1、創建自己的jsonserializer類

public class CustomJsonNetSerializer : JsonSerializer, ISerializer
{
public CustomJsonNetSerializer()
{
ContractResolver = new CamelCasePRopertyNamesContractResolver();
DateFormatHandling = DateFormatHandling.IsoDateFormat;
Formatting = Formatting.None;
}

public bool CanSerialize(string contentType)
{
return contentType.Equals("application/json", StringComparison.OrdinalIgnoreCase);
}

public void Serialize<TModel>(string contentType, TModel model, Stream outputStream)
{
using (var streamWriter = new StreamWriter(outputStream))
using (var jsonWriter = new JsonTextWriter(streamWriter))
{
Serialize(jsonWriter, model);
}
}

public IEnumerable<string> Extensions { get { yield return "json"; } }
}

2、重寫DefaultNancyBootstrapper類

public class Bootstrapper : DefaultNancyBootstrapper
{

protected override void ConfigureApplicationContainer(TinyIoCContainer container)
{
base.ConfigureApplicationContainer(container);

container.Register<ISerializer, CustomJsonNetSerializer>();
}
}