using System;
using System.Collections.Generic;
using System.Data;
using System.Web.Script.Serialization;
using System.Xml;namespace PowerEasy.Software.OrderSyncLibrary.Commom.Helper
{/// <summary>///     JSON数据格式转换/// </summary>public class JsonHelper{/// <summary>///     将JSON解析成DataSet（只限标准的JSON数据）///     例如：Json＝{t1:[{name:'数据name',type:'数据type'}]} 或 Json＝{t1:[{name:'数据name',type:'数据type'}],t2:[{id:'数据id',gx:'数据gx',val:'数据val'}]}/// </summary>/// <param name="json">Json字符串</param>/// <returns>DataSet</returns>public static DataSet JsonToDataSet(string json){try{var ds = new DataSet();var jss = new JavaScriptSerializer();object obj = jss.DeserializeObject(json);var datajson = (Dictionary<string, object>) obj;foreach (var item in datajson){var dt = new DataTable(item.Key);var rows = (object[]) item.Value;foreach (object row in rows){var val = (Dictionary<string, object>) row;DataRow dr = dt.NewRow();foreach (var sss in val){if (!dt.Columns.Contains(sss.Key)){dt.Columns.Add(sss.Key);dr[sss.Key] = sss.Value;}elsedr[sss.Key] = sss.Value;}dt.Rows.Add(dr);}ds.Tables.Add(dt);}return ds;}catch{return null;}}/// <summary>///     将DataSet转化成JSON数据/// </summary>/// <param name="ds"></param>/// <returns></returns>public static string DataSetToJson(DataSet ds){string json;try{if (ds.Tables.Count == 0)throw new Exception("DataSet中Tables为0");json = "{";for (int i = 0; i < ds.Tables.Count; i++){json += "T" + (i + 1) + ":[";for (int j = 0; j < ds.Tables[i].Rows.Count; j++){json += "{";for (int k = 0; k < ds.Tables[i].Columns.Count; k++){json += ds.Tables[i].Columns[k].ColumnName + ":'" + ds.Tables[i].Rows[j][k] + "'";if (k != ds.Tables[i].Columns.Count - 1)json += ",";}json += "}";if (j != ds.Tables[i].Rows.Count - 1)json += ",";}json += "]";if (i != ds.Tables.Count - 1)json += ",";}json += "}";}catch (Exception ex){throw new Exception(ex.Message);}return json;}/// <summary>///     json字符串转换为Xml对象/// </summary>/// <param name="sJson"></param>/// <returns></returns>public static XmlDocument JsonToXml(string sJson){var serializer = new JavaScriptSerializer();var dic = (Dictionary<string, object>) serializer.DeserializeObject(sJson);var doc = new XmlDocument();XmlDeclaration xmlDec = doc.CreateXmlDeclaration("1.0", "gb2312", "yes");doc.InsertBefore(xmlDec, doc.DocumentElement);XmlElement root = doc.CreateElement("root");doc.AppendChild(root);foreach (var item in dic){XmlElement element = doc.CreateElement(item.Key);KeyValue2Xml(element, item);root.AppendChild(element);}return doc;}private static void KeyValue2Xml(XmlElement node, KeyValuePair<string, object> source){object kValue = source.Value;if (kValue.GetType() == typeof (Dictionary<string, object>)){var dictionary = kValue as Dictionary<string, object>;if (dictionary != null)foreach (var item in dictionary){if (node.OwnerDocument != null){XmlElement element = node.OwnerDocument.CreateElement(item.Key);KeyValue2Xml(element, item);node.AppendChild(element);}}}else if (kValue.GetType() == typeof (object[])){var o = kValue as object[];if (o != null)foreach (object t in o){if (node.OwnerDocument != null){XmlElement xitem = node.OwnerDocument.CreateElement("Item");var item = new KeyValuePair<string, object>("Item", t);KeyValue2Xml(xitem, item);node.AppendChild(xitem);}}}else{if (node.OwnerDocument != null){XmlText text = node.OwnerDocument.CreateTextNode(kValue.ToString());node.AppendChild(text);}}}}
}