【转】C#中将JSon数据转换成实体类,将实体类转换成Json
http://wo13145219.iteye.com/blog/2022667
http://json2csharp.chahuo.com/
- 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);
- }
- }
- }
- }