還是先封裝一個類吧! 這個類網上都可以找到的!有個這個類，一切都將變得簡單了，哈哈。
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Runtime.Serialization.Json;using System.ServiceModel.Web;///記得引用這個命名空間using System.IO;using System.Text;/// <summary>/// Summary description for JsonHelper/// </summary>public class JsonHelper{ public JsonHelper() { // // TODO: Add constructor logic here // } /// <summary> /// 把對象序列化 JSON 字串 /// </summary> /// <typeparam name="T">物件類型</typeparam> /// <param name="obj">對象實體</param> /// <returns>JSON字串</returns> public static string GetJson<T>(T obj) { //記住 添加引用 System.ServiceModel.Web /** * 如果不添加上面的引用,System.Runtime.Serialization.Json; Json是出不來的哦 * */ 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> /// 把JSON字串還原為對象 /// </summary> /// <typeparam name="T">物件類型</typeparam> /// <param name="szJson">JSON字串</param> /// <returns>對象實體</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); } }}
測試實體類：
public class TestData{ public TestData() { } public int Id { get; set; } public string Name { get; set; } public string Sex { get; set; }}
測試頁面：
<%@ Page Language="C#" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { string jsonStr = string.Empty; List<TestData> tds = new List<TestData>(); //測試資料 for (int i = 1; i < 4; i++) { tds.Add(new TestData() { Id = i, Name = "jinho" + i, Sex = "male" }); }//把一個list轉換為json字串 jsonStr = JsonHelper.GetJson<List<TestData>>(tds); Response.Write(jsonStr); this.Page.ClientScript.RegisterStartupScript(this.GetType(), "json", "getJson(" + jsonStr + ");", true); } </script><script type="text/javascript"> function getJson(jsonStr) {//使用eval函數 var json = eval(jsonStr);//因為上面為list集合 for (var i = 0; i < json.length; i++) { alert(json[i].Id + "Name:" + json[i].Name); } }</script><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title></title></head><body> <form id="form1" runat="server"> <div> </div> </form></body></html>
：關於json字串轉換為實體請各位自己測試吧！只要有上面那個JsonHelper 類，一切都好辦！
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