公共的Json操作C#類
using System;
using System.Data;
using System.Text;
using System.Collections.Generic;
using System.Reflection;
using System.Data.Common;
using System.Collections;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text.RegularExpressions;
using System.Runtime.Serialization.Json;
namespace System.Common
{
public static class Json
{
///
/// List轉成json
///
/// (IList 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();
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();
}
///
/// 序列化集合對象
///
public static string JsonSerializerByArrayData(T[] tArray)
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T[]));
MemoryStream ms = new MemoryStream();
ser.WriteObject(ms, tArray);
string jsonString = Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
string p = @"\\/Date\((\d+)\+\d+\)\\/";
MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);
Regex reg = new Regex(p);
jsonString = reg.Replace(jsonString, matchEvaluator);
return jsonString;
}
///
/// 序列化單個對象
///
public static string JsonSerializerBySingleData(T t)
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
MemoryStream ms = new MemoryStream();
ser.WriteObject(ms, t);
string jsonString = Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
string p = @"\\/Date\((\d+)\+\d+\)\\/";
MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);
Regex reg = new Regex(p);
jsonString = reg.Replace(jsonString, matchEvaluator);
return jsonString;
}
///
/// 反序列化單個對象
///
public static T JsonDeserializeBySingleData(string jsonString)
{
//將"yyyy-MM-dd HH:mm:ss"格式的字符串轉爲"\/Date(1294499956278+0800)\/"格式
string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";
MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
Regex reg = new Regex(p);
jsonString = reg.Replace(jsonString, matchEvaluator);
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
T obj = (T)ser.ReadObject(ms);
return obj;
}
///
/// 反序列化集合對象
///
public static T[] JsonDeserializeByArrayData(string jsonString)
{
//將"yyyy-MM-dd HH:mm:ss"格式的字符串轉爲"\/Date(1294499956278+0800)\/"格式
string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";
MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
Regex reg = new Regex(p);
jsonString = reg.Replace(jsonString, matchEvaluator);
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T[]));
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
T[] arrayObj = (T[])ser.ReadObject(ms);
return arrayObj;
}
///
/// 將Json序列化的時間由/Date(1294499956278+0800)轉爲字符串
///
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;
}
///
/// 將時間字符串轉爲Json時間
///
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;
}
///
/// List轉成json
///
/// (IList list)
{
object obj = list[0];
return ListToJson(list, obj.GetType().Name);
}
///
/// 對象轉換爲Json字符串
///
/// 對象
/// Json字符串
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;
}
}
///
/// 對象集合轉換Json
///
/// 集合對象
/// Json字符串
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, jsonString.Length);
}
else
{
jsonString = "[]";
}
return jsonString + "]";
}
///
/// 普通集合轉換Json
///
/// 集合對象
/// Json字符串
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 + "]";
}
///
/// Datatable轉換爲Json
///
/// Datatable對象
/// Json字符串
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();
}
///
/// DataTable轉成Json
///
///
///
///
/// DataReader轉換爲Json
///
/// DataReader對象
/// Json字符串
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;
}
}
///
/// DataSet轉換爲Json
///
/// DataSet對象
/// Json字符串
public static string ToJson(DataSet dataSet)
{
string jsonString = "{";
foreach (DataTable table in dataSet.Tables)
{
jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
}
jsonString = jsonString.TrimEnd(',');
return jsonString + "}";
}
///
/// 過濾特殊字符
///
///
///
/// 格式化字符型、日期型、布爾型
///
///
///
///
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