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);
}
}
}