c#.net 4 json序列化与反序列化通用类

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Runtime.Serialization.Json;
namespace Wyw.Utilities
{
/// <summary>
/// JsonUtil
/// JsonUtil功能:json字符串和实体类转化
/// jsonObject实体类可以用这样的方法生成：JsonCSharpClassGenerator.exe工具；推荐：http://json2csharp.com/
/// 修改记录
///
/// 版本：1.0
/// <author>
///		<name>Wyw308</name>
///		<date>2012-03-26 13:26:09</date>
/// </author>
/// </summary>
public  class JsonUtil
{
/// <summary>
/// 将object转换为json字符串,obj为方法实体类
/// </summary>
/// <param name="obj">方法实体类</param>
/// <returns></returns>
public static string ObjectToJson(object obj)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
using (MemoryStream ms = new MemoryStream())
{
serializer.WriteObject(ms, obj);
StringBuilder sb = new StringBuilder();
sb.Append(Encoding.UTF8.GetString(ms.ToArray()));
return sb.ToString();
}
}
/// <summary>
/// 将json字符串转化为方法实体类
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="jsonString"></param>
/// <returns></returns>
public static T JsonToObject<T>(string jsonString)
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
T jsonObject = (T)ser.ReadObject(ms);
ms.Close();
return jsonObject;
}
/// <summary>
/// 规范的json建对是这样："名称":"值",本方法将json字符串中的名称添加双引号
/// </summary>
/// <param name="jsonString">json字符串</param>
/// <returns></returns>
public static string JsonFormat(string jsonString)
{
//(?<=:)[\w]+(?=,)  以:开头，以,结尾中间的字符
return Regex.Replace(jsonString, "\\b[\\w]+(?=:\"[^\"]*\")", "\"$0\"");//连续字母或数字以:结尾且不包含:
}
/// <summary>
/// 从外围截取边界内内容,StripTextTo(jonstr,"[", "]");
/// </summary>
/// <param name="jsonString"></param>
/// <param name="sChr"></param>
/// <param name="eChr"></param>
/// <returns></returns>
public string StripTextTo(string jsonString,char sChr, char eChr)
{
string stripTextTo = jsonString;
int num = stripTextTo.IndexOf(sChr);
int num2 = stripTextTo.LastIndexOf(eChr);
int num3 = num2 - num + 1;
if (num3 > 1)
{
stripTextTo = stripTextTo.Substring(num, num3);
}
return stripTextTo;
}
}
}