    {  

        public ConfigFileModel() { }  

  

        string _fileName;  

  

        public string FileName  

        {  

            get { return _fileName; }  

            set { _fileName = value; }  

        }  

        string _createDate;  

  

        public string CreateDate  

        {  

            get { return _createDate; }  

            set { _createDate = value; }  

        }  

    }  

}