asp.net 解析json数据

//Json所需引用
using System.Runtime.Serialization.Json;
using System.IO;
using System.Text;

/// <summary>
/// JSON序列化和反序列化辅助类
/// </summary>
public class JsonHelper
{
/// <summary>
/// JSON序列化
/// </summary>
public static string JsonSerializer<T>(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();
return jsonString;
}

/// <summary>
/// JSON反序列化
/// </summary>
public static T JsonDeserialize<T>(string jsonString)
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
T obj = (T)ser.ReadObject(ms);
return obj;
}
}

//举例微信的登录的json数据解析
//微信Accesstoken信息
public class WxAccessTokenInfo
{
public string access_token { get; set; }
public string expires_in { get; set; }
public string refresh_token { get; set; }
public string openid { get; set; }
public string scope { get; set; }
public string unionid { get; set; }
}

//微信用户信息
public class WxUserInfo
{
public string openid { get; set; }
public string nickname { get; set; }
public string sex { get; set; }
public string province { get; set; }
public string city { get; set; }
public string country { get; set; }
public string headimgurl { get; set; }
public string privilege { get; set; }
public string unionid { get; set; }
}

public partial class WxLogin_Test : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//微信的json数据
string JsonData = "微信的json数据";
//解析数据
WxAccessTokenInfo wxAccesstoken = JsonHelper.JsonDeserialize<WxAccessTokenInfo>(JsonData);
//解析结束
//调用wxAccesstoken内的成员变量即可
}
}