JsonTools

 ???public class JsonTools ???{ ????????/// <summary> ???????/// Generate Json string from the object ???????/// </summary> ???????/// <param name="obj">Object</param> ???????/// <returns>Json String</returns> ???????public static string ObjectToJson(object obj) ???????{ ???????????//System.Runtime.Serialization.Json.DataContractJsonSerializer; ???????????DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType()); ???????????MemoryStream stream = new MemoryStream(); ???????????serializer.WriteObject(stream, obj); ???????????byte[] dataBytes = new byte[stream.Length]; ???????????stream.Position = 0; ???????????stream.Read(dataBytes, 0, (int)stream.Length); ???????????String dataString = Encoding.UTF8.GetString(dataBytes); ???????????return dataString; ???????} ???????/// <summary> ???????/// Generate a object from Json string ???????/// </summary> ???????/// <param name="jsonString">Json string</param> ???????/// <param name="obj">Object</param> ???????/// <returns>Object</returns> ???????public static object JsonToObject(string jsonString, object obj) ???????{ ???????????DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType()); ???????????MemoryStream mStream = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)); ???????????obj = serializer.ReadObject(mStream); ???????????return obj; ???????} ???????/// <summary> ???????/// Generate a object from Json string ???????/// </summary> ???????/// <param name="jsonString">Json string</param> ???????/// <param name="obj">Object</param> ???????/// <returns>Object</returns> ???????public static T JsonToObject<T>(string jsonString) ???????{ ???????????DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T)); ???????????using (MemoryStream mStream = new MemoryStream(Encoding.UTF8.GetBytes(jsonString))) ???????????{ ???????????????return (T)serializer.ReadObject(mStream); ???????????} ???????} ???????/// <summary> ???????/// 序列化数据为Json数据格式. ???????/// </summary> ???????/// <param name="value">被序列化的对象</param> ???????/// <returns></returns> ???????public static string ObjectToJson2(object value) ???????{ ???????????return ObjectToJson2(value, false); ???????} ???????/// <summary> ???????/// 序列化数据为Json数据格式. ???????/// </summary> ???????/// <param name="value">被序列化的对象</param> ???????/// <param name="clearLastZero">是否清除小数位后的0</param> ???????/// <returns></returns> ???????public static string ObjectToJson2(object value, bool clearLastZero) ???????{ ???????????Type type = value.GetType(); ???????????Newtonsoft.Json.JsonSerializer json = new Newtonsoft.Json.JsonSerializer(); ???????????//json.NullValueHandling = NullValueHandling.Ignore; ???????????json.ObjectCreationHandling = Newtonsoft.Json.ObjectCreationHandling.Replace; ??????????????????????json.MissingMemberHandling = Newtonsoft.Json.MissingMemberHandling.Ignore; ???????????json.ReferenceLoopHandling = ReferenceLoopHandling.Ignore; ???????????????????????????????????json.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter()); ???????????IsoDateTimeConverter timeFormate = new IsoDateTimeConverter(); ???????????timeFormate.DateTimeFormat = "yyyy-MM-dd"; ???????????json.Converters.Add(timeFormate); ???????????????????json.Formatting = Formatting.Indented; ???????????json.NullValueHandling = NullValueHandling.Ignore; ??????????????????????if (clearLastZero) ???????????????json.Converters.Add(new MinifiedNumArrayConverter()); ???????????StringWriter sw = new StringWriter(); ???????????Newtonsoft.Json.JsonTextWriter writer = new JsonTextWriter(sw); ???????????writer.Formatting = Formatting.None; ???????????writer.QuoteChar = ‘"‘; ???????????writer.QuoteName = false; ???????????json.Serialize(writer, value); ???????????string output = sw.ToString(); ???????????writer.Close(); ???????????sw.Close(); ???????????return output; ???????} ???????/// <summary> ???????/// 将Json数据转为对象 ???????/// </summary> ???????/// <typeparam name="T">目标对象</typeparam> ???????/// <param name="jsonText">json数据字符串</param> ???????/// <returns></returns> ???????public static T JsonToObject2<T>(string jsonText) ???????{ ???????????Newtonsoft.Json.JsonSerializer json = new Newtonsoft.Json.JsonSerializer(); ???????????json.NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore; ???????????json.ObjectCreationHandling = Newtonsoft.Json.ObjectCreationHandling.Replace; ???????????json.MissingMemberHandling = Newtonsoft.Json.MissingMemberHandling.Ignore; ???????????json.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore; ???????????StringReader sr = new StringReader(jsonText); ???????????Newtonsoft.Json.JsonTextReader reader = new JsonTextReader(sr); ???????????T result = default(T); ???????????try ???????????{ ???????????????result = (T)json.Deserialize(reader, typeof(T)); ???????????} ???????????catch ???????????{ ???????????} ???????????finally ???????????{ ???????????????reader.Close(); ???????????} ???????????return result; ???????} ???????/// <summary> ???????/// 普通集合转换Json ???????/// </summary> ???????/// <param name="array">集合对象</param> ???????/// <returns>Json字符串</returns> ???????public static string ListToJson(IEnumerable array) ???????{ ???????????string jsonString = "["; ???????????foreach (object item in array) ???????????{ ???????????????jsonString += ObjectToJson(item) + ","; ???????????} ???????????int t = jsonString.LastIndexOf(‘,‘); ???????????string strTmp = jsonString.Substring(0, t); ???????????return strTmp + "]"; ???????} ???????/// <summary> ??????????/// DataTable to json ??????????/// </summary> ??????????/// <param name="jsonName">返回json的名称</param> ??????????/// <param name="dt">转换成json的表</param> ??????????/// <returns></returns> ??????????public string DataTableToJson(string jsonName, System.Data.DataTable dt, string strTotal = "") ???????{ ???????????StringBuilder Json = new StringBuilder(); ???????????Json.Append("[{\"TotalCount\":\"" + strTotal + "\",\"Head\":["); ???????????for (int i = 0; i < dt.Columns.Count; i++) ???????????{ ???????????????Json.Append("{\"ColumnHead\":\"" + dt + dt.Columns[i].ColumnName + "\"}"); ???????????????if (i < dt.Columns.Count - 1) ???????????????{ ???????????????????Json.Append(","); ???????????????} ???????????} ???????????Json.Append("],"); ???????????Json.Append("\"" + jsonName + "\":["); ???????????if (dt.Rows.Count > 0) ???????????{ ???????????????for (int i = 0; i < dt.Rows.Count; i++) ???????????????{ ???????????????????Json.Append("{"); ???????????????????for (int j = 0; j < dt.Columns.Count; j++) ???????????????????{ ???????????????????????Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":\"" + dt.Rows[i][j].ToString() + "\""); ???????????????????????if (j < dt.Columns.Count - 1) ???????????????????????{ ???????????????????????????Json.Append(","); ???????????????????????} ???????????????????} ???????????????????Json.Append("}"); ???????????????????if (i < dt.Rows.Count - 1) ???????????????????{ ???????????????????????Json.Append(","); ???????????????????} ???????????????} ???????????} ???????????Json.Append("]}]"); ???????????return Json.ToString(); ???????} ???????public class MinifiedNumArrayConverter : JsonConverter ???????{ ???????????private void dumpNumArray<T>(JsonWriter writer, T[] array) ???????????{ ???????????????foreach (T n in array) ???????????????{ ???????????????????var s = n.ToString(); ???????????????????//此處可考慮改用string.format("{0:#0.####}")[小數後方#數目依最大小數位數決定] ???????????????????//感謝網友vencin提供建議 ???????????????????if (s.EndsWith(".0")) ???????????????????????writer.WriteRawValue(s.Substring(0, s.Length - 2)); ???????????????????else if (s.Contains(".")) ???????????????????????writer.WriteRawValue(s.TrimEnd(‘0‘)); ???????????????????else ???????????????????????writer.WriteRawValue(s); ???????????????} ???????????} ???????????private void dumpNum<T>(JsonWriter writer, T value) ???????????{ ???????????????var s = value.ToString(); ???????????????//此處可考慮改用string.format("{0:#0.####}")[小數後方#數目依最大小數位數決定] ???????????????//感謝網友vencin提供建議 ???????????????if (s.EndsWith(".0")) ???????????????????writer.WriteRawValue(s.Substring(0, s.Length - 2)); ???????????????else if (s.Contains(".")) ???????????????????writer.WriteRawValue(s.TrimEnd(‘0‘)); ???????????????else ???????????????????writer.WriteRawValue(s); ???????????} ???????????public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) ???????????{ ???????????????Type t = value.GetType(); ???????????????if (t == dblArrayType) ???????????????{ ???????????????????writer.WriteStartArray(); ???????????????????dumpNumArray<double>(writer, (double[])value); ???????????????????writer.WriteEndArray(); ???????????????} ???????????????else if (t == decArrayType) ???????????????{ ???????????????????writer.WriteStartArray(); ???????????????????dumpNumArray<decimal>(writer, (decimal[])value); ???????????????????writer.WriteEndArray(); ???????????????} ???????????????else if (t == decType || t == decNullType) ???????????????{ ???????????????????dumpNum<decimal>(writer, (decimal)value); ???????????????} ???????????????else ???????????????????throw new NotImplementedException(); ???????????} ???????????private Type dblArrayType = typeof(double[]); ???????????private Type decArrayType = typeof(decimal[]); ???????????private Type decType = typeof(decimal); ???????????private Type decNullType = typeof(decimal?); ???????????public override bool CanConvert(Type objectType) ???????????{ ???????????????if (objectType == dblArrayType || objectType == decArrayType || objectType == decType || objectType == decNullType) ???????????????????return true; ???????????????return false; ???????????} ???????????public override bool CanRead ???????????{ ???????????????get { return false; } ???????????} ???????????public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) ???????????{ ???????????????throw new NotImplementedException(); ???????????} ???????} ???}