/**************************************************
* 版權(quán)所有: Mr_Sheng
* 文 件 名: JSONHelper.cs
* 文件描述:
* 類型說明: JSONHelper JSON幫助類
* 授權(quán)聲明:
* 本程序?yàn)樽杂绍浖?
* 您可依據(jù)自由軟件基金會(huì)所發(fā)表的GPL v3授權(quán)條款，對(duì)本程序再次發(fā)布和/或修改；
* 本程序是基于使用目的而加以發(fā)布，然而不負(fù)任何擔(dān)保責(zé)任；
* 亦無對(duì)適售性或特定目的適用性所為的默示性擔(dān)保。
* 詳情請(qǐng)參照GNU通用公共授權(quán) v3（參見license.txt文件）。
* 版本歷史:
* v2.0.0 Mr_Sheng 2009-09-09 修改
***************************************************/
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Script.Serialization;
using System.Data;
namespace Sheng.Common
{
/// <summary>
/// JSON幫助類
/// </summary>
public class JSONHelper
{
/// <summary>
/// 對(duì)象轉(zhuǎn)JSON
/// </summary>
/// <param name="obj">對(duì)象</param>
/// <returns>JSON格式的字符串</returns>
public static string ObjectToJSON(object obj)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
try
{
return jss.Serialize(obj);
}
catch (Exception ex)
{
throw new Exception("JSONHelper.ObjectToJSON(): " + ex.Message);
}
}
/// <summary>
/// 數(shù)據(jù)表轉(zhuǎn)鍵值對(duì)集合
/// 把DataTable轉(zhuǎn)成 List集合, 存每一行
/// 集合中放的是鍵值對(duì)字典,存每一列
/// </summary>
/// <param name="dt">數(shù)據(jù)表</param>
/// <returns>哈希表數(shù)組</returns>
public static List<Dictionary<string, object>> DataTableToList(DataTable dt)
{
List<Dictionary<string, object>> list
= new List<Dictionary<string, object>>();
foreach (DataRow dr in dt.Rows)
{
Dictionary<string, object> dic = new Dictionary<string, object>();
foreach (DataColumn dc in dt.Columns)
{
dic.Add(dc.ColumnName, dr[dc.ColumnName]);
}
list.Add(dic);
}
return list;
}
/// <summary>
/// 數(shù)據(jù)集轉(zhuǎn)鍵值對(duì)數(shù)組字典
/// </summary>
/// <param name="dataSet">數(shù)據(jù)集</param>
/// <returns>鍵值對(duì)數(shù)組字典</returns>
public static Dictionary<string, List<Dictionary<string, object>>> DataSetToDic(DataSet ds)
{
Dictionary<string, List<Dictionary<string, object>>> result = new Dictionary<string, List<Dictionary<string, object>>>();
foreach (DataTable dt in ds.Tables)
result.Add(dt.TableName, DataTableToList(dt));
return result;
}
/// <summary>
/// 數(shù)據(jù)表轉(zhuǎn)JSON
/// </summary>
/// <param name="dataTable">數(shù)據(jù)表</param>
/// <returns>JSON字符串</returns>
public static string DataTableToJSON(DataTable dt)
{
return ObjectToJSON(DataTableToList(dt));
}
/// <summary>
/// JSON文本轉(zhuǎn)對(duì)象,泛型方法
/// </summary>
/// <typeparam name="T">類型</typeparam>
/// <param name="jsonText">JSON文本</param>
/// <returns>指定類型的對(duì)象</returns>
public static T JSONToObject<T>(string jsonText)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
try
{
return jss.Deserialize<T>(jsonText);
}
catch (Exception ex)
{
throw new Exception("JSONHelper.JSONToObject(): " + ex.Message);
}
}
/// <summary>
/// 將JSON文本轉(zhuǎn)換為數(shù)據(jù)表數(shù)據(jù)
/// </summary>
/// <param name="jsonText">JSON文本</param>
/// <returns>數(shù)據(jù)表字典</returns>
public static Dictionary<string, List<Dictionary<string, object>>> TablesDataFromJSON(string jsonText)
{
return JSONToObject<Dictionary<string, List<Dictionary<string, object>>>>(jsonText);
}
/// <summary>
/// 將JSON文本轉(zhuǎn)換成數(shù)據(jù)行
/// </summary>
/// <param name="jsonText">JSON文本</param>
/// <returns>數(shù)據(jù)行的字典</returns>
public static Dictionary<string, object> DataRowFromJSON(string jsonText)
{
return JSONToObject<Dictionary<string, object>>(jsonText);
}
}
}