Json转换工具
时间：2011-03-14 来源：钟凯
using System;
using System.Reflection;
using System.Collections;
using System.Data;
using System.Data.Common;
/// <summary>
/// Json转换工具
/// 作者：吴奇凡
/// 用于转换基本的对象
/// </summary>
public class FxJson
{
private FxJson()
{
}
/// <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 ToJsonAll(object jsonObject)
{
string jsonString = "{";
PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();
for (int i = 0; i < propertyInfo.Length; i++)
{
object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);
string value = string.Empty;
if (objectValue is DateTime || objectValue is string || objectValue is Guid || objectValue is TimeSpan)
{
value = "'" + objectValue + "'";
}
else if (objectValue is IEnumerable)
{
value = ToString((IEnumerable)objectValue);
}
else
{
value = objectValue.ToString();
}
jsonString += "\"" + propertyInfo[i].Name + "\":" + value + ",";
}
return FxJson.DeleteLast(jsonString) + "}";
}
/// <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 ToString(IEnumerable array)
{
string jsonString = "[";
foreach (object item in array)
{
jsonString += FxJson.ToJsonAll(item) + ",";
}
return FxJson.DeleteLast(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 = item+",";
}
return FxJson.DeleteLast(jsonString) + "]";
}
/// <summary>
/// 删除结尾字符
/// </summary>
/// <param name="str">需要删除的字符</param>
/// <returns>完成后的字符串</returns>
private static string DeleteLast(string str)
{
if (str.Length > 1)
{
return str.Substring(0, str.Length - 1);
}
return str;
}
/// <summary>
/// Datatable转换为Json
/// </summary>
/// <param name="table">Datatable对象</param>
/// <returns>Json字符串</returns>
public static string ToString(DataTable table)
{
string jsonString = "[";
DataRowCollection drc = table.Rows;
for (int i = 0; i < drc.Count; i++)
{
jsonString += "{";
foreach (DataColumn column in table.Columns)
{
jsonString += "\"" + column.ColumnName + "\":";
if (column.DataType == typeof(DateTime) || column.DataType== typeof( string))
{
jsonString += "\"" + drc[i][column.ColumnName] + "\",";
}
else
{
jsonString += drc[i][column.ColumnName] + ",";
}
}
jsonString = DeleteLast(jsonString) + "},";
}
return DeleteLast(jsonString) + "]";
}
/// <summary>
/// DataReader转换为Json
/// </summary>
/// <param name="dataReader">DataReader对象</param>
/// <returns>Json字符串</returns>
public static string ToString(DbDataReader dataReader)
{
string jsonString = "[";
while (dataReader.Read())
{
jsonString += "{";
for (int i = 0; i < dataReader.FieldCount; i++)
{
jsonString += "\"" + dataReader.GetName(i) + "\":";
if (dataReader.GetFieldType(i) == typeof(DateTime) || dataReader.GetFieldType(i) == typeof(string))
{
jsonString += "\"" + dataReader[i] + "\",";
}
else
{
jsonString += dataReader[i] + ",";
}
}
jsonString = DeleteLast(jsonString) + "}";
}
dataReader.Close();
return DeleteLast(jsonString) + "]";
}
/// <summary>
/// DataSet转换为Json
/// </summary>
/// <param name="dataSet">DataSet对象</param>
/// <returns>Json字符串</returns>
public static string ToString(DataSet dataSet)
{
string jsonString = "{";
foreach (DataTable table in dataSet.Tables)
{
jsonString += "\"" + table.TableName + "\":" + ToString(table) + ",";
}
return jsonString = DeleteLast(jsonString) + "}";
}
}
相关阅读 更多 +
