json序列化与反序列化

using System.Runtime.Serialization.Json;

/// <summary>  
/// 将对象转化为Json字符串   
/// </summary>  
/// <typeparam name="T">源类型</typeparam>  
/// <param name="obj">源类型实例</param>  
/// <returns>Json字符串</returns>  
public static string GetJsonFromObj<T>(T obj)
{
    DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(obj.GetType());
    using (MemoryStream ms = new MemoryStream())
    {
        jsonSerializer.WriteObject(ms, obj);
        return Encoding.UTF8.GetString(ms.ToArray());
    }
}

/// <summary>  
/// 将Json字符串转化为对象  
/// </summary>  
/// <typeparam name="T">目标类型</typeparam>  
/// <param name="strJson">Json字符串</param>  
/// <returns>目标类型的一个实例</returns>  
public static T GetObjFromJson<T>(string strJson)
{
    T obj = Activator.CreateInstance<T>();
    using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(strJson)))
    {
        DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(obj.GetType());
        return (T)jsonSerializer.ReadObject(ms);
    }
}