public class JsonHelper { /// <summary> /// 将对象序列化为JSON格式 /// </summary> /// <param name="o">对象</param> /// <returns>json字符串</returns> public static string SerializeObject(object o) { string json = JsonConvert.SerializeObject(o); return json; } /// <summary> /// 解析JSON字符串生成对象实体 /// </summary> /// <typeparam name="T">对象类型</typeparam> /// <param name="json">json字符串(eg.{"ID":"112","Name":"石子儿"})</param> /// <returns>对象实体</returns> public static T DeserializeJsonToObject<T>(string json) where T : class { JsonSerializer serializer = new JsonSerializer(); StringReader sr = new StringReader(json); object o = serializer.Deserialize(new JsonTextReader(sr), typeof(T)); T t = o as T; return t; } /// <summary> /// 解析JSON数组生成对象实体集合 /// </summary> /// <typeparam name="T">对象类型</typeparam> /// <param name="json">json数组字符串(eg.[{"ID":"112","Name":"石子儿"}])</param> /// <returns>对象实体集合</returns> public static List<T> DeserializeJsonToList<T>(string json) where T : class { JsonSerializer serializer = new JsonSerializer(); StringReader sr = new StringReader(json); object o = serializer.Deserialize(new JsonTextReader(sr), typeof(List<T>)); List<T> list = o as List<T>; return list; } /// <summary> /// 反序列化JSON到给定的匿名对象. /// </summary> /// <typeparam name="T">匿名对象类型</typeparam> /// <param name="json">json字符串</param> /// <param name="anonymousTypeObject">匿名对象</param> /// <returns>匿名对象</returns> public static T DeserializeAnonymousType<T>(string json, T anonymousTypeObject) { T t = JsonConvert.DeserializeAnonymousType(json, anonymousTypeObject); return t; } /// <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 S_JsonToDataSet(string json) { try { var ds = new DataSet(); var jss = new JsonSerializer(); StringReader sr = new StringReader(json); object obj = jss.Deserialize(sr, typeof(Dictionary<string, object>)); 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; } else dr[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 S_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 S_JsonToXml(string sJson) { var jss = new JsonSerializer(); StringReader sr = new StringReader(sJson); object obj = jss.Deserialize(sr, typeof(Dictionary<string, object>)); var dic = (Dictionary<string, object>)obj; 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); S_KeyValue2Xml(element, item); root.AppendChild(element); } return doc; } public static void WriteXML(string sJson,string filename) { var jss = new JsonSerializer(); StringReader sr = new StringReader(sJson); object obj = jss.Deserialize(sr, typeof(Dictionary<string, object>)); var dic = (Dictionary<string, object>)obj; 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); S_KeyValue2Xml(element, item); root.AppendChild(element); } doc.Save("XML/" + filename); } private static void S_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); S_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); S_KeyValue2Xml(xitem, item); node.AppendChild(xitem); } } } else { if (node.OwnerDocument != null) { XmlText text = node.OwnerDocument.CreateTextNode(kValue.ToString()); node.AppendChild(text); } } } }
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