jsonHelper
来源：互联网 发布：淘宝运营月工作计划表 编辑：程序博客网 时间：2024/06/01 18:15
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI.WebControls;using System.Text;using System.Data;using System.Collections;using System.Reflection;using System.Text.RegularExpressions;using System.Web.UI.HtmlControls;using System.Web.Script.Serialization;using CMDS.ORMappers;using System.IO;namespace CMDS.Common{ /// <summary> /// Json处理类 Devil20120412 /// </summary> public static class JsonHelper { public static JavaScriptSerializer Serializer = new JavaScriptSerializer(); /// <summary> /// List转化为Json /// </summary> /// <param name="obj"></param> /// <returns></returns> public static string ListToJson(object obj) { return Serializer.Serialize(obj); } /// <summary> /// Json转换为List /// </summary> /// <param name="list"></param> /// <param name="jsons"></param> /// <returns></returns> public static List<T> JsonToList<T>(string jsons) { return Serializer.Deserialize<List<T>>(jsons); } /// <summary> /// Json转换为Mode实体 /// </summary> /// <param name="jsons"></param> /// <returns></returns> public static T JsonToModel<T>(string jsons) { return Serializer.Deserialize<T>(jsons); } ///// <summary> ///// List转成json ///// </summary> ///// <typeparam name="T"></typeparam> ///// <param name="jsonName"></param> ///// <param name="list"></param> ///// <returns></returns> //public static string ListToJson<T>(IList<T> list, string jsonName) //{ // StringBuilder Json = new StringBuilder(); // if (string.IsNullOrEmpty(jsonName)) // jsonName = list[0].GetType().Name; // Json.Append("{\"" + jsonName + "\":["); // if (list.Count > 0) // { // for (int i = 0; i < list.Count; i++) // { // T obj = Activator.CreateInstance<T>(); // PropertyInfo[] pi = obj.GetType().GetProperties(); // Json.Append("{"); // for (int j = 0; j < pi.Length; j++) // { // Type type; // object o = pi[j].GetValue(list[i], null); // string v = string.Empty; // if (o != null) // { // type = o.GetType(); // v = o.ToString(); // } // else // { // type = typeof(string); // } // Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(v, type)); // if (j < pi.Length - 1) // { // Json.Append(","); // } // } // Json.Append("}"); // if (i < list.Count - 1) // { // Json.Append(","); // } // } // } // Json.Append("]}"); // return Json.ToString(); //} /// <summary> /// 将Json序列化的时间由/Date(1294499956278+0800)转为字符串 /// </summary> private static string ConvertJsonDateToDateString(Match m) { string result = string.Empty; DateTime dt = new DateTime(1970, 1, 1); dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value)); dt = dt.ToLocalTime(); result = dt.ToString("yyyy-MM-dd HH:mm:ss"); return result; } /// <summary> /// 将时间字符串转为Json时间 /// </summary> private static string ConvertDateStringToJsonDate(Match m) { string result = string.Empty; DateTime dt = DateTime.Parse(m.Groups[0].Value); dt = dt.ToUniversalTime(); TimeSpan ts = dt - DateTime.Parse("1970-01-01"); result = string.Format("\\/Date({0}+0800)\\/", ts.TotalMilliseconds); return result; } ///// <summary> ///// List转成json ///// </summary> ///// <typeparam name="T"></typeparam> ///// <param name="list"></param> ///// <returns></returns> //public static string ListToJson<T>(IList<T> list) //{ // object obj = list[0]; // return ListToJson<T>(list, obj.GetType().Name); //} /// <summary> /// 对象转换为Json字符串 /// </summary> /// <param name="jsonObject">对象</param> /// <returns>Json字符串</returns> public static string ToJson(object jsonObject) { try { StringBuilder jsonString = new StringBuilder(); jsonString.Append("{"); PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties(); for (int i = 0; i < propertyInfo.Length; i++) { object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null); if (objectValue == null) { continue; } StringBuilder value = new StringBuilder(); if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan) { value.Append("\"" + objectValue.ToString() + "\""); } else if (objectValue is string) { value.Append("\"" + objectValue.ToString() + "\""); } else if (objectValue is IEnumerable) { value.Append(ToJson((IEnumerable)objectValue)); } else { value.Append("\"" + objectValue.ToString() + "\""); } jsonString.Append("\"" + propertyInfo[i].Name + "\":" + value + ","); ; } return jsonString.ToString().TrimEnd(',') + "}"; } catch (Exception ex) { throw ex; } } /// <summary> /// 对象集合转换Json /// </summary> /// <param name="array">集合对象</param> /// <returns>Json字符串</returns> public static string ToJson(IEnumerable array) { string jsonString = "["; foreach (object item in array) { jsonString += ToJson(item) + ","; } if (jsonString.Length > 1) { // jsonString.Remove(jsonString.Length - 1, 1); jsonString = jsonString.TrimEnd(','); } else { jsonString = "[]"; } return jsonString + "]"; } /// <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 ToArrayString(IEnumerable array) { string jsonString = "["; foreach (object item in array) { jsonString = ToJson(item.ToString()) + ","; } jsonString.Remove(jsonString.Length - 1, jsonString.Length); return jsonString + "]"; } /// <summary> /// Datatable转换为Json /// </summary> /// <param name="table">Datatable对象</param> /// <returns>Json字符串</returns> public static string ToJson(DataTable dt) { StringBuilder jsonString = new StringBuilder(); jsonString.Append("["); DataRowCollection drc = dt.Rows; for (int i = 0; i < drc.Count; i++) { jsonString.Append("{"); for (int j = 0; j < dt.Columns.Count; j++) { string strKey = dt.Columns[j].ColumnName; string strValue = drc[i][j].ToString(); Type type = dt.Columns[j].DataType; jsonString.Append("\"" + strKey + "\":"); strValue = StringFormat(strValue, type); if (j < dt.Columns.Count - 1) { jsonString.Append(strValue + ","); } else { jsonString.Append(strValue); } } jsonString.Append("},"); } jsonString.Remove(jsonString.Length - 1, 1); jsonString.Append("]"); if (jsonString.Length == 1) { return "[]"; } return jsonString.ToString(); } /// <summary> /// DataTable转成Json /// </summary> /// <param name="jsonName"></param> /// <param name="dt"></param> /// <returns></returns> public static string ToJson(DataTable dt, string jsonName) { StringBuilder Json = new StringBuilder(); if (string.IsNullOrEmpty(jsonName)) jsonName = dt.TableName; 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++) { Type type = dt.Rows[i][j].GetType(); Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j] is DBNull ? string.Empty : dt.Rows[i][j].ToString(), type)); if (j < dt.Columns.Count - 1) { Json.Append(","); } } Json.Append("}"); if (i < dt.Rows.Count - 1) { Json.Append(","); } } } Json.Append("]}"); return Json.ToString(); } /// <summary> /// DataReader转换为Json /// </summary> /// <param name="dataReader">DataReader对象</param> /// <returns>Json字符串</returns> public static string ToJson(IDataReader dataReader) { try { StringBuilder jsonString = new StringBuilder(); jsonString.Append("["); while (dataReader.Read()) { jsonString.Append("{"); for (int i = 0; i < dataReader.FieldCount; i++) { Type type = dataReader.GetFieldType(i); string strKey = dataReader.GetName(i); string strValue = dataReader[i].ToString(); jsonString.Append("\"" + strKey + "\":"); strValue = StringFormat(strValue, type); if (i < dataReader.FieldCount - 1) { jsonString.Append(strValue + ","); } else { jsonString.Append(strValue); } } jsonString.Append("},"); } if (!dataReader.IsClosed) { dataReader.Close(); } jsonString.Remove(jsonString.Length - 1, 1); jsonString.Append("]"); if (jsonString.Length == 1) { return "[]"; } return jsonString.ToString(); } catch (Exception ex) { throw ex; } } /// <summary> /// DataSet转换为Json /// </summary> /// <param name="dataSet">DataSet对象</param> /// <returns>Json字符串</returns> public static string ToJson(DataSet dataSet) { return ToJson(dataSet, false); //foreach (DataTable table in dataSet.Tables) // { // jsonString +=ToJson(table) + ","; // } // jsonString = jsonString.TrimEnd(','); // return jsonString + "}"; } /// <summary> /// DataSet转换为Json /// </summary> /// <param name="dataSet">DataSet对象</param> /// <returns>Json字符串</returns> public static string ToJson(DataSet dataSet, bool isTableName) { string jsonString = "{"; foreach (DataTable table in dataSet.Tables) { if (isTableName) { jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ","; } else { jsonString += ToJson(table) + ","; } } jsonString = jsonString.TrimEnd(','); return jsonString + "}"; } /// <summary> /// 过滤特殊字符 /// </summary> /// <param name="s"></param> /// <returns></returns> public static string String2Json(String s) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < s.Length; i++) { char c = s.ToCharArray()[i]; switch (c) { case '\"': sb.Append("\\\""); break; case '\\': sb.Append("\\\\"); break; case '/': sb.Append("\\/"); break; case '\b': sb.Append("\\b"); break; case '\f': sb.Append("\\f"); break; case '\n': sb.Append("\\n"); break; case '\r': sb.Append("\\r"); break; case '\t': sb.Append("\\t"); break; case '\v': sb.Append("\\v"); break; case '\0': sb.Append("\\0"); break; default: sb.Append(c); break; } } return sb.ToString(); } /// <summary> /// 格式化字符型、日期型、布尔型 /// </summary> /// <param name="str"></param> /// <param name="type"></param> /// <returns></returns> private static string StringFormat(string str, Type type) { if (type != typeof(string) && string.IsNullOrEmpty(str)) { str = "\"" + str + "\""; } else if (type == typeof(string)) { str = String2Json(str); str = "\"" + str + "\""; } else if (type == typeof(DateTime)) { str = "\"" + str + "\""; } else if (type == typeof(bool)) { str = str.ToLower(); } else if (type == typeof(byte[])) { str = "\"" + str + "\""; } else if (type == typeof(Guid)) { str = "\"" + str + "\""; } return str; } public static void RegistAjax(HtmlHead Header, Type type) { string assemblyName = type.FullName + "," + type.Assembly.FullName.Substring(0, type.Assembly.FullName.IndexOf(",")); if (type.Assembly.FullName.StartsWith("App_Code.")) { assemblyName = type.FullName + ",App_Code"; } Literal l = new Literal(); l.Text = "\n<script type=\"text/javascript\" src=\"/ajaxpro/prototype.ashx\"></script>\n" + "<script type=\"text/javascript\" src=\"/ajaxpro/core.ashx\"></script>\n" + "<script type=\"text/javascript\" src=\"/ajaxpro/converter.ashx\"></script>\n" + "<script type=\"text/javascript\" src=\"/ajaxpro/" + assemblyName + ".ashx\"></script>\n"; Header.Controls.Add(l); } }}
